Siemens SIWAREX FTC Device Manual

SIWAREX® FTC

Device Manual

Module for Belt scale

Status 10.2010

Warning and Safety Terms

This manual contains notices that are for your personal safety and to prevent damage to
devices or surroundings. These notices are indicated by a warning triangle and are presented
as follows depending on the degree of danger:

!

!

!

Danger

means, that death, severe injury or considerable material damage may result, if
the respective safety measures are not taken.

Warning

Means that death, severe injury or serious material damage can result if the corresponding safety
precautions are not followed carefully.

Caution

Means that material damage or minor injuries can result if the corresponding safety precautions are
not followed carefully.

Caution

Means that material damage can result if the corresponding safety precautions
are not followed carefully.

Attention

Refers to important information on the product, handling of a product or a
corresponding segment of the documentation to which special attention should be
given.

Qualified Personnel

Commissioning and operation of a device may only be performed by qualified personnel. Qualified personnel as
indicated in the safety information in this manual are people that have the authorization to install, ground and label
devices, systems and power circuits.

Intended Utilization

Warning

!

Brand names / Trademarks

The device may only be utilized for the applications described in the catalog and the technical
description and only in conjunction with external devices and components that are approved or
recommended by Siemens.
Fault-free and safe operation of the product depend on proper transport, proper storage, assembly,
installation, operation and maintenance.

SIWAREX®, SIMATIC®, SIMATIC HMI® and SIMATIC NET® are trade marks of the
Siemens AG. The other designations in this info may be trade marks the use of which by third
persons for their own purposes might infringe proprietor rights.

Copyright

Circulation or duplication of this document, utilization and
disclosure of its contents are not permitted unless explicitly
approved. Offenders will be liable for damages. All rights
reserved, including rights created by granting of patents or
registration of a utility model or design.

Siemens AG
Automation & Drives Dept.
SIWAREX Weighing Systems
A&D SC PS1 WT
Östliche Rheinbrückenstr. 50
D-76187 Karlsruhe

©

Siemens AG 2006 All rights reserved

Disclaimer

We have tested the contents of this document for compatibility
with the hardware and software described. This does not
exclude the possibility of discrepancies, in which case we do
not guarantee the complete compatibility of this document.
The information in this document is assessed regularly and
any necessary corrections are included in the next revision.
We are grateful for any suggestions for improvement.

© Siemens AG 2007
Subject to change without notice.

iv SIWAREX FTC

SIWAREX FTC

SIWAREX FTC

Module for belt scale

Device Manual

Warning and Safety Terms

Contents

Preface

Scope of Delivery

Product Overview

Hardware Configuration and
Assembly

Weighing Functions and Parameters

Commands

Messages and Diagnosis

Programming in SIMATIC STEP 7

Commissioning with a PC –
SIWATOOL FTC_B

Firmware-Update with SIWATOOL
FTC_B

Empty

1
2
3

4

5
6
7
8

9

10

11

Revision 10/2010

Project planning in SIMATIC PCS 7

Accessories

Technical Data

Index

Abbreviations

12
13

14

15

16

SIWAREX FTC v

Contents

1 Preface....................................................................................................................................

1.1 ...............................................................................................1-1 PURPOSE OF MANUAL

1.2 ..................................................................................1-1 BASIC KNOWLEDGE REQUIRED

1.3 ...................................................................................................1-1 SCOPE OF MANUAL

1.4 ..................................................................................................1-3 FURTHER SUPPORT

2 Scope of Delivery .................................................................................................................. 2-4

2.1 .................................................................................................2-4 SCOPE OF DELIVERY

3 Product Overview..................................................................................................................3-5

3.1 ..................................................................................................................3-5 GENERAL

3.2 .....................................................................................3-5 ADVANTAGES AND BENEFITS

3.3 .................................................................................................3-6 APPLICATION RANGE

3.4 ..............................................................................................................3-6 STRUCTURE

3.5 .................................................................................................................3-6 FUNCTION

3.6 ............................................................................3-7 SYSTEM INTEGRATION IN SIMATIC

..........................................3-8 COMMISSIONING AND SERVICE WITH SIWATOOL FTC_B

3.7

.....................................................3-9 FIRMWARE DOWNLOAD WITH SIWATOOL FTC_B

3.8

............................3-9 READING THE STORED WEIGHING LOGS WITH SIWATOOL FTC_B

3.9

4 Hardware Configuration and Assembly........................................................................... 4-10

4.1 .............................................................4-11 CONFIGURING THE HARDWARE IN SIMATIC

...........................................................................4-11 STRUCTURE TO EMC GUIDELINES

4.2

4.2.1 .....................................................................................................4-11 Definition: EMC

...........................................................................................................4-11 Introduction

4.2.2

............................................................................4-12 Possible Effects of Interference

4.2.3

..........................................................................................4-12 Coupling Mechanisms

4.2.4

..............................................................4-12 Five Basic Rules for Guaranteeing EMC

4.2.5

.............................................................................4-13 ASSEMBLY ON THE PROFILE RAIL

4.3

4.4 .......................................................................................4-14 CONNECTION AND WIRING

4.4.1 ..................................................................4-14 Connection Areas for SIWAREX FTC

............................................................................................4-15 Shielding Connection

4.4.2

........................................................................4-16 Connection of 24 V Power Supply

4.4.3

.............................................................................4-16 Connections to Front Terminal

4.4.4

...........................................................................................4-16 Load Cell Connection

4.4.5

.........................................................................................................4-18 Digital Inputs

4.4.6

........................................................................................................4-20 Counter Input

4.4.7

......................................................................................................4-20 Digital Outputs

4.4.8

........................................................................................................4-22 Analog output

4.4.9

........................................4-22 Interface RS 485 for Mettler Toledo type WM or WMH

4.4.10

...................................................................................................4-24 RS 485 Interface

4.4.11

......................................................4-24 Connecting the Remote Display from Siebert

4.4.12

..............................................................4-25 Connecting the PC for SIWATOOL FTC

4.4.13

..........................................................................................4-26 LED Display Elements

4.4.14

..............................................................................4-26 Using the Micro Memory Card

4.4.15

...................................................................................4-27 PREPARING FOR OPERATION

4.5

4.6 ......................................................................................4-28 APPLICATION IN EX-ZONES

5 Weighing Functions and Parameters................................................................................5-30

5.1 ................................................................................................................5-30 GENERAL

5.2 .............................................................................5-32 DR3 ADJUSTMENT PARAMETERS

5.2.1

5.2.2

5.2.3

5.2.4

5.2.5

5.2.6

DR3 - Adjustment Digits 0, 1, 2, 3, 4, for the Zero Point and Adjustment
Weights 1, 2, 3, 4

..................................................................................................5-35

........................................................................5-39 DR3 - Characteristic Value Range

..........................................................5-39 DR3 – Filter Sequence for the Signal Filter

............................................................................5-39 DR3 - Type of Low-Pass Filters

..........................................................................................5-40 DR3 - Limit Frequency

..................................................................5-40 DR3 - Depth of Average Value Filters

1-1

vi SIWAREX FTC

SIWAREX FTC

5.2.7 ................................................................................................5-40 DR3 - Scale Name

.........................................................................5-40 DR3 - Number of Weight Ranges

5.2.8

.................................................................................................5-40 DR3 - Scale Type

5.2.9

..................................................5-40 DR3 - Activate Zero Setting upon Switching On

5.2.10

.............................5-41 DR3 - Activated Zero Setting upon Switch On, If Scale Tared

5.2.11

........................................................................5-41 DR3 - Automatic Zero Adjustment

5.2.12

.....................................................5-41 DR3 - Minimum Weight for Weighing Range 1

5.2.13

....................................................5-41 DR3 - Maximum Weight for Weighing Range 1

5.2.14

.....................................................5-42 DR3 - Minimum Weight for Weighing Range 1

5.2.15

....................................................5-42 DR 3 - Minimum Weight for Weighing Range 2

5.2.16

...................................................5-42 DR 3 - Maximum Weight for Weighing Range 2

5.2.17

....................................................5-42 DR 3 - Minimum Weight for Weighing Range 2

5.2.18

....................................................5-42 DR 3 - Minimum Weight for Weighing Range 3

5.2.19

...................................................5-42 DR 3 - Maximum Weight for Weighing Range 3

5.2.20

........................................................5-43 DR 3 - Numeral Step for Weighing Range 3

5.2.21

...........................................................................................5-43 DR 3 - Standstill Time

5.2.22

........................................................................................5-43 DR 3 - Standstill Range

5.2.23

.........................................................................5-43 DR 3 - Waiting Time for Standstill

5.2.24

...................5-44 DR 3 - Maximum Negative Weight for Zero Setting upon Switch On

5.2.25

....................5-44 DR 3 - Maximum Positive Weight for Zero Setting upon Switch On

5.2.26

.............................................5-44 DR 3 - Maximum Negative Weight for Zero Setting

5.2.27

...............................................5-44 DR 3 - Maximum Positive Weight for Zero Setting

5.2.28

..................................................................................5-44 DR 3 - Tare max. Weight T-

5.2.29

........................................................................................5-44 DR 3 – Operating Mode

5.2.30

.................................5-45 DR 3 - Weighing Operating Mode: NAWI Filling Procedure

5.2.31

...........................................5-45 DR 3 - Operating Mode: NAWI Emptying Procedure

5.2.32

......................................................5-45 DR 3 - Operating Mode: Force Measurement

5.2.33

......................................................................5-45 DR 3 - Operating Mode: Belt Scale

5.2.34

.....................................................5-45 DR 3 - Operating Mode: Loss-in-weight Scale

5.2.35

....................................5-45 DR 3 - Operating Mode: Bulk Flow Measurement Device

5.2.36

............................................................................................5-46 DR 3 - Load cell type

5.2.37

...................................................5-46 DR 3 – Monitoring time for the digital load cells

5.2.38

...............................................................................................5-47 DR 3 - Regulations

5.2.39

................................................................................................5-47 DR 3 - Weight Unit

5.2.40

.....................................................................................5-47 DR 3 – Large Weight Unit

5.2.41

......................................................................5-47 DR 3 - Length Unit (belt scale only)

5.2.42

.....................................................................................5-47 DR 3 - Conversion Factor

5.2.43

........................................................5-47 DR 3 – Determination Time (belt scale only)

5.2.44

..........5-48 THEORETICAL ADJUSTMENT – ADJUSTMENT WITHOUT ADJUSTMENT WEIGHTS

5.3

5.4 .........................................................................................5-48 DR 4 BASIS PARAMETER

5.4.1 .....................................................................5-49 DR 4 - Monitoring Time for Logging

.........................................................................5-49 DR 4 - Device for the Log Output

5.4.2

..................................................................5-49 DR 4 - Basis Weight for Limit Value 1

5.4.3

..................................................................5-49 DR 4 - Basis Weight for Limit Value 2

5.4.4

.........................................5-50 DR 4 - Basis Weight for Monitoring the Empty Range

5.4.5

.............................................................................................5-50 DR 4 - Empty Range

5.4.6

................................................................5-50 DR 4 - Switch-on Weight Limit Value 1

5.4.7

.....................................................................5-50 DR 4 - Cut-off Weight Limit Value 1

5.4.8

................................................................5-50 DR 4 - Switch-on Weight Limit Value 2

5.4.9

.....................................................................5-51 DR 4 - Cut-off Weight Limit Value 2

5.4.10

................................................................5-51 DR 4 - Switch-on Weight Limit Value 3

5.4.11

.....................................................................5-51 DR 4 - Cut-off Weight Limit Value 3

5.4.12

...............................................................................5-51 DR 5 BELT SCALE PARAMETER

5.5

5.5.1 ..........................................................................................5-52 DR 5 – Nominal speed

...................................................................5-52 DR 5 – Time basis for the belt speed

5.5.2

SIWAREX FTC vii

5.5.3 ..........................................................................................5-53 DR 5 – Pulse constant

..................................................................................5-53 DR 5 – Constant belt speed

5.5.4

.................................................................................5-53 DR 5 – Minimum belt speed

5.5.5

...............................................................................5-53 DR 5 – Maximum belt speed

5.5.6

..................................................5-53 DR 5 – Reaction time for belt monitoring at start

5.5.7

..........................................5-53 DR 5 – Reaction time for belt monitoring in operation

5.5.8

......................................................................................5-53 DR 5 – Nominal flow-rate

5.5.9

..................................................................................5-53 DR 5 – Effective belt length

5.5.10

..............................................................5-53 DR 5 – Correction factor for belt loading

5.5.11

....................................................................................5-54 DR 5 – Minimum flow-rate

5.5.12

...................................................................................5-54 DR 5 – Maximum flow-rate

5.5.13

................................................................................5-54 DR 5 – Minimum belt loading

5.5.14

...............................................................................5-54 DR 5 – Maximum belt loading

5.5.15

......................................................5-54 DR 5 – Maximum belt loading for zero setting

5.5.16

............................................................5-54 DR 5 - Minimum belt loading for totalizing

5.5.17

...............5-54 DR 5 – Delay time for the monitoring of the belt loading after the start

5.5.18

.........5-54 DR 5 – Delay time for monitoring the belt loading in continuous operation

5.5.19

.....................................................................5-55 DR 5 – Numeral step for totals 1...4

5.5.20

...............................................................5-55 DR 5 – Numeral step for the totals 4...5

5.5.21

....................................................................5-55 DR 5 – Material quantity per pulse 1

5.5.22

.......................................................5-55 DR 5 – Pulse duration 1 for the digital output

5.5.23

......................................5-55 DR 5 – Minimum pause duration 1 for the digital output

5.5.24

....................................................................5-55 DR 5 – Material quantity per pulse 2

5.5.25

.......................................................5-55 DR 5 – Pulse duration 2 for the digital output

5.5.26

......................................5-55 DR 5 – Minimum pause duration 2 for the digital output

5.5.27

.........................................................5-56 DR 5 – Over and under-load inhibition time

5.5.28

...................................................................................................5-56 DR 7 INTERFACES

5.6

5.6.1 ..............................................................5-61 DR 7 - Source for the Weight Simulation

...........5-61 DR 7 - Decade for Rounding the Decimal Places for the Process Values

5.6.2

........................................................................5-61 DR 7 - Force in Service Operation

5.6.3

.............................5-62 DR 7 - Process Value 1 for Fast Output to the SIMATIC CPU

5.6.4

.............................5-62 DR 7 - Process Value 2 for Fast Output to the SIMATIC CPU

5.6.5

................................5-62 DR 7 - Definition of the Process Alarms 0, 1, 2, 3, 4, 5, 6, 7

5.6.6

.................................................................5-63 DR 7 - S7-FB-Life Bit Monitoring Time

5.6.7

.....................................5-63 DR 7 – Input Value for the Adjustment Zero (0 or 4 mA)

5.6.8

.....................................................5-63 DR 7 - Input Value for the End Value (20 mA)

5.6.9

..................................5-63 DR 7 - Replacement Value for the Analog Output with OD

5.6.10

....................................................................5-63 DR 7 - Source for the Analog Output

5.6.11

.......................................................5-63 DR 7 - Current Range for the Analog Output

5.6.12

............................................................................5-64 DR 7 - RS232 Printer Baudrate

5.6.13

...................................................5-64 DR 7 - RS232 Transmission Control for Printer

5.6.14

..................................................................5-64 DR 7 – Protocol Selection for RS 485

5.6.15

......................................................5-64 DR 7 - Decimal Place for the Remote Display

5.6.16

......................................................................................5-64 DR 7 – RS 485 Baudrate

5.6.17

...........................................................................5-65 DR 7 - RS485 Character Frame

5.6.18

.................................5-65 DR 7 - Definition of the Digital Outputs 1, 2, 3, 4, 5, 6, 7, 8

5.6.19

..................................................5-65 DR 7 - Level Definition for Digital Outputs 1 to 8

5.6.20

..............5-66 DR 7 - Replacement Values for DO 1 to 8 with Fault or Output Disable

5.6.21

..................5-66 DR 7 - Replacement Values for Digital Outputs with Operating Error

5.6.22

..........................................5-67 DR 7 - Definition of Digital Inputs 0, 1, 2, 3, 4, 5, 6, 7

5.6.23

.....................................................5-67 DR 7 - Level Definition for Digital Inputs 1 to 7

5.6.24

5.6.25

5.6.26

5.6.27

DR 7 - MMC Log Overflow, MMC Trace Overflow, Target Memory for Trace
Function

................................................................................................................5-67

........................................................5-68 DR 7 - Memory Segment for Trace Function

..........................................................................5-68 DR 7 - Memory Segment for Log

viii SIWAREX FTC

SIWAREX FTC

5.6.28 ...............................................................5-68 DR 7 - Trace Function Recording Cycle

...................................................................................................5-68 DR 8 DATE / TIME

5.7

5.8 ...........................................................................................5-69 DR 9 INFO ON MODULE

5.8.1 ...........................................................................................5-70 DR 9 - Info on Module

..................................................................................................5-70 DR 14 TILT ANGLE

5.9

5.9.1 ...............................................................5-70 DR 14 – Tilt angle definition for the belt

................................................................................................5-70 DR 15 TARE ENTRY

5.10

5.10.1 ................................................................................................5-71 DR 15 - Tare Entry

..........................................................................5-71 DR 16 WEIGHT SIMULATION ENTRY

5.11

5.11.1 ...................................................................5-71 DR 16 - Weight Simulation Definition

..........................................................................5-71 DR 17 ANALOG OUTPUT CONTROL

5.12

5.12.1 .............................................................5-72 DR 17 - Ext. Definition for Analog Output

.................5-72 DR 18 CONTROL DISPLAY FOR NON-AUTOMATIC WEIGHING INSTRUMENT

5.13

5.14 .............................................................5-72 DR 21 PARAMETER FOR BATCH OPERATION

5.14.1 .....................................................................................5-73 DR 21 – Loading quantity

............................................................................5-73 DR 21 – Maximum loading time

5.14.2

........................................................................................5-73 DR 21 – Trailing weight

5.14.3

..........................................................................................5-73 DR 21 – Log Selection

5.14.4

.................5-73 DR 30 PROCESS STATUS 1 (NAWI, FORCE MEASUREMENT, BELT SCALE)

5.15

.....................................................................................5-74 DR 30 - NAWI Status Bits

5.15.1

...................................................................................5-75 DR 30 - Conti-Status Flags

5.15.2

...............................................................................5-76 DR 30 - Gross Process Value

5.15.3

...................................................................................5-76 DR 30 - Net Process Value

5.15.4

.................................................................................5-76 DR 30 - Tare Process Value

5.15.5

..............................................................................................5-76 DR 30 - G/N Weight

5.15.6

......................................................................................5-76 DR 30 - G/N Weight_x10

5.15.7

.........................................................................................................5-76 DR 30 - Tare

5.15.8

..............................................................................................5-76 DR 30 – Belt Speed

5.15.9

5.15.10

5.15.11

5.15.12

5.15.13

5.15.14

5.15.15

5.15.16

5.15.17

5.15.18

5.15.19

5.16

5.16.1

5.16.2

5.16.3

5.16.4

5.16.5

5.16.6

5.16.7

5.16.8

5.17

5.17.1 .............................................................................5-79 DR 33 – Distribution Memory 1

5.17.2

5.17.3

5.17.4

5.17.5

5.17.6

5.17.7

..................................................5-76 DR 30 – Belt Speed in % of the Nominal Speed

..................................................5-76 DR 30 – Belt Loading in % of the Nominal Load

..........................................................................................5-77 DR 30 - Nominal Load

.................................................................................................5-77 DR 30 - Belt Load

...............................................................................................5-77 DR 30 – Flowrate 1

...............................................................................................5-77 DR 30 – Flowrate 2

...............................................................................................5-77 DR 30 – Flowrate 3

...................................................5-77 DR 30 – Flowrate in % of the Nominal Flowrate

.......................................................................5-77 DR 30 – Operating Hours Counter

...............................................................................5-77 DR 30 – Pulse Counter Value

...............................................5-77 DR 31 PROCESS STATUS 2 (ALL OPERATING MODES)

...........................................................................5-78 DR 31 – Unfiltered Digital Value

...........................................................................5-78 DR 31 – Unfiltered Digital Value

.......................................................................................5-78 DR 31 – Operating Error

...............................................................................................5-78 DR 31 – Date Time

..................................................................................5-78 DR 31 – Max. Temperature

............................................................................5-78 DR 31 – Status of Digital Inputs

...................................................................5-78 DR 31 - Impedance Reference Value

........................................................................5-78 DR 31 – Impedance Actual Value

................................................................................5-78 DR 33 DISTRIBUTION MEMORY

.............................................................................5-79 DR 33 – Distribution Memory 2

.............................................................................5-79 DR 33 – Distribution Memory 3

.............................................................................5-79 DR 33 – Distribution Memory 4

.............................................................................5-79 DR 33 – Distribution Memory 5

.............................................................................5-79 DR 33 – Distribution Memory 6

.............................................................................5-80 DR 33 – Distribution Memory 7

SIWAREX FTC ix

5.17.8 .............................................................................5-80 DR 33 – Distribution Memory 8

.................................................................................5-80 DR 34 ASCII DISPLAY VALUE

5.18

5.19 ........................................5-80 DR 35 ENCODED INFORMATION FOR VERIFIABLE DISPLAY

5.20 ................................................................................5-80 DR 40 TO 43 LOG TEXT 1 TO 4

....................................................................................................5-83 DR 44 LAST LOG

5.21

5.21.1 ...................................................................................................5-83 DR 44 - MMC-ID

......................................................................................................5-83 DR 44 - Log ID

5.21.2

..........................................................................................5-83 DR 44 - Last Log Data

5.21.3

........................................................................................................5-83 DR 45 STRING

5.22

5.23 .....................................5-84 DR 46 PARAMETER FOR READING MMC LOGS IN SIMATIC

.........................................................................................5-85 DR 47 REQUESTED LOG

5.24

5.24.1 ...................................................................................................5-85 DR 47 - MMC-ID

......................................................................................................5-85 DR 47 - Log ID

5.24.2

..................................................................................................5-85 DR 47 - Log Data

5.24.3

......................................................................5-85 DR 120/121 TRACE - DATA LOGGING

5.25

5.26 ................................................................................5-86 DR 123 DATA CONTENT MMC

........................................................................................5-87 DR 122 LOG DATA MMC

5.27

6 Commands ...........................................................................................................................6-88

6.1 ................................................................................................6-88 COMMAND GROUPS

6.2 .......................................................................................................6-89 COMMAND LIST

7 Messages and Diagnosis....................................................................................................7-98

7.1 ....................................................................................................7-98 MESSAGE TYPES

7.2 ....................................................................................................7-98 MESSAGE PATHS

7.3 ............................................7-99 DETECTION OF MESSAGES USING SIWATOOL FTC_B

...................................................7-99 DETECTION OF MESSAGES USING FB SIWA_FTC

7.4

.7-99 DETECTION OF MESSAGES USING THE DIAGNOSTIC ALARMS IN THE SIMATIC-CPU.

7.5

......................................................7-100 MESSAGE LIST DATA AND OPERATING ERRORS

7.6

7.7 ...............................................................7-107 MESSAGE LIST TECHNOLOGY MESSAGES

7.8 ......................................................7-110 MESSAGE LIST OF THE OPERATING MESSAGES

8 Programming in SIMATIC STEP 7 ...................................................................................8-112

8.1 ..............................................................................................................8-112 GENERAL

8.2 ...........................................................................8-112 SIWAREX FTC IN HW CONFIG.

.............................................8-113 SIWAREX FTC IN THE CYCLIC STEP 7 – PROGRAM

8.3

8.4 ................................................................8-113 CALL PARAMETERS FOR FB SIWA_FTC

......................................................................................8-113 ADDR:= 256, Input, INT

8.4.1

...............................................................................8-114 DB_SCALE:= 18, Input, INT

8.4.2

............................................................................8-114 DB_VECTOR:= 17, Input, INT

8.4.3

..........................................8-114 CMD_IN:= "DB_SCALE".i_CMD_INPUT, Input, INT

8.4.4

.....................................8-114 SIM_VAL:= "DB_SCALE".r_SIM_VALUE, Input, REAL

8.4.5

.................8-114 ANA_OUT:= "DB_SCALE".r_ANALOG_OUT_VALUE, Input, REAL

8.4.6

..............8-114 DO_FORCE:= "DB_SCALE".b_DIG_OUTPUT_FORCE, Input, BYTE

8.4.7

...........8-114 CMD_INPR:= "DB_SCALE".bo_CMD_IN_PROGRESS, Output, BOOL

8.4.8

..............................8-114 CMD_INPR:= "DB_SCALE".bo_CMD_FOK, Output, BOOL

8.4.9

...............................8-115 CMD_ERR:= "DB_SCALE".bo_CMD_ERR, Output, BOOL

8.4.10

................8-115 CMD_ERR_C:= "DB_SCALE".b_CMD_ERR_CODE, Output, BYTE

8.4.11

....8-115 REF_COUNT:= "DB_SCALE".b_INFO_REFRESH_COUNT, Output, BYTE

8.4.12

...............8-115 PROC_VAL1:= "DB_SCALE".r_PROCESS_VALUE1, Output, REAL

8.4.13

.........8-115 PROC_VAL2:= "DB_SCALE".w_PROCESS_VALUE2, Output, DWORD

8.4.14

............8-115 SC_STATUS:= "DB_SCALE".dw_SCALE_STATUS, Output, DWORD

8.4.15

...............................8-115 ERR_MSG:= "DB_SCALE".bo_ERR_MSG, Output, BOOL

8.4.16

..........8-115 ERR_MSG_TYPE:= "DB_SCALE".b_ERR_MSG_TYPE, Output, BYTE

8.4.17

................8-116 ERR_MSG_C:= "DB_SCALE".b_ERR_MSG_CODE, Output, BYTE

8.4.18

......................................8-116 FB_ERR:= "DB_SCALE".bo_FB_ERR, Output, BOOL

8.4.19

................................................8-116 FB_ERR_C:= "DB_SCALE".b_FB_ERR_CODE

8.4.20

.........................8-117 START_UP:= "DB_SCALE".bo_START_UP_IN_PROGRESS

8.4.21

x SIWAREX FTC

SIWAREX FTC

8.4.22 ....................................................8-117 CMD_EN:= "DB_SCALE".bo_CMD_ENABLE

........................................8-117 ERR_MSG_Q:= "DB_SCALE".bo_ERR_MSG_QUIT

8.4.23

.............................................................................8-117 ALLOCATION OF THE SCALE DB

8.5

9 Commissioning with a PC – SIWATOOL FTC_B............................................................9-118

9.1 ..............................................................................................................9-118 GENERAL

9.2 ................................................9-118 WINDOWS AND FUNCTIONS IN SIWATOOL FTC_B

......................................................................................9-118 OFFLINE CONFIGURATION

9.3

9.4 ..............................................................................................9-118 ONLINE OPERATION

9.5 ....................................................................................................................9-119 HELP

10 Firmware-Update with SIWATOOL FTC_B..................................................................10-120

10.1 ............................................................10-120 ADVANTAGES OF THE FIRMWARE UPDATE

11 Empty.............................................................................................................................. 11-122

12 Project planning in SIMATIC PCS 7............................................................................. 12-123

13 Accessories ...................................................................................................................13-124

14 Technical Data ............................................................................................................... 14-126

14.1 ..........................................................................................14-126 24 V POWER SUPPLY

14.2 .........................................................14-126 POWER SUPPLY FROM S7 BACKPLANE BUS

14.3 ....................................................................................14-126 LOAD CELL CONNECTION

14.4 ................................................................................................14-127 ANALOG OUTPUT

14.5 ......................................................14-127 DIGITAL INPUTS (DI), DIGITAL OUTPUTS (DO)

.................................................................14-128 COUNTER INPUT CI (FOR BELT SCALE)

14.6

..........................................................................................14-128 RS 232C INTERFACE

14.7

14.8 .............................................................................................14-128 RS 485 INTERFACE

14.9 .....................................................................................14-129 DIMENSION AND WEIGHT

14.10 ..............................................................14-129 MECHANICAL REQUIREMENTS AND DATA

14.11 .............................................14-130 ELECTRICAL-, EMC- AND CLIMATIC REQUIREMENTS

14.11.1 ................................................14-130 Electrical Protection and Safety Requirements

14.11.2

14.12

14.13 ...........................................................................................................14-133 LICENSES

15 Index ............................................................................................................................... 15-134

16 Abbreviations ................................................................................................................16-137

..........................................................................14-130 Electromagnetic Compatibility

.............................................................................14-132 ENVIRONMENTAL CONDITIONS

Images

FIGURE 3-1
FIGURE 3-2
FIGURE 4-1
FIGURE 4-2
FIGURE 4-3
FIGURE 4-4
FIGURE 4-5
FIGURE 4-6
FIGURE 4-7
FIGURE 4-8
FIGURE 4-9
FIGURE 4-10
FIGURE 4-11
FIGURE 4-12
FIGURE 5-1
FIGURE 5-2
FIGURE 5-3
FIGURE 5-4
FIGURE 5-5

............. 3-8 CONFIGURATION OF SIMATIC S7/PCS7 WITH SIWAREX FTC

................................................................. 3-9 SIWATOOL FTC_B OVERVIEW

................................................................. 4-14 SIWAREX FTC FRONT VIEW

................................................................... 4-15 SHIELD CLAMP ASSEMBLY

.................................. 4-18 LOAD CELL CONNECTION IN 4-WIRE SYSTEM

.................................. 4-18 LOAD CELL CONNECTION IN 6-WIRE SYSTEM

..................................................................................... 4-19 DIGITAL INPUTS

.................................................................................... 4-20 COUNTER INPUT

................................................................................. 4-21 DIGITAL OUTPUTS

.................................................................................... 4-22 ANALOG OUTPUT

... 4-23 CONNECTING METTLER TOLEDO TYPE WM OR WMH TO RS 485

............................................................................. 4-24 RS 485 CONNECTION

........................................................ 4-25 CONNECTING THE S102 DISPLAY

............................................................................ 4-25 CONNECTING THE PC

....................................... 5-37 ADJUSTMENT DIGITS AND WEIGHT VALUE

.............. 5-38 LINEARIZATION OF THE SCALE CHARACTERISTIC CURVE

....................................................... 5-38 ADJUSTMENT DIGITS AND FORCE

................... 5-39 STEP RESPONSES OF THE DIGITAL LOW-PASS FILTER

.................................................................... 5-43 STANDSTILL MONITORING

SIWAREX FTC xi

FIGURE 5-6 ................................................... 5-50 DEFINING LIMIT VALUE PARAMETER

FIGURE 5-7
FIGURE 8-1
FIGURE 9-1
FIGURE 10-1

Tables

........................... 5-52 DEFINING BELT SCALE PARAMETER PARAMETER

............................................ 8-113 CALL PARAMETERS FOR FB SIWA_FTC

.............................................................. 9-119 SIWATOOL FTC_B WINDOWS

........... 10-121 DOWNLOADING THE FIRMWARE WITH SIWATOOL FTC_B

TABLE 1-1
TABLE 1-2
TABLE 4-1
TABLE 4-2
TABLE 4-3
TABLE 4-4
TABLE 4-5
TABLE 4-6
TABLE 4-7
TABLE 4-8
TABLE 4-9
TABLE 4-10
TABLE 4-11
TABLE 5-1
TABLE 5-2
TABLE 5-3
TABLE 5-4
TABLE 5-5
TABLE 5-6
TABLE 5-7
TABLE 5-8
TABLE 5-9
TABLE 5-10
TABLE 5-11
TABLE 5-12
TABLE 5-13
TABLE 5-14
TABLE 5-15
TABLE 5-16
TABLE 5-17
TABLE 5-18
TABLE 5-19
TABLE 5-20
TABLE 5-21
TABLE 5-22
TABLE 5-23
TABLE 5-24
TABLE 5-25
TABLE 5-26

TABLE 5-27 ..................................................................... 5-87 OVERVIEW OF MMC DATA

TABLE 5-28
TABLE 6-1
TABLE 6-2
TABLE 7-1
TABLE 7-2
TABLE 7-3

..................................................................... 1-1 VALIDITY OF THIS MANUAL

......................................................................... 1-2 OVERVIEW OF CHAPTER

............................. 4-11 REQUIREMENTS FOR N SIWAREX FTC MODULES

............................................................. 4-16 POWER SUPPLY CONNECTION

................................................................... 4-17 LOAD CELL CONNECTIONS

............................................................. 4-19 DIGITAL INPUT CONNECTIONS

.......................................................... 4-20 PULSE ENCODER CONNECTION

......................................................... 4-21 DIGITAL OUTPUT CONNECTIONS

.......................................................... 4-22 ANALOG OUTPUT CONNECTION

........................................................................... 4-23 RS 485 CONNECTIONS

............................................................................. 4-24 RS 485 CONNECTION

............................................................................ 4-25 CONNECTING THE PC

..................................................................... 4-26 DISPLAY ELEMENTS (LED)

.................................................................... 5-31 DATA RECORD OVERVIEW

.................................................................................... 5-35 DR3 ALLOCATION

............................................................................. 5-49 ALLOCATION OF DR 4

............................................................................. 5-61 ALLOCATION OF DR 7

............................................................................. 5-69 ALLOCATION OF DR 8

............................................................................. 5-70 ALLOCATION OF DR 9

........................................................................... 5-70 ALLOCATION OF DR 14

........................................................................... 5-71 ALLOCATION OF DR 15

........................................................................... 5-71 ALLOCATION OF DR 16

........................................................................... 5-72 ALLOCATION OF DR 17

........................................................................... 5-72 ALLOCATION OF DR 18

........................................................................... 5-73 ALLOCATION OF DR 21

........................................................................... 5-74 ALLOCATION OF DR 30

.................................................................... 5-75 DR 30 - NAWI STATUS BITS

.............................................................. 5-76 DR 30 - CONTI-STATUS FLAGS

........................................................................... 5-78 ALLOCATION OF DR 32

........................................................................... 5-79 ALLOCATION OF DR 33

........................................................................... 5-80 ALLOCATION OF DR 34

........................................................................... 5-80 ALLOCATION OF DR 35

........................................................................... 5-81 ALLOCATION OF DR 40

........................... 5-83 PROCESS VALUES FOR ALLOCATING LOG FIELDS

........................................................................... 5-83 ALLOCATION OF DR 44

........................................................................... 5-84 ALLOCATION OF DR 45

........................................................................... 5-84 ALLOCATION OF DR 46

........................................................................... 5-85 ALLOCATION OF DR 47

........................................ 5-86 COMBINATION OF RECORDING ELEMENTS

.................................................................................................. 5-87 MMC LOG

............................................................. 6-96 SIWAREX FTC COMMAND LIST

..................................................... 6-97 SIWAREX FTC COMMAND GROUPS

......................................... 7-106 LIST OF DATA AND OPERATING ERRORS

................................................... 7-109 LIST OF TECHNOLOGY MESSAGES

........................................ 7-110 LIST OF OPERATING MESSAGES –GOING

xii SIWAREX FTC

SIWAREX FTC

TABLE 7-4 ..................................... 7-111 LIST OF OPERATING MESSAGES – COMING

TABLE 14-1
TABLE 14-2
TABLE 14-3
TABLE 14-4
TABLE 14-5
TABLE 14-6
TABLE 14-7
TABLE 14-8
TABLE 14-9
TABLE 14-10
TABLE 14-11

TABLE 14-12
TABLE 14-13

.............................................................. 14-126 DATA: POWER SUPPLY 24 V

...................... 14-126 DATA: POWER SUPPLY FROM S7 BACKPLANE BUS

...................................................... 14-127 DATA: LOAD CELL CONNECTION

.................................................................... 14-127 DATA: ANALOG OUTPUT

.................................... 14-128 DATA: DIGITAL INPUTS, DIGITAL OUTPUTS

................................................................. 14-128 DATA: COUNTER INPUT CI

............................................................... 14-128 DATA: RS 232C INTERFACE

.................................................................. 14-128 DATA: RS 485 INTERFACE

.................................................... 14-129 DATA: DIMENSIONS AND WEIGHT

............................................. 14-129 DATA: MECHANICAL REQUIREMENTS

DATA: ELECTRICAL PROTECTION AND SAFETY
REQUIREMENTS

.................................................................................. 14-130

.................................. 14-131 DATA: ELECTROMAGNETIC COMPATIBILITY

.................................................... 14-132 DATA: CLIMATIC REQUIREMENTS

SIWAREX FTC xiii

1 Preface

1.1 Purpose of Manual

This manual contains all information required to set up and operate the
SIWAREX FTC.

1.2 Basic Knowledge Required

To understand this manual, a general knowledge of SIMATIC automation
technology is required. Weighing technology is also beneficial.

1.3 Scope of Manual

Preface

This manual applies to the SIWAREX FTC module:

Type Name Order number From product

SIWAREX FTC SIWAREX

Flexible
Technology

Continuous

Weighing

Table 1-1 Validity of this manual

Note

This manual contains the description of all modules that are valid at the time of
publication.

We reserve the right to supply new modules or newer versions of modules with
product information containing current information about the module.

revision (Version)

7MH4900-3AA01 HW

V1.0.0

FW

V.2.1.4

SIWAREX FTC 1-1

PREFACE

The layout of this manual is based on activities that must be performed as part of
configuration, commissioning, operation and service / maintenance.

Chapter

1 Preface
2 Scope of Delivery

3 Preface

4 Hardware

5 Weighing Functions

6 Commands

7 Messages and

8 Programming in

9 Commissioning with a

10 Firmware-Update with

Description of Content

Notes on using this manual
Description of the scope of delivery for

SIWAREX FTC.
Overview of

-Structure

- Functionality

- System integration
of SIWAREX FTC.
Description

Configuration and
Assem

bly

and Parameters

Diagnosis

SIMATIC STEP 7

PC – SIWATOOL
FTC_B

- of individual hardware components

- of structure and installation

- of connections

- of preparations for operation.
Description of all weighing parameters and
corresponding functions. The operating mode­specific parameters are indicated accordingly.
Description of commands that can be executed
by SIWAREX FTC.
Description of error messages with notes on
problem solutions

Description of data exchange with the
SIMATIC CPU. This chapter is only meant for
users who wish to write their own application
software.
Description

- Software installation

- Software functions
Description of software functions

SIWATOOL FTC_B
11 Empty
12 Project planning in

Empty
Description of planning for SIMATIC PCS 7

SIMATIC PCS 7
13 Accessories

14 Technical Data
15 Index
16 Abbreviations

Ordering information for optional components
such as:

- Digital remote displays

- Micro Memory Card

- Exi-Interface

Technical Data

Table 1-2 Overview of Chapter

1-2 SIWAREX FTC

PREFACE

1.4 Further Support

Do you still have questions concerning the use of the SIWAREX FTC?
Then please contact your Siemens representative in the office or business location
that is responsible for your area or technical support for SIWAREX
Tel.: [phone].

Updated information on SIWAREX weighing technology can be found on the
Internet Site.

http://www.siemens.de/siwarex

SIWAREX FTC 1-3

2 Scope of Delivery

2.1 Scope of Delivery

A bus connector for the SIMATIC-bus, the conformity details from the manufacturer
and a sheet of additional, current product information belong to the SIWAREX FTC
scope of delivery.

Configuration packages are required for planning projects with the SIWAREX FTC
and these can be ordered separately:

- the SIWAREX FTC project configuration package for SIMATIC S7 for belt
scales

or

Scope of Delivery

- the SIWAREX FTC project configuration package for SIAMTIC PCS7 for belt
scales

The configuration package for SIMATIC S7 is made up of the following
components:

- Commissioning program SIWATOOL FTC_B for Windows

- Set-up for installation of the module in the SIMATIC Manager hardware
catalogue or update HSP (hardware software package)

- Device manuals in several languages

- SIWAREX FTC versions of "Getting started" for belt scale.

Introductory application software SIWAREX FTC „Getting started“ is very helpful
during the first steps in programming. The current version can be obtained free-of­charge via the Internet (http://www.siemens.de/siwarex

The configuration package for SIMATIC PCS7 is made up of the following
components:

- Commissioning program SIWATOOL FTC_B for Windows

- Set-up for installation of the module in the SIMATIC Manager hardware
catalogue or update HSP (hardware support package)

- Device manuals in several languages

- Set-up for PCS7 Library (only configuration package for PCS7 for belt scale)

).

The required or optional accessories are compiled in chapter

SIWAREX FTC 2-4

13 Accessories.

PRODUCT OVERVIEW

3 Product Overview

3.1 General

SIWAREX FTC (Flexible Technology Continuous Weighing) is a versatile and
flexible weighing module.

The function module (FM) SIWAREX FTC is integrated in SIMATIC and uses all
features of the modern automation system such as integrated communication,
diagnostics system and project configuration tools to its advantage.

The scale functionality of the SIWAREX FTC utilizes the following modes of
operation:

 NSW/Non automatic weighing instrument in accordance with OIML R-76

 Force measurement

 Belt scale

 Bulk flow measurement device

 Loss-in-weight scale.

The functionality of belt scale is described in chapter
available for other operating modes.

3.2 Advantages and Benefits

SIWAREX FTC is characterized by a few clear advantages:

o Uniform structure and universal communication through the integration in the

SIMATIC S7 and SIMATIC PCS7

o Standardized configuration with SIMATC

o Direct application in the SIMATIC automation system

o Application in the decentralized system concept through connection to

PROFIBUS-DP via ET 200M

o Weight measurement or force measurement to resolutions of 16 million parts

o Characteristic curve linearisation

o High accuracy 3 x 6000d, legal-for-trade OIML R76 (0,5 V pro e)

5. A separate manual is

o High sample rate of 10 ms

o PID controller with extensive setting options (Loss-in-weight scale)

o Integrated filter functions

o Parameterizable function for inputs and outputs

o Flexible adaptation to different requirements with SIMATIC

SIWAREX FTC

3-5

o Simple parameter definition with the SIWATOOL FTC_B program through the

RS 232 interface

o Exchange of module possible without readjusting the scales

o Scale progress logging – extensive optimization capabilities

o Intrinsically safe load cell supply for Ex-Zone 1 (optional)

o Application in Ex-Zone 2.

o Extensive monitoring and diagnostics functions

3.3 Application Range

SIWAREX FTC is the optimal solution wherever weighing technology requires high
speed and accuracy. Because of the high resolution (3 x 6000 d, legal-for-trade or
16 million parts internally), scales can be built to work accurately over broad areas.
SIWAREX FTC can be used for creating container scales, platform scales, force
measurement devices, belt scales, loss-in-weight scales and bulk flow
measurement devices.

3.4 Structure

SIWAREX FTC is a function module (FM) of the SIMATIC S7-300 and can be read
directly on the SIMATIC S7-300 or ET 200M bus. Installation / cabling efforts for
the 80 mm wide module is simplified with the profile rail assembly (snap-in
technology).

Connection with the load cells is done using 40-pin standard front terminal strips,
the power supply is through a 2-pin plug and the serial interface is through a 9-pin
D-type plug connector.

Operation of the SIWAREX FTC in SIMATIC guarantees complete integration of
weighing technology in the automation system.

3.5 Function

The primary task of the SIWAREX FTC is highly accurate measurement of the
current weight and exact determination of the material quantity.

There are different weighing or measurement procedures, for which the SIWAREX
FTC can be optimally configured by defining parameters.

The following operating modes can be defined:

- Non Automatic Weighing Instrument – in accordance with OIML R-76
Instrument

- Force measurement

- Belt scale

- Loss-in-weight scale

- Bulk flow measurement device

3-6 SIWAREX FTC

PRODUCT OVERVIEW

SIWAREX FTC monito
procedures. The optimized system internal data exchange enables a direct
evaluation of weighing signals and states in the PLC program.

The weighing procedure influence on the PLC enables a flexible adaptation to the
system characteristics.

SIWAREX FTC is already adjusted in-house. Therefore, the scale can be adjusted
to theoretical settings without using any adjustment weights and modules can be
exchanged without readjusting the scale.

The SIWAREX FTC has two serial interfaces. The RS 485 interface is used for
connecting digital remote displays (for operation as a non-automatic weighing
instrument) or force compensation load cells WM, WMH from the Mettler Toledo
company. A PC can be connected to the RS 232 interface for setting SIWAREX
FTC parameters.

The SIWAREX FTC weigh module can also be used in explosion hazard areas
(Zone 2). An optional Ex interface SIWAREX IS provides load cells with an
intrinsically safe power supply for applications in zone 1.

rs and controls a number of functions during the weighing

3.6 System Integration in SIMATIC

SIWAREX FTC is completely integrated in the SIMATIC S7 and SIMATIC PCS7.
The user is absolutely free to configure his automation solution including the
weighing application as desired. The optimum solution can be created for small,
medium and large systems by selectively combining the SIMATIC components.
The configuration package and the SIWAREX FTC "Getting started" example
applications can be used for developing customer-specific or industry-specific
solutions quickly and efficiently. The following figure shows a typical setup for a
medium sized system.

For project planning with SIMATIC PCS 7 (only for belt scales), the completed
function block FB SIWA for the automation system and the graphic blocks for the
operator station are used.

SIWAREX FTC

3-7

Figure 3-1 Configuration of SIMATIC S7/PCS7 with SIWAREX FTC

3.7 Commissioning and Service with SIWATOOL FTC_B

For commissioning and for service, there is a special program - SIWATOOL
FTC_B for belt scales and Windows operating systems.

The program enables commissioning of the scale without having to understand
automation technology. During a service procedures, you can analyze the
processes in the scale and test them with the help of a PC. Reading the
diagnostics buffer from the SIWAREX FTC is very helpful in analyzing events.

Besides complete access to all parameters, memory or print-outs of the weighing
file, the program can create weighing curves as well.

3-8 SIWAREX FTC

PRODUCT OVERVIEW

SIWATOOL
the calibratable scale memory.

The following figure shows the structure of the individual program windows.

FTC_B can also be used for reading the contents of the records from

Figure 3-2

SIWATOOL FTC_B Overview

SIWATOOL FTC_B does not only support the user in entering parameters. It is
very useful to analyze the diagnostic buffer, the contents of which can be saved
along with the parameters after reading from the module.

A trace mode exists in the SIWAREX FTC module for optimizing weighing
progress. The recorded data can be displayed in a curve diagram using MS Excel.
These records can then be used to e.g. analyze and optimize the material flow for
a shift.

3.8 Firmware Download with SIWATOOL FTC_B

Another feature of the SIWATOOL FTC_B program helps in loading a new version
of firmware onto the SIWAREX FTC, on-site. It allows upgrades or function
expansions for the firmware at any time and from anywhere.

3.9 Reading the Stored Weighing Logs with SIWATOOL FTC_B

The weighing logs are stored on an MMC (Micro Memory Card) that can be
inserted into the SIWAREX FTC. If a person disagrees with the results of a certain
weighing procedure, the weighing data for that weighing procedure can be
reconstructed from the MMC memory.

SIWAREX FTC

3-9

4 Hardware Configuration and Assembly

!

Warning Notes

This chapter contains information required for hardware planning, assembly and
preparations for operation.

The technical safety information is to be strictly adhered to.

!

Warning

Unqualified intervention in the device/system or not adhering to the warning notices
can result in serious injury or damage to equipment. Only qualified personnel are
permitted to access the operational components of this device / system.

!

Warning

The unit has been developed, manufactured, tested and documented in
accordance with the corresponding safety standards. The device itself will not
cause any danger to equipment or personal health under normal circumstances.

!

Danger

Commissioning is not permitted until it is guaranteed that the machine in which
these components are to be integrated meets with the guidelines in 89/392/EWG.

4-10 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

4.1 Configuring the Hardware in SIMATIC

SIWAREX FTC is a function module (FM) in the SIMATIC S7 300 automation
system. It can be installed in any position designated for function modules.

Utilization with the SIMATIC S7 300 is possible in central operation, in an
expansion device or decentralized in the ET 200M system.

Operation with the SIMATIC S7 400 is only possible decentralized in the ET 200M
system. In this case, the active back-plane bus can be used.

In estimating the maximum number of SIWAREX FTC's that can be integrated
within one system, the following information may be helpful.

Total width Current requirements

(5V) from SIMATIC back­plane bus

n x 80 mm n x 50 mA 4100 Bytes + n x 1200

Table 4-1 Requirements for n SIWAREX FTC modules

Max. amount in central operation – 8 SIWAREX FTC

Max. amount with multi-line expansion – 8 SIWAREX FTC per line

Max. amount in system ET 200M – 7 SIWAREX FTC per station

Selecting the suitable SIMATIC CPU, the SIMATIC HMI (Human Machine
Interface) and the communication modules does not only depend on
SIWAREX FTC requirements but also on the overall job that the automation
system has to perform.

4.2 Structure to EMC Guidelines

SIWAREX FTC is a highly accurate measuring device that has to dependably
measure the slightest signal. Proper assembly and wiring are therefore absolutely
essential for fault-free operation.

RAM requirements in
SIMATIC CPU

Bytes

4.2.1 Definition: EMC

EMC (Ele
function without faults in a defined electromagnetic environment without being
influenced by its surroundings and without negatively influencing the surroundings.

4.2.2 Introduction

Although SIWAREX FTC was devel
meets high EMC specifications, you should carry out EMC planning before
installing your controller to determine and take into account any possible
interference sources.

SIWAREX FTC

ctromagnetic Compatibility) describes the ability of an electrical device to

4-11

oped for use in industrial environments and

4.2.3 Possible Effects of Interference

Electromagnetic interference can influence the automation system and the
SIWAREX FTC in various ways:

- Electromagnetic fields that have a direct influence on the system

- Interference that infiltrates the environment through bus signals
(PROFIBUS DP etc.)

- Interference through process cabling (e.g. measurement lines)

- Interference infiltrating the system through the power supply and/or protective
ground

Interference can impair the fault-free functioning of the SIWAREX CF.

4.2.4 Coupling Mechanisms

Dep

ending on the means of distribution (conductive or non-conductive bound) and

the distance between the interference source and the device, interference can be
introduced into the automation system through four different coupling mechanisms.

Galvanic coupling

Capacitive coupling

Inductive coupling

Radiation coupling

4.2.5 Five Basic Rules for Guaranteeing EMC

If you follow these five basic rules, EMC can be guaranteed in most cases!

Rule 1: Large surface area grounding connection

Ensure that while installing the automation devices, a well-made large surface area
ground connection is made between the inactive metal components (see following
sections).

Connect all inactive metal components and low-impedance components with
ground (broad cross-section).

Use screwed connections on painted or anodized metal surfaces either with
special contact washers or remove the insulated protective surface at the contact
points.

Do not use aluminum components for ground connections if at all possible.
Aluminum oxidizes easily and is therefore less suitable for grounding connections.

Find a central location for connections between the grounding point and the ground
wiring system.

4-12 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

Rule 2: Prop

Separate the cabling into groups (high-voltage lines, power supply lines, signal
lines, ground wiring, data lines etc.).

Run the high-voltage lines and ground wiring or data cables in separate channels
or bundles.

Run measurement lines as close to grounding surfaces as possible (e.g. support
beams, metal rails, cabinet panels).

Rule 3: Fixed cable shielding

Ensure that the cable shielding is connected properly.

Use shielded data lines only. The shielding must be fastened to ground using a
large surface area on both ends.

The shielding of measurement lines must be fastened to ground on both ends.

Run cable shielding directly under the SIWAREX FTC on the shielding channeling.
The shielding is to be run to the connection terminal.

The connection between the shielding rail / ground rail and the cabinet /housing
must be low impedance.

Use metallic or metal-plated connector housings for the shielded data lines.

er wiring

Rule 4: Special EMC measures

All inductivity that is to be controlled should be connected with suppressors.

Use interference suppressed fluorescent lighting or incandescent lamps for
illuminating cabinets or housings in the immediate vicinity of your controller.

Rule 5: Uniform reference potential

Create a uniform reference potential and ground all electrical operational elements.

If potential differences arise or can be expected between components of your
system, install adequately dimensioned potential equalizing lines. For applications
in areas with a risk of explosion, potential equalization is mandatory.

4.3 Assembly on the Profile Rail

When assembling the SIMATIC components and the SIWAREX FTC, the assembly
regulations must be completely fulfilled for the SIMATIC S7.

SIWAREX FTC is assembled in the following steps:

1. Check for whether the SIMATIC bus connector is connected to the left of the
SIWAREX FTC in the module group.

SIWAREX FTC

4-13

2. Connect the SIMATIC bus connector for the following module group in the
SIWAREX if necessary.

3. Install the shielding strip under SIWAREX.

4. Hang the SIWAREX FTC in its place.

5. Fasten the SIWAREX FTC with 2 screws in the lower area of the module.

6. Label the SIWAREX FTC corresponding with your identification system.

4.4 Connection and Wiring

4.4.1 Connection Areas for SIWAREX FTC

The followi

- Screw-in connector for 24 V power supply

- 40 pin connector for load cell connection, digital input and output, RS 485,

- 9 pin D-sub socket for RS 232 to PC or printer connection

ng connection areas are found on the front:

analogue output, counter input

Figure 4-1

4-14 SIWAREX FTC

SIWAREX FTC front view

HARDWARE CONFIGURATION AND ASSEMBLY

Shielding Connection

4.4.2

Special attent
The interference resistance of the system can only be guaranteed if the properly
constructed.

A cable is shielded to decrease the affects of magnetic, electrical and
electromagnetic interference on this line. Interference on cable shielding is routed
to ground through shielding rails that are conductively connected with the housing.
To ensure that this interference does not become a source of interference, a low
impedance connection to ground is especially important.

Use only lines with mesh-shielding. The shielding should provide at least 80%
coverage.

For fastening the meshed shielding, use only metal cable clamps. The clamps
must cover as much shielding as possible and ensure a good contact.

Shield clamps must be ordered separately from the grounding elements. The area
covered by the shielding clamp is to be chosen corresponding with the cable
diameter.

Approximately 1.5 cm of the cable insulation must be exposed in the area of the
cable to be fastened to the shielding clamp. The exposed shielding is then pressed
firmly against the grounding element with the shielding clamp.

The following figure shows the assembly of the shield clamps.

ion must be given to the shield strip for the shielded lines.

Figure 4-2 Shield clamp assembly

The shielding should be pressed against the shielding rail by the shielding clamp.

SIWAREX FTC

4-15

4.4.3 Connection of 24 V Power Supply

T

he 24 V supply voltage is connected with a screw connector. The connection is found

in the lower area of the module groups next to the D-sub connector for RS 232.

Note

In the S7 300 or ET200M system, the SIMATIC CPU or IM 153 and SIWAREX FTC
must be connected to the same 24 V supply.

Termination Clamp Signal Comment

1L+ 24 V DC 1L+ Power supply +

1M 24 V DC 1M Power supply M

Table 4-2 Power supply connection

4.4.4 Connections to Front Terminal

The SIMATIC con

struction guidelines apply for connecting the 40 pin connector.

Flexible cables with a cross-section of 0.25 to 1.5 mm
insulation from the cable for 6 mm and install wire end sleeves.

4.4.5 Load Cell Connection

rs equipped with strain gauges and that meet the following conditions can be

Senso
connected to the SIWAREX FTC:

- Characteristic value 1.... 4 mV/V

- Supply voltage of 10.2 V is permitted

The connection is made to the 40 pin front connector. The connection should be
made using the cable described in chapter

Termination

Clamp

Signal Comment

X1.34 AGND

2

can be used. Remove the

Accessories.

Analogue ground (is normally not connected,
on where required, e.g. with additional load
cell power requirement)

X1.35 SEN+ Sensor line +

X1.36 SEN- Sensor line -

4-16 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

Termination

p

Clam

Signal Comment

X1.37 SIG+ Measurement line +

X1.38 SIG- Measurement line -

X1.39 EXC+ Load cell supply voltage +

X1.40 EXC- Load cell supply voltage -

Table 4-3 Load cell connections

The following rules are to be followed when connecting load cells (WZ).

Using a junction box is required if more than one LC is connected (the LC must be
connected parallel to one-another).

If the distance from the LC to the SIWAREX FTC is greater than the existing length
of the LC connection cable, then the extension box EB is to be used.

2. The cable shielding is normally run on the cable guide supports of the junction box.

In case of the danger of potential equalization currents on the cable shielding,
a potential equalization conductor is to be run parallel to the load cell cable or the
shield clamp is to be used in the junction box to the shield strip. Using the potential
equalization conductor is the preferred method of dealing with EMC
(Electromagnetic Compatibility).

3. Twisted pair cable is required for the indicated wiring:

- Sensor lines (+) and (-)

- Measurement voltage lines (+) and (-)

- Supply voltage lines (+) and (-)

4. The shielding is to be attached to the shielding strip on the SIWAREX FTC.

The two figures below show the load cell connection using 4-wire and 6-wire
systems.

SIWAREX FTC

4-17

Figure 4-3 Load cell connection in 4-wire system

Figure 4-4 Load cell connection in 6-wire system

4.4.6 Digital Inputs

SIWAREX FTC ha
module group. They have a common reference point (M).

4-18 SIWAREX FTC

s 7 digital inputs. These inputs are potentially isolated from the

HARDWARE CONFIGURATION AND ASSEMBLY

The fun

DI status is indicated with and LED on the front of the SIWAREX FTC.

The inputs may only be activated if your functional allocation is known and the
activation will not cause any harm.

Termination Clamp Signal Comment

ctionality of each input can be defined with parameters.

!

Warning

X1.1 DI 1 Parameter definable function

X1.2 DI 2 Parameter definable function

X1.3 DI 3 Parameter definable function

X1.4 DI 4 Parameter definable function

X1.5 DI 5 Parameter definable function

1.6 DI 6 Parameter definable function

X1.7 DI 7 Parameter definable function

X1.8 2M Reference ground for digital inputs

Table 4-4 Digital input connections

Figure 4-5

Digital inputs

SIWAREX FTC

4-19

4.4.7 Counter Input

The counter input serves for connecting a pulse encoder which is required when
using a belt scale in continuous operation. Twisted pair wiring should be used for
the connections.

Termination Clamp Signal Comment

X1.9 CI+ Counter input +

X1.10 CI- Counter input -

Table 4-5 Pulse encoder connection

Figure 4-6

4.4.8 Digital Outputs

Counter input

The SIWARE
voltage of + 24 V and an output current of maximum 0.5 A per output (max. total
current 2 A).

These outputs are potentially isolated from the module group. The outputs share
common potential. They have a common ground and a secure 24 V supply.
They are short-circuit and overload protected.

DO status is indicated with and LED on the front of the SIWAREX FTC.

When connecting inductive consumers, the digital output that is used must be
equipped with a free-wheeling diode.

X FTC has eight potential isolated outputs (DO) with a nominal

4-20 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

!

The outputs may only be activated if their functional allocation is known and the
activation will not cause any harm.

Termination Clamp Signal Comment

Warning

X1.11 DO 1 Parameter definable function

X1.12 DO 2 Parameter definable function

X1.13 DO 3 Parameter definable function

X1.14 DO 4 Parameter definable function

X1.15 DO 5 Parameter definable function

X1.16 DO 6 Parameter definable function

X1.17 DO 7 Parameter definable function

X1.18 DO 8 Parameter definable function

X1.19 3L+ 24 V for digital outputs

X1.20 3M Ground for digital outputs

Table 4-6 Digital output connections

Figure 4-7

Digital outputs

SIWAREX FTC

4-21

4.4.9 Analog output

Termination Clamp

X1.29 IOUT+ Analogue output +

X1.30 IOUT- Analogue output -

Table 4-7 Analog output connection

Signal Comment

Figure 4-8

4.4.10 Interface RS 485 for Mettler Toledo type WM or WMH

Analog output

Digital sensors from the Mettler Toledo company of type WM or WMH can
be connected to Siwarex. The following interface parameters (data record 3
and 7) are to be set:

(DR3) Device selection: Digital load cell Mettler Toledo
(DR7) Baudrate: 38400
(DR7) Character parity: even
(DR7) Data bits: 7
(DR7) Stop bits: 1

4-22 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

Termination

Clamp

X1.21 485a

X1.22 485b

X1.23 485a

X1.24 485a

X1.25 RTa

X1.26 RTb

X1.11 DO 1

X1.12 DO 2

Table 4-8 RS 485 Connections

Signal Comment

Input Ta

Input Tb

Output Ta

Output Tb
Termination resistor

RTa
Termination resistor
RTb
Send Start instruction
(sir)
Send Stop instruction
(si)

Figure 4-9

Connecting METTLER TOLEDO type WM or WMH some additional
parameters must be set.

SIWAREX FTC

Connecting Mettler Toledo type WM or WMH to RS 485

4-23

4.4.11 RS 485 Interface

Termination Clamp

X1.21 485a Input Ta

X1.22 485b Input Tb

X1.23 485a Output Ta

X1.24 485a Output Tb

X1.25 RTa Termination resistor RTa

X1.26 RTb Termination resistor RTb

Table 4-9 RS 485 connection

Signal Comment

Figure 4-1

4.4.12 Connecting the Remote Display from Siebert

4-24 SIWAREX FTC

0 RS 485 connection

One or m
The displays can only be used for displaying weights in "Non automatic weighing
instrument" operating mode.

ore Siebert Type S102 displays can be connected to the RS485 interface.

HARDWARE CONFIGURATION AND ASSEMBLY

n connecting a single display, ensure that the RTa and RTb bridges are wired.

Whe
When installing the S102 for operation, the same parameters that have been set by
the SIWATOOL FTC for RS 485 are to be defined.

Figure 4-1

1 Connecting the S102 display

4.4.13 Connecting the PC for SIWATOOL FTC

Table

Termination Clamp Signal Comment

X2 9 pin D-type RS 232 Interface

Table 4-10 Connecting the PC

Ready-made cables are available for connecting the PC (see

RS 232 Interface

Accessories)

Figure 4-1

SIWAREX FTC

2 Connecting the PC

4-25

4.4.14 LED Display Elements

Label LED color LED Description
SF Red LED 1 upper

left

Green LED 2

Green LED 4

Green LED 6

EXC Green LED 7
SEN Green LED 8

Table 4-11 Display Elements (LED)

Green LED 3

Green LED 5

System Fault
Hardware fault

Continuous operation active
(flashing)
Write protect for calibration data
activated
Scale in empty range

Scale at stand-still
Micro Memory Card is operation

ready
Load cell supply

Supply voltage feedback from
load cells

4.4.15 Using the Micro Memory Card

Only a SIMATIC Micro Memory Card ca
records or for recording weighing states. Approximately 16 MB of data can be
stored with the MMC described in chapter

!

Warning notice

After formatting the MMC with SIWAREX FTC, it can no longer be used in the
SIMATIC-CPU! Therefore, the MMC should be labeled correspondingly.

n be used for saving the calibratable

Accessories.

4-26 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

4.5 Preparing for Operation

Introduction

Visual check

24 V to
SIWAREX FTC
connection

LED checks on the
SIWAREX FTC

After assembling the module group and making all connections, the next part
of the commissioning process is to perform a partial functionality check on the
SIWAREX FTC and all connected components.
The individual steps for partial testing are to be performed in the following
sequence:

Check all previously performed steps for proper execution, i.e.:

• Is there any external damage to the module group?

• Are the modules situated in the proper positions?

• Are all fastening screws properly tightened?

• Are all connecting cables properly connected and fastened tightly?

• Is the frontal connection made properly?

• Is the shielding properly attached to the shielding conductor for all
corresponding cables?

• Is the profile rail connected to the ground conductor?

• Have all tools, materials or components that do not belong to the S7 or
SIWAREX FTC been removed from the profile rail and the module group?

Turn on power supply on.
Proper initialization of the SIWAREX FTC in the SIMATIC can only be
guaranteed if:

- the S7-CPU (with decentralized connection with IM 153-1) and the
SIWAREX FTC are switched on at the same time

or

- the SIWAREX FTC first.

After applying the 24V supply voltage and a short initialization phase (internal
tests are indicated by LED running sequence), the SIWAREX FTC goes into
operating status. The following LEDs must have the status that is indicated
below if the unit is running correctly:

LED (EXC) --> ON status
LED (SEN) --> ON status
LED (SF) --> OFF status

SIWAREX FTC

4-27

4.6 Application in Ex-Zones

!

D A N G E R E X P L O S I O N
Exists when the installation and setup regulations are not adhered to.

Danger

!

For using the SIWAREX FTC in areas with a risk of explosion, the important
information in the “SIMATIC Automation Systems - Basics of Explosion
protection (Doc.No. A5E00206200)” must be observed!

Below you will find important information on the installation of the
SIWAREX FTC in a hazardous area.

SIWAREX FTC may only be used under the conditions, which are specified
in the appropriate certificates.

The SIWAREX FTC can be used in Ex zone 2 (acc. to IEC/CENELEC,
directive 94/9/EG).

In the following you find some details about the certificates ATEX (Europe)
and UL (USA, Canada).

Certificate: ATEX:

Type Examination Certificate Number: ATEX Nr. KEMA 08ATEX0002 X

Please always observe the relevant safety instructions. These

!

can be accessed on the Internet at

http://support.automation.siemens.com/WW/view/en/29443327

4-28 SIWAREX FTC

HARDWARE CONFIGURATION AND ASSEMBLY

Certificate: c-UL-us haz. loc.

UL file number. USA: NRAG.E239877
UL file number Canada: NRAG7.E239877

Note to c-UL-us haz.loc:

Warning – Explosion Hazard – Do not disconnect while circuit is live unless
area is known to be non-hazardous.

Warning – Explosion Hazard – Substitution of components may impair
suitability for Class I, Division 2.

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D
or non-hazardous locations only.

Connection from load cells to SIWAREX FTC:

The SIWAREX FTC can be connected with load cells in zone 1 or zone 2.
For a connection of load cells in zone 2 it is sufficient, that the load cells

also have an approval for zone 2 and all associated directives as well as
the installation instructions are respected.

For a connection of load cells in zone 1, load cells with the adequate
approvals are needed and appropriate provisions according to the
guidelines must ensure explosion protected operation. For example
SIWAREX R load cells can be connected intrinsically safe via the Ex­Interface SIWAREX IS. The instructions for the Ex-Interface, the load cells
and the ATEX as well as the c-UL-CSA directives have to be respected.

Installation and Maintenance:

Required connection and installation work must be performed by qualified
personnel.

Repairs can only be carried out at the production location.

SIWAREX FTC

4-29

5 Weighing Functions and Parameters

5.1 General

The SIWAREX FTC can be used as a Non Automatic Weighing Instrument, for
force measurement, belt scale, loss-in-weight scale or as bulk flow measurement
device. The operating mode is set once when commissioning the scale in the
adjustment data area (data record 3).

The selected operating mode and the defined parameters are very important to the
behavior of the SIWAREX FTC in the process.

The parameters are set with default values from the manufacturer. Using the
command "Load default values", the parameters defined in the factory are set
again.
The default operating mode is "Belt scale". If you want to run the scale in
another operating mode (e.g. loss-in-weight scale), you have to set the
operating mode during commissioning (e.g. to "Loss-in-weight scale").

The default parameters are defined so that the scale is immediately ready for each
operating mode. Not all parameters must be re-entered for each operating mode.
By changing a parameter, the behavior of the scale is changed respectively.
The advantage of this solution is that you can define how many of the default
values should be retained and how much the behavior of the scale has to be
adapted for the application.

All parameters are split into data records (DR) . The data records are organized
according to process steps (tasks) that you have to perform during the
commissioning phase or during the process itself.
An overview of data records is provided in the following table.

DR

Content / Structure Comment Cross-

No.

3 Adjustment parameter All operating modes

4 Basic parameter All operating modes

5 Belt scale Belt scale (separate manual)

55 Bulk flow measurement device Bulk flow measurement device

6 Differential scale 1 Loss-in-weight scale

7 Interface parameters All operating modes

8 Date / Time All operating modes

9 Application ID All operating modes

10 Differential scale 2 Loss-in-weight scale

reference

5.2

5.4

5.5

5.6

5.7

5.8

5-30 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

DR Content / Structure Comment Cross­No. reference

11 Device characteristic curve Loss-in-weight scale

12 PID controller parameter Loss-in-weight scale

13 Material characteristic curve Loss-in-weight scale

14 Current tilt angle Only belt scale (separate manual)

15 Tare input NAWI, Force, Belt scale

16 Weight simulation value All operating modes

17 Ext. analog default value All operating modes

18 Ext. display default value All operating modes

20 Target_flow_value Loss-in-weight scale

21 Parameter for batch operation Belt scale (separate manual)

26 Internal state All operating modes

30 Process state 1 NAWI, Force measurement, Belt scale

31 Process state 2 All operating modes

32 Process value differential scale Loss-in-weight scale, bulk flow

33 Totals Belt scale, loss-in-weight scale, bulk

34 ASCII weight value All operating modes

35 Cryptodata All operating modes

36 Process values PID-controller Loss-in-weight scale

37 Quality Loss-in-weight scale

40 Log text 1 All operating modes

41 Log text 2 All operating modes

42 Log text 3 All operating modes

43 Log text 4 All operating modes

44 Last log data All operating modes

45 String All operating modes

46 Log ID for requirements through

S7 interface

47 Log output to S7 interface All operating modes

120 MMC-trace data All operating modes

121 RAM-trace data All operating modes

122 MMC-log data All operating modes

123 MMC/RAM-Trace-/Log- process

values

measurement device

flow measurement device

All operating modes

All operating modes

5.10

5.11

5.12

5.13

5.14

5.15

5.16

5.17

5.18

5.19

5.20

5.20

5.20

5.20

5.21

5.22

5.23

5.24

5.25

5.25

5.27

5.26

Table 5-1 Data record overview

In the following parameter description, you will find a description of the weighing
functions that are influenced by that parameter.
The parameters of a data record are shown in a table to start with.
This is then followed by the exact parameter description for the parameters of that
data record. After the receipt of new parameters, SIWAREX FTC performs a

SIWAREX FTC

5-31

plausibility test corresponding with the defined operating mode. If there is a
parameter error then the data record will not be accepted (stored) by the

SIWAREX FTC and a "synchronous" message is generated (see chapter

Messages and Diagnosis

).

5.2 DR3 Adjustment Parameters

The adjustment parameters must be checked for each new scale and must be
changed where necessary and most important, the operating mode must be
defined during commissioning.

The scale is basically defined using the adjustment parameter and by performing
the adjustment. Adjusting the scale can be done using adjustment weights

5.2.1) or theoretically (see 5.3). In verifiable operation as a non-automatic

(see
weighing machine, the data of the DR3 cannot be changed after calibration.

Procedures:

o Check all parameters and change if necessary

o Switch on service operation (command).

7

o Send the DR3 to the scale

o Perform scale adjustment

o Receive DR3 from the scale

o Switch off service operation

Name Type Address Default Range of Values / Meaning Reference

(6) Adjustment
Adjustment digits for
Adjustment zero 0

Adjustment digits for
Adjustment weight 1

Adjustment digits for
adjustment weight 2

Adjustment digits for
Adjustment weight 3

Adjustment digits for
Adjustment weight 4

Adjustment weight 1
(Flow rate with bulk flow
measurement device)
adjustment weight 2
(Flow rate with bulk flow
measurement device)
Adjustment weight 3
(Flow rate with bulk flow
measurement device)
Adjustment weight 4
(Flow rate with bulk flow
measurement device)

DINT DBD000 1398101 0 to: 224

DINT DBD004 15379113 0 to: 2

DINT DBD008 0 0 to: 224

DINT DBD012 0 0 to: 224

DINT DBD016 0 0 to: 224

REAL DBD020 50 > 0

REAL

DBD024 0 ≥ 0

REAL DBD028 0 ≥ 0

REAL

DBD032 0 ≥ 0

Other definitions not permitted.

24

Other definitions not permitted.

Other definitions not permitted.

Other definitions not permitted.

Other definitions not permitted.

Other definitions not permitted.

Other definitions not permitted.

Other definitions not permitted.

Other definitions not permitted.

5.2.1

5.2.1

5.2.1

5.2.1

5.2.1

5.2.1

5.2.1

5.2.1

5.2.1

5-32 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Characteristic value
range

(5) Filter
Filter sequence

Type of low pass filters BYTE DBB038 0 0: critically damped

Limit Frequency

Depth of
average value filter

(1) Adjustment parameter I 0

Scale Name

Number of weight ranges BYTE DBB056 1 1 Range

Scale type

Activate zero setting
upon start-up

Activated zero setting at
start-up, if scale is tared

Automatic zero
adjustment

BYTE DBB036 2 1: Characteristic value to 1mV/V

BYTE DBB037 0 Bit 0 :

BYTE DBB039 4 0: No filter

INT DBW040 10 [0 ... 250] x 10 ms

STRING
[10]

BYTE DBB057 0

DBB042 „SIWAREX

XX“

0

0

0

2: Characteristic value to 2mV/V
4: Characteristic value to 4mV/V
101: Characteristic value +/- 1mV/V (force
measurement, bi-directional)
102: Characteristic value +/- 2mV/V (force
measurement, bi-directional)
104: Characteristic value +/- 4mV/V (force
measurement, bi-directional)
Other definitions not permitted.

0: Average value filter before digital filter
1: Digital filter before average value filter

Bits 1 to 7 not set

1: Bessel filter
2: Butterworth filter
Other definitions not permitted.

1: fg = 20Hz
2: fg = 10Hz
3: fg = 5Hz
4: fg = 2Hz
5: fg = 1Hz
6: fg = 0.5Hz
7: fg = 0.2Hz
8: fg = 0.1Hz
9: fg = 0.05Hz
Other definitions not permitted.

0: Average value filter deactivated

Other definitions not permitted.

2 Ranges
3 Ranges
Other definitions not permitted.
Bit 0::
0: Multi-range scale
1: Multi-resolution scale

Bit 1:
0: Switch-on zero setting device switched off;
1: Switch-on zero setting device switched on

Bit 2:
0: Switch-on zero setting, not when tare  0
1: Switch-on zero setting performed with tare  0

Bit 3:
0: Zero tracking device switched off;
1: Zero tracking device switched on

Bit 4 - 7 not set

5.2.2

5.2.3

5.2.4

5.2.5

5.2.6

5.2.7

5.2.8

5.2.9

5.2.10

5.2.11

5.2.12

(2) Calibration parameter
II
Minimum weight for
Weighing range 1

REAL DBD058 1

5.2.13

SIWAREX FTC

5-33

Name Type Address Default Range of Values / Meaning Reference

Maximum weight for
weighing range 1
Numeral step for
weighing range 1

Minimum weight for
Weighing range 2
Maximum weight for
weighing range 2
Numeral step for
weighing range 2

Minimum weight for
Weighing range 3
Maximum weight for
weighing range 3
Numeral step for
weighing range 3

(3) Calibration parameter
III
Standstill Time

Standstill Range

Wait time for standstill TIME DBD102 2000 If there is no standstill, the weighing command

Max. negative weight for
zero setting when
switching on

Max. positive weight for
zero setting when
switching on

Maximum negative
weight for zero setting

Maximum positive weight
for zero setting

Tare max. weight T-

REAL DBD062 100

REAL DBD066 0,02 Number step weighing range 1 (1*10 k, 2*10k,

REAL DBD070 0

REAL DBD074 0

REAL DBD078 0

REAL DBD082 0

REAL DBD086 0

REAL DBD090 0

TIME DBD094 1000 ms

REAL DBD098 0,02 Standstill range in weight unit

BYTE DBB106 10 Neg. Range of the switch-on zero setting device

BYTE DBB107 10 Pos. range for switch-on zero setting device [in

BYTE DBB108 1 Neg. Range of zero setting device [in % of

BYTE DBB109 3 Neg. Range of zero setting device [in % of

BYTE DBB110 100 Subtractive tare device range

k

5*10

, k ∈ N0)

Other definitions not permitted.

Number step WB2 (1*10

Other definitions not permitted.

Numeral step WB3 (1*10

Other definitions not permitted.

is immediately rejected with an operating error
at setting 0 and otherwise the wait time is
waited through. If no standstill has occurred
after the wait time has elapsed, an error
message is generated and the command is
aborted. For weighing commands (zero setting,
taring in operation as non-automatic weighing
instrument) that are activated by an operator, a
setting in the 2000 ms range is a good idea.

[in % of WB
(Entry from Pos- + Neg. Zero setting value may
not exceed 20% for country code „OIML“)
Deactivated for loss-in-weight scale.

% of WB
(Entry from Pos- + Neg. Zero setting value may
not exceed 20% for country code „OIML“)
Deactivated for loss-in-weight scale.

WB

max

(Entry from Pos- + Neg. Zero setting value may
not exceed 4% for country code „OIML“)

WB

max

(Entry from Pos- + Neg. Zero setting value may
not exceed 4% for country code „OIML“)

[in % of WB
[in % of WB
(Entry may not exceed 100% with country code
"OIML")

]

max

]

max

]

]

with multi-range scale]

max

with multi-resolution scale]

1

k

, 2*10k, 5*10k, k ∈ N0)

k

, 2*10k, 5*10k, k ∈ N0)

5.2.14

5.2.15

5.2.16

5.2.17

5.2.18

5.2.19

5.2.20

5.2.21

5.2.22

5.2.23

5.2.24

5.2.25

5.2.26

5.2.27

5.2.28

5.2.29

5-34 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Operating mode

Reserve_3_110 BYTE DBB112 0 Reserved
Load cell type

Timeout digital LC WORD DBW110 240 Timeout in ms for receiving the cyclic weight

Regulations STRING

Weight unit

Weight unit large STRING

Length unit STRING

U Factor REAL DBD138 1000 Conversion factor weight unit > Large weight

Determination time 3

144

BYTE DBB111 0 Operating mode:

BYTE DBB109 0 0: analog load cell

[4]
STRING
[4]

[4]

[2]

TIME DBD140 10000 Adjustment or zero setting time for dynamic

DBB116 “----“ "OIML" : = Regulation code OIML

DBB122 kg Weight unit

DBB128 t Large weight unit

DBD134 m Length units (belt scale only)

0 NAWI filling procedure
1 NAWI emptying procedure
2 Force measurement
3 Belt scale
4 Loss-in-weight scale
5 Bulk flow measurement device

1: METTLER TOLEDO type WM or WMH

2...255 analog load cell

value of the digital load cell

"----": = No regulation code

unit

zero setting, taring or adjusting 0... max. 900
000 ms (belt scale only)

5.2.30

5.2.37

5.2.38

5.2.39

5.2.40

5.2.41

5.2.42

5.2.43

5.2.44

Table 5-2 DR3 Allocation

5.2.1 DR3 - Adjustment Digits 0, 1, 2, 3, 4, for the Zero Point and Adjustment Weights 1,
2, 3

, 4

The analog measurement value coming from the load cells is converted into a
digital value with an analog-digital converter. A weight value is then calculated from
this digital value. All functions of the SIWAREX FTC then uses this weight value for
executing their task.

To calculate the weight value from the digital value, the characteristic curve of the
measurement system must be determined. In the simplest case, the characteristic
curve is defined by points 0 and 1. The first operating point (point 0) is always
determined by the empty scale alone with its own construction weight. The weight
of its own construction, the scale load cells deliver a measurement voltage to the
SIWAREX FTC. After the analog-digital conversion of the measurement voltage,
the digital value (adjustment digit 0) is assigned the zero point (zero weight).

For determining the average value of the adjustment point for the belt scale (zero
point, adjustment weight) over a predefined period of time, the determination time
must be defined. This time entry is not applicable for other operating modes.

If the scale is loaded with a known calibration weight (e.g. with 50 % of the
measurement range), then the second operation point can be determined. The new
digital value from the analog-digital converter is now assigned the calibration weight.

The characteristic curve can be further adjusted using a maximum of three other
points that must lie above point 1.

SIWAREX FTC

5-35

Ensure that the difference between two adjustment weights is at least 5% of the
measurement range.

The adjustment consists of the following steps:

Define adjustment weights and other parameters of the DR 3 data record.

Send DR 3 to the scale

With an empty scale, give the command "Valid adjustment weight = 0"

Load the scale with the defined calibration weight

Give the command "Valid adjustment weight = 1"

Receive DR 3 from the scale

Save the data to a data carrier

The adjustment sequence for the increasing adjustment weights must be retained.

Example:

Zero point = 0.0 kg (always) produces 5 800 000 digits

Adjustment weight 1 = 100 kg produces 10 100 000 digits

This defines the characteristic curve (0 is entered as the weight value for further
adjustment weights) and the scale can now perform the calculations for the weight
values over the entire measurement range.

Note:

Since the maximum value for adjustment digits is 15 379 113 and the value for
completely empty load cells (without the weight of the construction itself) is
1 398 101 the plausibility of the characteristic curve can be roughly estimated to
determine load deviations for example.

The illustration shows the relationship between the adjustment digits and the
adjustment weight of the scale.

5-36 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

FIGURE 5-1

Adjustment Digits and Weight Value

If the adjustment weights and adjustment digits of a SIWAREX FTC are known then
the adjustment procedure does not need to be performed. They are simply sent to
the SIWAREX FTC in the DR3 data record and the scale is immediately operational
(after official calibration of the scale, it is no longer possible to send DR3).

The SIWATOOL FTC program supports you in quickly performing and adjustment.

Option 1:

After commissioning and after adjustment, all data records for the scale are read
from SIWAREX FTC and are stored as a scale file ScaleX.FTL.

Identical scales can now be put into operation immediately. Connect the PC to the
new scale and activate the "Send all data records" function. This also transfers the
adjustment weights and the adjustment digits - the characteristic curve is defined
immediately. Of course, the same applies for exchanging a SIWAREX FTC.

Option 2:

Use the SIWATOOL FTC „Theoretical adjustment“ function and determine the
characteristic curve of the scale from the technical data of the load cells alone.
The case assumes proper construction of the scale (see

5.3).

SIWAREX FTC

5-37

Note

Normally, defining two operating points is sufficient to determine the characteristic
curve for the scale. Other operation points must only be defined on non-linear
systems - New digital values (adjustment digits 2, 3, 4) are assigned with other
calibration weights (e.g. 70%, 80%, 100% of the measurement range).

FIGURE 5-2

Linearization of the scale characteristic curve

The characteristic curve is converted for bi-directional operation in "Force
measurement" operating mode. The following image shows the relationship
between effective force and the adjustment digits.

FIGURE 5-3

5-38 SIWAREX FTC

Adjustment Digits and Force

WEIGHING FUNCTIONS AND PARAMETERS

DR3 - Characteristic Value Range

5.2.2

ending on the characteristic value of the connected load cells, the value

Dep
1 mV/V, 2 mV/V or 4 mV/V must be selected. Since the SIWAREX FTC supplies
the load cells with approximately 10 V, the measuring input is redefined according
to the expected measurement voltage (max. 10 mV, max. 20 mV or max. 40 mV).

For example, if the characteristic value of the connected load cells is 2.85 mV/V
then the next higher characteristic value must normally be set, i.e. 4 mV/V.

For bi-directional force measurement, the characteristic value range should be
defined as +/-.

5.2.3 DR3 – Filter Sequence for the Signal Filter

nging the filter sequence can be an advantage in some cases. Normally,

Cha
the signal is first filtered by the average value filter.

5.2.4 DR3 - Type of Low-Pass Filters

For the supp
been prepared for selection (critically damped, Bessel filter, Butterworth filter).
The selection is performed empirically. The following images show the step
response of the three filters (fg = 2 Hz).

For the suppression of the interferences in average values, separate filters are

ctivated in the parameters for the respective operating mode. a

ression of interference to the weight display, 3 types of filters have

FIGURE 5-4 Step responses of the digital low-pass filter

SIWAREX FTC

5-39

5.2.5 DR3 - Limit Frequency

Defining the limit frequency is critically important for suppressing interference.
The "speed" of the scale's reaction to the change in the measured value is
determined by specifying the limit frequency.

A value of e.g. 2 Hz leads to a relatively quick scale reaction to a weight change,
a value of e.g. 0.5 Hz makes the scale "sluggish".

5.2.6 DR3 - Depth of Average Value Filters

The average
The weight value is based on the average of the n weight values that the
SIWAREX FTC calculates every 10 msec, e.g. if n=10, 10 values are used for
calculating the average value. Every 10 ms, the oldest value drops out of the
calculation and the newest is considered in the calculation.

5.2.7 DR3 - Scale Name

The nam

Note

The scale name can no longer be changed after official calibration.

5.2.8 DR3 - Number of Weight Ranges

SIWAREX FTC ca
measurement ranges. Depending on the construction type certification, the
numeral step can be defined separately for every range. Normally, only one
measuring range is used in the force measurement and continuous weighing (belt
scale, bulk flow measurement device) operating modes.

5.2.9 DR3 - Scale Type

If the number of range
multi-range scale or a multi-resolution scale.

value filter is used to settle the weight value against interference.

e consists of a maximum of 10 characters and can be freely selected.

n be defined as a scale with one, two or three different

s is greater than one then the scale type can be defined as a

Information on the function of a multi-range- or multi-resolution-scale can be found
in EN 45 501.

Note

If only one range is defined then this entry is meaningless.

5.2.10 DR3 - Activate Zero Setting upon Switching On

The scale
On verifiable scales, a weight value of +/- 10% of the max. measurement range
can be set to zero on start-up.

can be set to zero automatically by switching the supply voltage on.

5-40 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

!

Attention

In non-verifiable operation (no OIML restrictions), a full scale can also be set to
zero after activating this function. Limiting the effectiveness is possible by entering
the max. and min. weight however. See Max. Min. weight for zero setting upon
switch-on. In operating modes "Belt scale" and "Loss-in-weight scale", this function
cannot be activated.

5.2.11 DR3 - Activated Zero Setting upon Switch On, If Scale Tared

The scale
If the function above is activated, there is still the question of whether zero setting
at start-up should be run if the tare weight is unequal to zero.

If yes, the tare weight is also deleted with the zero setting and if no, no zero setting
is performed on the scale.

5.2.12 DR3 - Automatic Zero Adjustment

Zero
required. The automatic zero adjustment sets the scale to zero without an
instruction if it slowly drifts away from the zero point. Slow drifting is presumed if
the conditions of standard EN45501 have been met. This function is executed as a
dynamic zero setting function in the "Belt scale" operating mode.

can be set to zero automatically by switching the supply voltage on.

setting the scale can be performed with the "Zero setting" instruction if

This function has no effect in the "Loss-in-weight scale" operating mode.

!

Attention

In non-verifiable operation (no OIML restrictions), after activating this function,
the scale can indicate zero after a slow drift over time if it is full. When using this
function, overloading the scale must be prevented with suitable measures.

5.2.13 DR3 - Minimum Weight for Weighing Range 1

The cu
step for measurement range 1) only above the minimum weight. The minimum
weight is defined by an adjustment or a calibration. The minimum weight depends
on the number and type of load cells used.

The value can be set to 0 on non-calibrating scales.

5.2.14 DR3 - Maximum Weight for Weighing Range 1

The cu
measurement range 1) only under the maximum weight. The maximum weight is
defined during adjustment. The maximum weight depends on the number and type
of load cells used and the required weight range.

rrent weight value can be used for verifiable recording (with the numeral

rrent weight can be used for calibrating purposes (with the numeral step for

SIWAREX FTC

5-41

5.2.15 DR3 - Minimum Weight for Weighing Range 1

The numeral step for weighing range 1 can be defined corresponding with standard
EN 45501 (0.0001 to 50).

5.2.16 DR 3 - Minimum Weight for Weighing Range 2

The cu
step for measurement range 2) only above the minimum weight. The minimum
weight is defined by an adjustment or a calibration. The minimum weight depends
on the number and type of load cells used. The value can be set to 0 on non­calibrating scales.

Note

If only one weighing range is defined (such as e.g. for the belt scale or loss-in­weight scale), then this definition is meaningless.

5.2.17 DR 3 - Maximum Weight for Weighing Range 2

The cu
measurement range 2) only under the maximum weight. The maximum weight is
defined during adjustment.

The maximum weight depends on the number and type of load cells used.

Note

If only one weighing range is defined then this entry is meaningless.

5.2.18 DR 3 - Minimum Weight for Weighing Range 2

The num
EN 45501 (0.0001 to 50).

rrent weight value can be used for verifiable recording (with the numeral

rrent weight can be used for calibrating purposes (with the numeral step for

eral step for weighing range 2 can be defined corresponding with standard

If only one weighing range is defined then this entry is meaningless.

5.2.19 DR 3 - Minimum Weight for Weighing Range 3

The cu
step for measurement range 3) only above the minimum weight. The minimum
weight is defined by an adjustment or a calibration. The minimum weight depends
on the number and type of load cells used.

The value can be set to 0 on non-calibrating scales.

Note

If only one or two weighing ranges are defined then this entry is meaningless.

5.2.20 DR 3 - Maximum Weight for Weighing Range 3

The cu
measurement range 3) only under the maximum weight. The maximum weight is
defined during adjustment.

The maximum weight depends on the number and type of load cells used.

Note

If only one or two weighing ranges are defined then this entry is meaningless.

rrent weight value can be used for verifiable recording (with the numeral

rrent weight can be used for calibrating purposes (with the numeral step for

5-42 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

5.2.21

DR 3 - Numeral Step for Weighing Range 3

The num
EN 45501 (0.0001 to 50).

Note

If only one or two weighing ranges are defined then this entry is meaningless.

5.2.22 DR 3 - Standstill Time

Standstill mo

Scale standstill is determined if the weight value changes by less than a defined
deviation range (standstill value) within a defined time (standstill time). Standstill is
used in static operation of the scale (Command: Zero setting, Taring, Output log).

5.2.23 DR 3 - Standstill Range

Standstill mo

Scale standstill is determined if the weight value changes by less than a defined
deviation range (standstill value) within a defined time (standstill time). Standstill is
used in static operation of the scale (Command: Zero setting, Taring, Output log).

T he figure below illustrates the functioning of the standstill monitoring feature.

eral step for weighing range 1 can be defined corresponding with standard

nitoring is used to identify when the scale is at a stable equilibrium.

nitoring is used to identify when the scale is at a stable equilibrium.

FIGURE 5-5

5.2.24 DR 3 - Waiting Time for Standstill

SIWAREX FTC

Standstill Monitoring

To preve
setting in static operation) immediately when the stable weight of the scale is not
defined, the waiting time is given as standstill. If the scale instruction tare, output

nt having to cancel a weighing instruction (only taring, printing and zero

5-43

log or zero setting was not possible after this time has elapsed then the
corresponding technology message generated.

5.2.25 DR 3 - Maximum Negative Weight for Zero Setting upon Switch On

setting means that an automatic zero setting is performed for the scale when

Zero
the supply voltage is switched on.

If zero setting upon switching on the supply voltage has been activated, then the
definition will limit the affect of the function. The reference point for the
effectiveness of the limitation is not the current weight, it is the weight that was
displayed by the scale without a previous zero setting. In operating modes "Belt
scale" and "Loss-in-weight scale", this function is not effective.

5.2.26 DR 3 - Maximum Positive Weight for Zero Setting upon Switch On

setting means that an automatic zero setting is performed for the scale when

Zero
the supply voltage is switched on.

If zero setting upon switching on the supply voltage has been activated, then the
definition will limit the affect of the function. The reference point for the
effectiveness of the limitation is not the current weight, it is the weight that was
displayed by the scale without a previous zero setting. In operating modes "Belt
scale" and "Loss-in-weight scale", this function is not effective.

5.2.27 DR 3 - Maximum Negative Weight for Zero Setting

The cu

For zero setting, the specification can be used to limit the effect of the function.
The reference point for the affect of the limitation is not the current gross weight.
It is the weight that the scale would show without a previous zero setting.

For scales in calibrating operation, the limit between the negative and positive
weight for zero setting is 4% of the maximum weighing range.

5.2.28 DR 3 - Maximum Positive Weight for Zero Setting

For zero setti
The reference point for the effectiveness of the limitation is not the current weight,
it is the weight that was displayed by the scale without a previous zero setting.

For scales in calibrating operation, the limit between the negative and positive
weight for zero setting is 4% of the maximum weighing range.

5.2.29 DR 3 - Tare max. Weight T-

SIWAREX FTC acce
maximum weighing range with multi-range scales or weighing range 1 with a multi­resolution scale.

On scales in verifiable application, the value is limited to 100% of the maximum
weighing range.

rrent gross weight of the scale is defined as zero for zero setting.

ng, the specification can be used to limit the effect of the function.

pts every weight value which is less than %-record of the

5.2.30 DR 3 – Operating Mode

This pa
weighing operating modes applies depending on the task description.

5-44 SIWAREX FTC

rameter can be used to select the suitable weighing program. One of these

WEIGHING FUNCTIONS AND PARAMETERS

Defining

the operating mode is done during the initial commissioning of the
module by sending the adjustment data record DR 3 with the newly defined
operating mode.

Data records or individual parameters, which have no effect in a certain operating
mode, are also taken and stored in the SIWAREX FTC module.

The following operating modes can be defined:

- 0 - non-automatic weighing instrument (OIML R 76) for fill scales

- 0 - non-automatic weighing instrument (OIML R 76) for emptying scales

- 2 - Force measurement (bi-directional)

- 3 – Belt scale (Default value, Description in separate manual)

- 4 - Loss-in-weight scale

- 5 - Bulk flow measurement device

5.2.31 DR 3 - Weighing Operating Mode: NAWI Filling Procedure

Non

-automatic weighing instrument (NAWI) - according to OIML R-76 - only
accepts the service and adjustment instructions and weighing instructions "zero
setting" and "taring". The net weight increases with increasing load on the scale.

5.2.32 DR 3 - Operating Mode: NAWI Emptying Procedure

-automatic weighing instrument (NAWI) - according to OIML R-76 - only

Non
accepts the service and adjustment instructions and weighing instructions "zero
setting" and "taring". The net weight increases with decreasing load on the scale.

5.2.33 DR 3 - Operating Mode: Force Measurement

This op

erating mode is not legal-for-trade. The scope of functionality is similar,
but with operating mode "non-automatic weighing instrument filling procedure".
The difference is in the ability to use the measuring range in the positive and
negative direction.

5.2.34 DR 3 - Operating Mode: Belt Scale

In operatin

g mode Belt scale, the parameters from the DR 5 are also evaluated.
The scope of functionality is designed for operation with a belt scale. The belt scale
is described in a separate manual.

5.2.35 DR 3 - Operating Mode: Loss-in-weight Scale

In operatin

g mode Loss-in-weight scale, the adjustment parameters from data
records DR 6, DR 10, DR 11, DR 12 and DR 13 are also evaluated. The scope of
functionality is designed for operation with a loss-in-weight scale.

5.2.36 DR 3 - Operating Mode: Bulk Flow Measurement Device

In operatin
the DR 55 are also evaluated. The scope of functionality is designed for operation
with a bulk flow measurement device.

SIWAREX FTC

g mode Bulk flow measurement device, the adjustment parameters from

5-45

5.2.37 DR 3 - Load cell type

Analog load cells (strain gauge full bridge sensor) as well as sensorsfrom
the Mettler Toledo type WM or WMH can be connected to the SIWAREX
FTC. This information defines which interface that the signal comes from:

- via the connection with strain gauge analog load cells

- via RS 485 with sensors type WM or WMH

After selecting the sensors METTLER TOLEDO Type WM or WMH,
settings must be made in data record DR 7 for the RS485 interface (see

4.4.10 )

In data record 3, the adjustment digits and adjustment weight must be
defined:

o Adjustment digits for zero point = 8388608
o Adjustment digits 1 = 13388608
o Adjustment digits 2, 3, 4 = 0
o Adjustment weight 1 = 5000000/ digital value per weight unit e.g. if

10000d/kg was sent from the sensor 5000000/10000=500

o Adjustment digits 2, 3, 4 = 0

The application-dependent sensor parameters are set using the tools for
defining parameters for the WM or WMH sensors.

The following settings (with instructions) must be made for communication
with SIWAREX FTC:

- RS422 interface settings:

o PROT_2 (Basic protocol)
o COM_1_8_0_0 (Interface RS422, 38400 baud, 7 Bits, even

parity, 1 stop bit)

- Setting the digital inputs:

o DIN1_SIR_0_1 (Input 1 for the SIR instruction, positive edge,

output via RS422)

o DIN1_SI_0_1 (Input 1 for the SIR instruction, positive edge,

output via RS422)

5.2.38 DR 3 – Monitoring time for the digital load cells

The receipt of the cyclic weight telegrams from the load cell type types WM,
WMH is monitored. If no telegram is received for the defined time period (in
ms), SIWAREX FTC indicates an operational fault No. 24 – Digital load cell
not ready. A status bit also provides (Status NAWI, Bit 29) the information
on whether the digital load cell is ready. If the status bit is not set, the

5-46 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

weight values are not evaluated because no plausible weight values have
been received.

5.2.39 DR 3 - Regulations

Scales in calibrating operation are subject to certain restrictions. The "OIML" entry
activates these restrictions. To deactivate them, it is necessary to enter "----".
The entry „OIML“ only makes sense if the scale is to be verifiable as a non­automatic weighing instrument.

5.2.40 DR 3 - Weight Unit

sition character sequence can be defined as the unit of measurement,

A 4-po
e.g.: g, kg, lbs

5.2.41 DR 3 – Large Weight Unit

A 4 characte

The relationship between the mass unit of measurement and the measured unit of
measurement is determined with a factor e.g. 1,000. The large weight unit is
advantageous when defining quantities that refer to a longer period of time,
e.g. belt quantities per hour.

5.2.42 DR 3 - Length Unit (belt scale only)

The length u
to this definition.

The parameter only has an effect in the operating mode "Belt scale".

5.2.43 DR 3 - Conversion Factor

The co
large weight unit. The factor can be defined as required.

Example:

Weight unit: kg

Large weight unit: t

Conversion factor 1000,0

5.2.44 DR 3 – Determination Time (belt scale only)

r string can be defined as the unit of measurement e.g.: t.

nit is used for defining the belt length. Calculating the belt load refers

nversion factor indicates the relationship between the weight unit and the

With a static
immediately after activating the instruction during the adjustment. Zero setting is
also executed immediately when defining a stable weight.

A determination time can also be defined for this instruction for the belt scale. The
scale runs the determination of the operation point during the defined
determination time as an average value of all measurements and the average
value is output after the determination time has elapsed.

The determination time applies for the following instructions: zero point valid,
adjustment weight 1...4 valid, zero setting, taring.

Example:

SIWAREX FTC

scale (determination time = 0), the operation points are determined

5-47

If the determination time is set to 10 000 ms, a new weight is determined e.g. every
10 ms with the "Zero setting"instruction. After 10 seconds have elapsed,
the average value of all measurements will be defined as a new adjustment point.

5.3 Theoretical Adjustment – Adjustment Without Adjustment Weights

If performing the adjustment is not possible using adjustment weights, the scale
can also be put back into operation without adjustment weights, if the mechanical
structure of the scale is correct and the measuring logs are available for the
individual load cells. Execution is handled with the help of SIWATOOL FTC_B
(not in operating mode "Force measurement") during the processing of the
adjustment parameters. We call the procedure "theoretical adjustment".

First, the characteristic value range (1mV/V, 2mV/V or 4mV/V)must be defined in
the "Adjustment" tab of the data record for the adjustment data. Then, switch to the
"Theoretical adjustment" tab.

To execute the theoretical adjustment, the rated load for all load cells is defined
first, e.g. 3 load cells with 1,000 kg each result in a rated load of 3,000 kg.
The adjustment zero offset (unit μV), and the characteristic value (unit mV/V) is
then entered for each individual load cell. These values are taken from the
respective load cell measurement log. The characteristic value is normally entered
with up to 5 decimal places, e.g. 2.01201.

After entering the data for each load cell, the adjustment digits are calculated and
the result is displayed by actuating the button "Calculate adjustment digits". Then,
the calculated adjustment digits can be integrated into the data record with
adjustment data (DR 3) by actuating button "Accept calculation". The data record is
then sent to the weigh module with the new adjustment data.

Depending on the mechanics of the device, a completely empty scale may indicate
a value that deviates from the adjustment zero slightly. In this case, the instruction
"Characteristic curve shift" can be executed.

5.4 DR 4 Basis Parameter

The basis parameters define other features of a scale, which are responsible for
the basic behavior. The parameters must be checked and sometimes have to be
changed. DR 4 is not subject to write protection in calibrating operation.

Procedures:

o Check all parameters and change if necessary

o Send the DR 4 to the scale

Name Type Address Default Range of Values / Meaning Reference

Reserve_4_0 BYTE DBB000 0 Reserved
Reserve_4_1 BYTE DBB001 0 Reserved
Reserve_4_2 WORD DBW002 0 Reserved
Monitoring time for

recording

Device for log output BYTE DBB008 1 Bit 0 :

TIME DBD004 2000 Time within which, a recording task must be

ended (msec)

0 = Log output to RS232 interface
1 = Log output to MMC

5.4.1

5.4.2

5-48 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Reserve_4_9 BYTE DBB009 0 Reserved
Basis weight for limit

value 1

Basis weight for limit
value 2

Basis weight for the
empty range

Reserve_4_11 BYTE DBB011 0 Reserved
Empty range

Switch-on weight
Limit value 1
Cut-off weight
Limit value 1
Switch-on weight
Limit value 2
Cut-off weight
Limit value 2
Switch-on weight
Limit value 3
Cut-off weight
Limit value 3

40

BYTE DBB010 0

0

REAL DBD012 1

REAL DBD016 1

REAL DBD020 1,1

REAL DBD024 50

REAL DBD028 49

REAL DBD032 99

REAL DBD036 98

Bits 1 to 7 not used

Bit 0 :
0 = Basis for limit value 1 is the gross weight
1 = Basis for limit value 1 is the net weight
Bit1 :
0 = Basis for limit value 2 is the gross weight
1 = Basis for limit value 2 is the net weight
Bit 3 :
0 = Basis for the empty range is the gross
weight
1 = Basis for the empty range is the net
weight
Bits 4 to 7 not used

For filling procedures, this depends on
parameters, for emptying procedures relative
to gross. With the loss-in-weight scale: Limit
value for ending the emptying run.
Switch-on weight
Limit value 1
Cut-off weight
Limit value 1
Switch-on weight
Limit value 2
Cut-off weight
Limit value 2
Limit value 3 corresponds with overfill limit

Cut-off weight limit value 3

5.4.3

5.4.4

5.4.5

5.4.6

5.4.7

5.4.8

5.4.9

5.4.10

5.4.11

5.4.12

Table 5-3 Allocation of DR 4

5.4.1 DR 4 - Monitoring Time for Logging

If logging of the wei

ghing results is generated by an instruction or automatically,
SIWAREX FTC monitors whether the procedure has been completed within the
predefined time. If not, an error is generated.

5.4.2 DR 4 - Device for the Log Output

s can be output to a connected printer or to the Micro Memory Card (MMC).

Log
The contents of the log are defined in data records DR 40 to DR 43.

5.4.3 DR 4 - Basis Weight for Limit Value 1

The limit values can be d

efined in relation to the gross weight or the net weight of

the scale.

5.4.4 DR 4 - Basis Weight for Limit Value 2

The limit values can be d

efined in relation to the gross weight or the net weight of

the scale.

SIWAREX FTC

5-49

5.4.5 DR 4 - Basis Weight for Monitoring the Empty Range

The limit value for the monitoring of the empty range can be defined in relation to
the gross weight or the net weight of the scale.

5.4.6 DR 4 - Empty Range

The value for
"empty" status to the SIWAREX FTC which gives this out as status information.

In operating mode Loss-in-weight scale, emptying in automatic mode is ended if
the value drops below the limit value.

5.4.7 DR 4 - Switch-on Weight Limit Value 1

-on and shut-off weights can be defined separately for a limit value. In this

Switch
way, a minimum value monitor and a maximum value monitor can be realized by
hysteresis. A maximum value monitor is realized with the following specification:

Switch on value > Switch off value

A minimum value monitor is realized with the following specification:

Switch on value < Switch off value

The following image shows the functionality of limit values 1, 2, 3

the empty range is a limit value, that when exceeded indicates the

FIGURE 5-6

5.4.8 DR 4 - Cut-off Weight Limit Value 1

5.4.9 DR 4 - Switch-on Weight Limit Value 2

5-50 SIWAREX FTC

Defining limit value parameter

See: Switch

See: Switch

On Weight, Limit Value 1

On Weight, Limit Value 1

WEIGHING FUNCTIONS AND PARAMETERS

5.4.10

DR 4 - Cut-off Weight Limit Value 2

See: Switch

On Weight, Limit Value 1

5.4.11 DR 4 - Switch-on Weight Limit Value 3

The switch

-on and cut-off weight can be defined separately for the limit value.
With limit value 3, only the maximum weight monitor can be used. The basis weight
for the limit value 3 is always the gross weight.

5.4.12 DR 4 - Cut-off Weight Limit Value 3

n the limit value is undercut, the status information "limit value 3) is reset.

Whe

5.5 DR 5 Belt Scale Parameter

The basis parameter for belt scale defines other features of a scale which are
responsible for the behavior in the belt scale operating mode. The parameter must
be checked and changed in some cases.

Procedure:

o Check all parameters and change if necessary.

o Send the DR 5 to the scale

Name Type Address Default Range of Values / Meaning Reference

Nominal speed

Time basis for belt
speed

Pulse constant

Constant belt speed

Minimum belt speed INT DBW016 800 Limit value for minimum belt speed in % of

Maximum belt speed INT DBW018 1020 Limit value for maximum belt speed in % of

Reaction time for belt
monitor
At start
Reaction time for belt
monitor
During operation
Reserve_5_28 REAL DBD028 Reserved

Nominal flow-rate

Effective belt length

Correction factor for
flow-rate

Minimum flow-rate INT DBD044 Limit value for minimum flow-rate in % of the
Maximum flow-rate INT DBD046 Limit value for maximum flow-rate in % of the

REAL DBD000 0

TIME DBD004 0 Time basis for measuring the belt speed by

REAL DBD008 0 Pulse constant of the speed sensor

REAL DBD012 2000 Constant speed if no speed sensor is

TIME DBD020 Reaction time for belt monitoring and belt

TIME DBD024 Reaction time for belt monitoring and belt

REAL DBB032 Nominal flow-rate in weight units / s

REAL DBB036 Effective belt length in length units LU

REAL DBB040 Correction factor for the flow rate

Nominal speed of the belt in LU/s (Length
units per second)

impulse counter input (msec)

connected.
0 – for connecting the speed sensor.

the nominal speed.
800 corresponds with 80.0 %

the nominal speed.
1020 corresponds with 102.0 %

cycle error message at belt start

cycle error message during belt operation

nominal flow-rate

nominal flow-rate

5.5.1

5.5.2

5.5.3

5.5.4

5.5.5

5.5.6

5.5.7

5.5.8

5.5.9

5.5.10

5.5.11

5.5.12

5.5.13

SIWAREX FTC

5-51

Name Type Address Default Range of Values / Meaning Reference

Minimum belt loading INT DBB048 Limit value for minimum belt loading in % of
Maximum belt loading INT DBB050 Limit value for maximum belt loading in % of

Dyn. zero setting range INT DBB052 Maximum belt loading with zero setting.
Minimum belt loading

for totalizing
Delay time for
monitoring the belt
loading / flow-rate at
start
Delay time for
monitoring the belt
loading / flow-rate in
operation
Totalizing value in WU

Totalizing value in LWU REAL DBD068 0.1 Numeral step (‚Totalizing value’) f. the

Quantity per pulse 1

Pulse duration 1 f.
Digital output

Minimum pause
duration 1 for digital
output

Quantity per pulse 2

Pulse duration 2 f.
Digital output

Minimum pause
duration 2 for digital
output

Overload-Undercut­Inhibition time

Reserved

102

INT DBW054 Limit value for minimum belt loading in % of

TIME DBD056 Delay time after switching on the belt until

TIME DBB060 Delay time in continuous operation of the belt

REAL

REAL DBD072 0 Indicates, after which quantity increase for

TIME DBD076 0

TIME DBD080 0

REAL DBD084 0 Indicates, after which quantity increase that a

TIME DBD088 0

TIME DBD092 0

TIME DBD096 0 Time delay for the error messages which are

REAL DBW100 0 Reserved

DBD064 0.1 Numeral step (‚Totalizing value’) f. the

the nominal belt loading

the nominal belt loading

the nominal belt loading for totalizing

monitoring the belt loading or flow-rate.

until monitoring of the belt loading or flow­rate.

totalizing memory (Group 1) 1...4 in weight
unit WU

totalizing memory (Group 2) 5...8 in large
weight unit LWU

group 1 that a pulse should be output (when
an external totalizing counter is connected))
Pulse duration 1 for outputting the required
quantity to a digital output (when an external
totalizing counter is connected 1)

(50 ....1000ms)

Minimum pause duration 1 for output of the
required quantity to digital output (when an
external totalizing counter is connected ) 50

....1000ms

pulse should be output. (when an external
totalizing counter is connected 2)
Pulse duration group 2 for the output of the
required quantities to a digital output (when a
totalizing counter is connected)

50 ....1000ms

Minimum pause duration group 2 for output of
the required quantity to a digital output (when
a totalizing counter is connected)

50 ....1000ms

caused by overloading or undercutting the
measuring range

5.5.14

5.5.15

5.5.16

5.5.17

5.5.18

5.5.19

5.5.20

5.5.21

5.5.22

5.5.23

5.5.24

5.5.25

5.5.26

5.5.27

5.5.28

FIGURE 5-7 Defining belt scale parameter parameter

5.5.1 DR 5 – Nominal speed

The nominal speed of the belt corresponds with the speed at nominal
conditions, i.e. at nominal load on the belt. This is output in LU (length
units) per second e.g. 1.7 m/sec.

5.5.2 DR 5 – Time basis for the belt speed

The belt speed is output in LU (length units) per second. The measuring
time of the pulse input can be set to another time e.g. 2 seconds. That

5-52 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

means that the speed value output is updated every 2 seconds, the value
will still be defined in LU per second however.

5.5.3 DR 5 – Pulse constant

The pulse constant of the speed sensor indicates the number of pulses per
LU (length unit) of the belt. SIWAREX FTC calculates the current belt
speed on this basis.

5.5.4 DR 5 – Constant belt speed

Constant speed must be defined if no speed sensor is connected. The
calculation of the flow-rate is then performed using this value.

When a speed sensor is connected, the value must be set to 0.

5.5.5 DR 5 – Minimum belt speed

Minimum belt speed is a limit value for minimum belt speed in % of the
nominal speed. The entry of the number e.g. 800 corresponds with 80.0 %.
After this value has been undercut, SIWAREX FTC sets a status bit (see
scale status...).

5.5.6 DR 5 – Maximum belt speed

Maximum belt speed is a limit value for maximum belt speed in % of the
nominal speed. The entry of the number e.g. 1020 corresponds with 102.0
%. After this value has been exceeded, SIWAREX FTC sets a status bit
(see scale status...).

5.5.7 DR 5 – Reaction time for belt monitoring at start

Monitoring the belt speed is only activated after this delay time when the
belt is started.

5.5.8 DR 5 – Reaction time for belt monitoring in operation

When the minimum belt speed is undercut, the message or status bit is
only activated after this delay time has elapsed.

5.5.9 DR 5 – Nominal flow-rate

Nominal flow-rate in WU (weight units) / sec is defined by the user.
It corresponds with the flow-rate that the belt is equipped for.

5.5.10 DR 5 – Effective belt length

Effective belt length in length units LU. The effective belt length
corresponds with half of the distance between the belt rollers which are
found before and after the roller with the belt scale.

5.5.11 DR 5 – Correction factor for belt loading

A material test can be performed to compare the actual required material
quantity with the total calculated by SIWAREX FTC. A correction factor can
be defined for the calculation of the flow-rate quantity for small deviations.

SIWAREX FTC

5-53

5.5.12 DR 5 – Minimum flow-rate

Minimum flow-rate is a limit value for minimum flow-rates in % of the
nominal flow-rate. The entry of the number e.g. 800 corresponds with 80.0
%. After this value has been undercut, SIWAREX FTC sets a status bit.

5.5.13 DR 5 – Maximum flow-rate

Maximum flow-rate is a limit value for maximum flow-rates in % of the
nominal flow-rate. The entry of the number e.g. 1020 corresponds with

102.0 %. After this value has been exceeded, SIWAREX FTC sets a status
bit.

5.5.14 DR 5 – Minimum belt loading

Minimum belt loading is a limit value for minimum belt loading in % of the
nominal belt loading. The entry of the number e.g. 800 corresponds with

80.0 %. After this value has been undercut, SIWAREX FTC sets a status
bit. In batch mode the totalizing will be completed after the dosing signal is
switched off and the belt loadin is less than this limit value.

5.5.15 DR 5 – Maximum belt loading

Maximum belt loading is a limit value for maximum belt loading in % of the
nominal belt loading. The entry of the number e.g. 1020 corresponds with

102.0 %. After this value has been exceeded, SIWAREX FTC sets a status
bit.

5.5.16 DR 5 – Maximum belt loading for zero setting

Maximum belt loading for zero setting is a limit value for maximum belt
loading in % of the nominal belt loading. Entering the number e.g. 20
corresponds with 2.0 %. After this value has been exceeded, SIWAREX
FTC will not execute the zero setting instruction.

5.5.17 DR 5 - Minimum belt loading for totalizing

Minimum belt loading for totalizing is a limit value for minimum belt loading
in % of the nominal belt loading. Entering the number e.g. 20 corresponds
with 2.0 %. After the actual value is less than the limit, SIWAREX FTC will
not execute the totalizing function.

5.5.18 DR 5 – Delay time for the monitoring of the belt loading after the start

After the belt is switched on, undercutting the minimum belt loading or the
minimum flow-rate is only indicated after this time has elapsed.

5.5.19 DR 5 – Delay time for monitoring the belt loading in continuous operation

After the minimum belt load has been undercut or the minimum flow-rate is
undercut, the respective message or status bit is output only after this time
has elapsed.

5-54 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

5.5.20

DR 5 – Numeral step for totals 1...4

The totalizing memory 1...4 is run with the weight unit indicated in data
record 3. The user can define the smallest step for creating a total with the
numeral step.

E.g. weight unit 1 kg, numeral step for creating the total can be 5 kg.

5.5.21 DR 5 – Numeral step for the totals 4...5

Totalizing memory 4...8 is run with large weight unit indicated in data record

3. The user can define the smallest step for creating a total with the
numeral step.

E.g. Weight unit 1 kg, numeral step for totalizing can be 1 t.

5.5.22 DR 5 – Material quantity per pulse 1

The material quantity per pulse 1 indicates, after which quantity increase of

totalizing memory 1.....4 should output a pulse through the defined digital

output.

5.5.23 DR 5 – Pulse duration 1 for the digital output

For the external quantity counter, the pulse duration can be defined so that
the device can recognize the pulse for sure. The pulse duration is not
permitted to be selected so long that stopping the minimum pause duration
will make the next pulse late.

5.5.24 DR 5 – Minimum pause duration 1 for the digital output

For the external quantity counter, the pulse duration can be defined so that
the device can recognize the pulse for sure. The pulse duration is not
permitted to be selected so long that stopping the minimum pause duration
will make the next pulse late.

5.5.25 DR 5 – Material quantity per pulse 2

The material quantity per pulse 2 indicates, after which quantity increase of

totalizing memory 1.....4 1 should output a pulse through the defined digital

output.

5.5.26 DR 5 – Pulse duration 2 for the digital output

For the external quantity counter, the pulse duration can be defined so that
the device can recognize the pulse for sure. The pulse duration is not
permitted to be selected so long that stopping the minimum pause duration
will make the next pulse late.

5.5.27 DR 5 – Minimum pause duration 2 for the digital output

For the external quantity counter, the pulse duration can be defined so that
the device can recognize the pulse for sure. The pulse duration is not
permitted to be selected so long that stopping the minimum pause duration
will make the next pulse late.

SIWAREX FTC

5-55

5.5.28 DR 5 – Over and under-load inhibition time

When undercutting or exceeding the measurement range, a fault is
indicated. For the defined inhibition time, the fault message is suppressed.
If the status remains for a longer period of time, the fault message is output.

5.6 DR 7 Interfaces

The parameters that define the behavior of the SIWAREX FTC on the interfaces
are defined in DR 7. If an interface is not used the default values can be left alone.

o Change parameter if required.

o Send the DR 7 to the scale

Name Type Address Default Range of Values / Meaning Reference

S7-Interface 0
Reserved BYTE DBB000 0

Source for the weight
simulation

Decade used for
rounding the decimal
places of the process
values
(REAL-weight values)

Reserved

Force service operation BYTE DBB004 0 Bit 0 :

Process value 1 for fast
output to the SIMATIC
CPU

Process value 2 for fast
output to the SIMATIC
CPU

Reserve 2

S7-Alarm
Definition of the process

alarm 0

BYTE DBB001 0 0: Weight simulation inactive

1: Weight simulation value from SIMATIC
2: Weight simulation value from RS232
Other definitions not permitted.

BYTE DBB002 3 0: rounding to 0 decimal places

1: rounding to 1 decimal place
2: rounding to 2 decimal places
3: rounding to 3 decimal places
4: rounding to 4 decimal places
5: rounding to 5 decimal places
6: rounding to 6 decimal places

BYTE DBB003 0 Reserved

0: Outputs in service operation Forced control
impossible
1: Outputs in service operation Forced control is
possible

Bit 1 - 7 not used

BYTE DBB005 2 Various process values are available for selection

after listing.

BYTE DBB006 30 Various process values are available for selection

after listing.

BYTE DBB007 0 Reserve 2

WORD DBW008 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status flag-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

5.6.1

5.6.2

5.6.3

5.6.4

5.6.5

5.6.6

5-56 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Definition of the process
alarm 1

Definition of the process
alarm 2

Definition of the process
alarm 3

Definition of the process
alarm 4

Definition of the process
alarm 5

WORD DBW010 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

WORD DBW012 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

WORD DBW014 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

WORD DBW016 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

WORD DBW018 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

5.6.6

5.6.6

5.6.6

5.6.6

5.6.6

SIWAREX FTC

5-57

Name Type Address Default Range of Values / Meaning Reference

Definition of the process
alarm 6

Definition of the process
alarm 7

S7 - FB Life bit
monitoring time

Analog output 0
Weight for zero point

(0 or 4 mA)

Reference for end value
(20 mA)

Replacement value for
the analogue output at
OD

Source for the analog
output

Current range for the
analogue output

RS232 0
RS232-printer baud rate

WORD DBW020 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

WORD DBW022 0 Value 0 - No process alarm generation

Value range 1 – 0FFh
Number of the technical error

Value range 100h – 13Fh
100h+ 0...1Fh Bit-No. NAWI-status bit - coming
100h+ 20h...3Fh Bit-No. Conti status bit-coming

Value range 200h – 23Fh
200h+ 0...1Fh Bit-No. NAWI status bit - going
200h+ 20h...3Fh Bit-Nr. Conti status bit-going

TIME DBD024 0 0 = S7- Life bit monitor switched off

1 to n = Monitoring time [msec]

REAL DBD028 0 Value output with the 0 or 4 mA

REAL DBD032 0 Value output with the 20 mA.

REAL DBD036 0 Replacement value which is output with an active

OD signal if the parameters are defined
respectively

BYTE DBB040 0 0 = Control signals-SIMATIC

1 = ext. default value through DR 17
2 = Gross
3 = Net
4 = Belt speed
5 = Flow rate 1
6 = Belt load Other definitions not allowed
7 = Actuation signal PID controller

BYTE DBB041 0 Bit 0:

0: 0 .. 20mA
1: 4 .. 20mA

Bit 1 – 7 unused

BYTE DBB042 3 0 = 1200 Bit/sec.

1 = 2400 Bit/sec.
2 = 4800 Bit/s
3 = 9600 Bit/s
Other definitions not permitted.

5.6.6

5.6.6

5.6.7

5.6.8

5.6.9

5.6.10

5.6.11

5.6.12

5.6.13

5-58 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

RS232- XON/XOFF for
printer

RS232- RTS/CTS for
printer

RS485 0
Log selection

Decimal place for the
remote display

RS485-Baudrate

RS485-character parity

RS485- Data bits

RS485-Stop-Bits

Digital outputs 0
Definition of digital output

1

Definition of the digital
output 2

Definition of the digital
output 3

Definition of the digital
output 4

BYTE DBB043 1

0

0

BYTE DBB044 0 0: no protocol

BYTE DBB045 0 0 to 4

BYTE DBB046 3 0 = 1200 Bit/sec.

BYTE DBB047 0

1

0

BYTE DBB048 0FFh Value range 00h – 3Fh

BYTE DBB049 0FFh Value range 00h – 3Fh

BYTE DBB050 0FFh Value range 00h – 3Fh

BYTE DBB051 0FFh Value range 00h – 3Fh

Bit 0:
0: XON/XOFF transmission control OFF
1: XON/XOFF transmission control ON

Bit 1:
0: CTS/RTS transmission control OFF
1: CTS/RTS transmission control ON

Bit 2: reserved, must always be 0

Bit 3 – 7 unused

1: SIEBERT- Protocol S11
2: ASCII protocol
3: SIEBERT- Protocol S102 (6-position)

Other definitions not permitted.

1 = 2400 Bit/sec.
2 = 4800 Bit/s
3 = 9600 Bit/s
4 = 19200 Bit/s
Other definitions not permitted.
Bit 0:
0: even
1: odd

Bit 1:
0: 7 data bits
1: 8 data bits

Bit 2:
0: 1 stop bit
1: 2 stop bit

Bit 3 – 7 not used

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

41h....Pulse output Integration Distribution mem.1

42h... Pulse output Integration Distribution mem.5

FFh output always inactive

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

5.6.14

5.6.15

5.6.16

5.6.17

5.6.18

5.6.19

5.6.19

5.6.19

5.6.19

SIWAREX FTC

5-59

Name Type Address Default Range of Values / Meaning Reference

Definition of the digital
output 5

Definition of the digital
output 6

Definition of the digital
output 7

Definition of the digital
output 8

Level definition for digital

outputs 1....8

Replacement values for

digital outputs 1 .... 8

upon fault or OD signal

Activate - Digital output
replacement values for
operational faults

Reserve 3

Digital inputs 0
Definition of digital input 1 BYTE DBB060 0 0 = No command

Definition of the digital
input 2

Definition of the digital
input 3

Definition of the digital
input 4

Definition of the digital
input 5

Definition of the digital
input 6

Definition of the digital
input 7

Level definition for digital
inputs 1...7

Reserved

BYTE DBB052 0FFh Value range 00h – 3Fh

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

BYTE DBB053 0FFh Value range 00h – 3Fh

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

BYTE DBB054 0FFh Value range 00h – 3Fh

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

BYTE DBB055 0FFh Value range 00h – 3Fh

0...1Fh Bit-No. NAWI status flag
20h...3Fh Bit-No. Conti status flag

FFh output always inactive

BYTE DBB056 0 Bit 0: DO1 -> 0 = high active: 1 = low active

....

Bit 7: DO8 -> 0 = high active: 1 = low active

BYTE DBB057 0 Bit 0: Replacement value digital output 1

....

Bit 7: Replacement value digital output 8

BYTE DBB058 0 Bit 0:

0: Replacement value output for operating error
deactivated
1: Replacement value for operating error
activated

Bit 1 - 7 not used

BYTE DBB059 0 Reserve 3

1- 254 = Command code

BYTE DBB061 0 0 = No command

1- 254 = Command code

BYTE DBB062 0 0 = No command

1- 254 = Command code

BYTE DBB063 0 0 = No command

1- 254 = Command code

BYTE DBB064 0 0 = No command

1- 254 = Command code

BYTE DBB065 0 0 = No command

1- 254 = Command code

BYTE DBB066 0 0 = No command

1- 254 = Command code

BYTE DBB067 0 Bit 0: Digital input 1 -> 0 = high active: 1 = low

active

....

Bit 6: Digital input 7 -> 0 = high active: 1 = low
active
Bit 7: Not used

TIME DBD068 0 Reserved

5.6.19

5.6.19

5.6.19

5.6.19

5.6.20

5.6.21

5.6.22

5.6.23

5.6.23

5.6.23

5.6.23

5.6.23

5.6.23

5.6.23

5.6.24

5-60 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Reserve 4

MMC Parameter 0
Log overflow

Trace overflow

Memory for trace

Memory segment for
trace function

Memory segment for logs

Trace function Recording
cycle

80

DWORD DBB072 0 Reserve 4

BYTE DBB076 1

1

0

BYTE DBB077 50 Up to 100% but the total for trace function and log

BYTE DBB078 50 Up to 100% but the total for trace function and log

BYTE DBB079 1 1...n x 10 msec

Bit 0:
0: with full memory, the logging procedure is
stopped
1: with full memory, the oldest
entries are overwritten

Bit 1:
0: No overwriting of trace data is possible
1: the oldest trace data is overwritten with full
card

Bit 2:
0: Trace data is stored in RAM
1: Trace data is stored in the MMC

Bit 3 – 7 not used

may not exceed 100%

may not exceed 100%

5.6.25

5.6.26

5.6.27

5.6.28

Table 5-4 Allocation of DR 7

5.6.1 DR 7 - Source for the Weight Simulation

Instead of the

actual weight determination, a weight simulation can be activated for
test purposes. The simulated weight value can be defined through the SIMATIC
interface or through the RS232 interface (SIWATOOL FTC). The weight simulation
makes commissioning the scale much easier in certain situations.

5.6.2 DR 7 - Decade for Rounding the Decimal Places for the Process Values

This pa

rameter can be used to define to how many decimal places that the
(weight) process values should be rounded. This entry decouples the display of
weight values which trigger the restrictions of the calibration requirements from the
values that are used in the control software.

5.6.3 DR 7 - Force in Service Operation

After activating this functio

n, the digital outputs can be forced independent of their
parameter definitions. Force control is only possible in service operation and only
with the SIMATIC interface.

SIWAREX FTC

5-61

!

Warning notice

Before using this function, you must ensure that the system will not reach any
hazardous status caused by the forced control of the digital outputs of the
SIWAREX FTC.

5.6.4 DR 7 - Process Value 1 for Fast Output to the SIMATIC CPU

The cu
SIMATIC CPU using function block FB43. Transferring a large data record can last
for several CPU cycles and puts a load on system performance.

If a process value should be transferred very quickly to the SIMATIC CPU
immediately after its origination in the SIWAREX FTC, the peripheral interface of
the SIWAREX FTC exists. The data is read by the FB43 cyclically and provided for
the user as an output variable. In the belt scale operating mode, normally the
current belt load (selection code 45) is of some importance. Selection is from the
list See:

5.6.5 DR 7 - Process Value 2 for Fast Output to the SIMATIC CPU

Process valu
Normally the current Conti status (selection code 30) is of interest in the loss-in­weight scale operating mode.

rrent process values can be read as data packages (data records) in the

Table 5-21 Process values for allocating log fields.

e 2 can be defined just the same as process value 1 (see above).

5.6.6 DR 7 - Definition of the Process Alarms 0, 1, 2, 3, 4, 5, 6, 7

The process
generate process alarms in the SIMATIC CPU. The control program can react
immediately to an event this way. Defining a process alarm is explained with the
example of process alarm 0. The explanation also applies to process alarms 1 to 7.

If parameter value 0 is defined for process alarm 0 then no process alarms are
generated.

By entering a value unequal to zero, a process alarm is allocated according to the
following procedures:

Value range 1 to 255
Number of the technology message. If the defined technology error occurs then

process alarm 0 is generated.
Value range 256 to 319
Number of the bit from the NAWI- or Conti status (see DR 30). If the defined status

occurs then process alarm 0 is generated.
256+ 0... 31 Bit-No. NAWI status bit coming
288+ 0... 31 Bit-No. Conti status bit coming
Value range 512 to 575
Number of the bit from the NAWI- or Conti status (see DR 30). If the defined status

goes then process alarm 0 is generated.
512+ 0... 31 Bit-No. NAWI status bit going
544+ 0... 31 Bit-No. Conti status bit going

alarms can be defined with this parameter. The module group can

5-62 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

5.6.7

DR 7 - S7-FB-Life Bit Monitoring Time

The SIWARE

X FTC can determine whether the FB is maintaining the
communication with the SIMATIC CPU by monitoring the life bit. If the FB does not
respond, an operating error is output after the defined time has elapsed. Monitoring
is active in RUN status of the SIMATIC_CPU.

5.6.8 DR 7 – Input Value for the Adjustment Zero (0 or 4 mA)

A weight for the ran

ge start can be defined when defining the range parameters for

the analogue output.

5.6.9 DR 7 - Input Value for the End Value (20 mA)

n defining the parameters for the range for the analog output, a weight can be

Whe
defined for the range end.

5.6.10 DR 7 - Replacement Value for the Analog Output with OD

A weight ca

n be defined for the analogue output, for which a corresponding signal

is output if the OD signal (Output Disable) exists.

Normally this corresponds with the SIMATIC CPU status - STOP.

5.6.11 DR 7 - Source for the Analog Output

The so

urce for the analogue output can be defined with this parameter. The weight
values from the defined source are output as current signals corresponding with
the parameter definitions for start and end ranges.

The following sources are available:

0 - Control value form the SIMATIC (FB)

1 - Default value from the DR 17

2 - Gross weight

3 - Net weight

4 - Belt speed

5 - Flow rate 1

6 - Belt load

7 - Actuation signal from PID controller

5.6.12 DR 7 - Current Range for the Analog Output

The anal

og output can be operated with a current range 0... 20 mA or 4... 20 mA.

SIWAREX FTC

5-63

5.6.13 DR 7 - RS232 Printer Baudrate

If a printer is connected to the RS232 interface, the following baud rates can be
defined.

1200 Bit/sec

2400 Bit/sec

4800 Bit/sec

9600 bps

5.6.14 DR 7 - RS232 Transmission Control for Printer

The tran
follows:

XON/XOFF (for printer protocol only)

RTS/CTS (for printer protocol only)

5.6.15 DR 7 – Protocol Selection for RS 485

The followi

- 0: No protocol

5.6.16 DR 7 - Decimal Place for the Remote Display

sfer control parameters for the RS232 interfaces can be defined as

0: XON/XOFF transmission control OFF

1: XON/XOFF transmission control ON

0: CTS/RTS transmission control OFF

1: CTS/RTS transmission control ON

ng protocols can be set for the RS485 interface

1: SIEBERT- Protocol S11
2: ASCII protocol
3: SIEBERT- Protocol S102 (6-position)

If a display from the Siebe
the decimal place for the display of non-verifiable process values can be defined.

5.6.17 DR 7 – RS 485 Baudrate

The followi

0 = 1200 Bit/sec.

1 = 2400 Bit/sec.

2 = 4800 Bit/s

3 = 9600 Bit/s

4 = 19200 Bit/s

5-64 SIWAREX FTC

ng protocols can be set for the RS485 interface:

rt company is connected to the RS 485 interface,

WEIGHING FUNCTIONS AND PARAMETERS

5.6.18

DR 7 - RS485 Character Frame

Parity:

0: even

1: odd

Numb

er of data bits

0: 7 data bits

1: 8 data bits

Number of stop bits:

0: 1 Stop bit

1: 2 Stop bits

5.6.19 DR 7 - Definition of the Digital Outputs 1, 2, 3, 4, 5, 6, 7, 8

The definition

of the digital outputs can be defined with this parameter. Assigning a
bit from the pool of status bits for the scale causes the output to be active (active
can be signal level 0 or 1 - see below) if the bit is set.

When assigning a number between 0 and 63, the digital output is assigned to a
status bit of the scale and when assigning a number > 63, the output remains
inactive.

0... 31 Bit-No. NAWI status flag

31 + 0... 31 Bit-No. Conti status flag

253 Start MW transmission digital LC

254 Stop MW transmission digital LC

255 Output always inactive

Other values not allowed

5.6.20 DR 7 - Level Definition for Digital Outputs 1 to 8

After assi

gning the definitions for digital outputs to a status bit, the signal that the

output should have when it is active can be determined.

E.g. Digital output 1 (DO1) is determined with bit 0:

If bit 0 is 0 then DO1 is high active and if bit 0 is 1 then DO1 is low active,

If bit 1 is 0 then DO2 is high active and if bit 1 is 1 then DO2 is low active,

etc.

SIWAREX FTC

5-65

5.6.21 DR 7 - Replacement Values for DO 1 to 8 with Fault or Output Disable

Normally, the outputs are reset with a SIMATIC CPU STOP. This behavior
corresponds with the default setting.

If it makes sense to set an output with a SIMATIC CPU STOP, you can define it
with this parameter.

E.g. Digital output 1 (DO1) is determined with bit 0:

If bit 0 is 0 then DO1 is also 0 with OD signal.

If bit 0 is 1 then DO1 is 1 with OD signal.

The digital output 1 (DO2) is determined with bit 1:

If bit 1 is 0 then DO2 is also 0 with OD signal.

If bit 1 is 1 then DO2 is 1 with OD signal.

etc.

!

Warning notice

If an output is to be set with the SIMATIC CPU STOP then you must ensure that it
does not lead to a hazardous situation.

5.6.22 DR 7 - Replacement Values for Digital Outputs with Operating Error

Normally, the outputs a
error). This behavior corresponds with the default setting.

If it makes sense to set an output with a fault, you can define it with this parameter.

E.g. Digital output 1 (DO1) is determined with bit 0:

If bit 0 is 0 then DO1 is also 0 with fault.

If bit 0 is 1 then DO1 is 1 with fault.

The digital output 1 (DO2) is determined with bit 1:

If bit 1 is 0 then DO2 is also 0 with fault.

If bit 1 is 1 then DO2 is 1 with fault.

etc.

re reset when there is a module group fault (operating

Warning

If an output is to be set with the fault (operating error) then you must ensure that it
does not lead to a hazardous situation.

5-66 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

DR 7 - Definition of Digital Inputs 0, 1, 2, 3, 4, 5, 6, 7

5.6.23

The definition
happen by allocating an instruction.

Commands:

If the signal 1 appears at the defined input then the assigned command is
executed. To allocate and instruction to an input, its instruction number (1 to 255)
must be entered (see Command List). By entering 0, the input is assigned as

sed.

unu

5.6.24 DR 7 - Level Definition for Digital Inputs 1 to 7

After assi
you can define which signal that the should be interpreted as active on the input.

E.g. Digital input 1 (DI1) is determined with bit 0:

If bit 0 is 0 then DI1 is high active and if bit 0 is 1 then DI1 is low active,

If bit 1 is 0 then DI2 is high active and if bit 1 is 1 then DI2 is low active,

etc.

5.6.25 DR 7 - MMC Log Overflow, MMC Trace Overflow, Target Memory for Trace Function

Bit 0 is used f
MMC memory when the memory is full.

of the digital inputs can be defined with this parameter. This can

gning the definition for digital inputs to a command or a step-on condition,

or defining how the logging should be performed in the verifiable

0: with full memory, the logging procedure is stopped

1: with full memory, the oldest entries are overwritten

Bit 1 is used for defining how the logging of trace data should continue if memory is
full.

0: No overwriting of trace data is possible with full MMC memory

1: The oldest trace data is overwritten with full MMC memory

The trace function is described in

Bit 2 defines which memory is used for recording the trace data.

0: Trace data is stored in RAM

1: Trace data is stored in the MMC

The trace function is described in

5.6.28

5.6.28

SIWAREX FTC

5-67

5.6.26 DR 7 - Memory Segment for Trace Function

The MMC memory can be used for recording the trace data and for recording the
verifiable scale logs.

The percentage of MMC memory that is available for the trace function is defined
with this parameter.

Up to 100% is permitted in this definition but the total for trace function and
verifiable log may not exceed 100%

The trace function is described in

5.6.27 DR 7 - Memory Segment for Log

The MM
verifiable scale logs.

The percentage of MMC memory that is available for the verifiable logs is defined
with this parameter.

Up to 100% is permitted in this definition but the total for trace function and
verifiable log may not exceed 100%

The trace function is described in

5.6.28 DR 7 - Trace Function Recording Cycle

Every n-th measure
is possible and when recording to MMC, n  5 is possible.

The recording can be started with the "Start Recording" 70 command and stopped
with "End recording" 71 command.

A recording element has a length of 64 bytes and contains several measurement
values and status bits (

The values that are recorded can be read with the SIWATOOL FTC and can then
be exported into MS EXCEL.

C memory can be used for recording the trace data and for recording the

ment (n x 10 msec) is recorded. When recording to RAM, n  1

see Table 5-26 Combination of recording elements).

5.6.28

5.6.28

If the trace function is defined as recording into cyclic memory then it can be used
to construct a status recorder. The command for starting the recording can come
from the SIMATIC control program and the command for stopping can also come
from the control program, e.g. if you want to record and save the progress of a
procedure.

5.7 DR 8 Date / Time

SIWAREX FTC has its own hardware clock. The actual date and time can be read
through DR 8. The date and time can be set on the module group using this data
record if required.

Procedures:

o Setting the date and time.

o Send the DR 8 to the scale

5-68 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Date / Time
Date / Time

4

DATE_AN
D_TIME,
DT

DBD000 01.01.01

00:00:00
000 Mo

Date&Time in SIMATIC-Format

Table 5-5 Allocation of DR 8

5.8 DR 9 Info on Module

No entries can be made in DR 9. The data record uses the information on the inner
life of the module.

Name Type Address Default Range of Values / Meaning Reference

Info on module
CRC Checksum

Length of firmware in
bytes

Product Info

Module name

Application

File name

Version recognition

Function status

Data structure version

Correction status

Creation date

Creation time

DWORD DBW000 0 -

DWORD DBW004 0 -

STRING
[26]
STRING
[10]
STRING
[4][8]

STRING
[20]
BYTE
[4]

STRING
[10]
STRING
[8]

DBB008 0 Siemens AG Serial number of the module

DBB036 SIWAREX

DBB048

DBB082 0

DBB104 0 Byte 0 (ASCII)

DBB108 0

DBB120 0

XX
„CONT“
„NAWI“
„xxxx“
„xxxx“
„xxxx“
„xxxx“
„xxxx“

xxx“

„x

Application identification

Before delivery approval
B = Laboratory status
P = Pilot
R = Release
S = Special status
After delivery approval
V = Version
K = Correction status

Byte 1 function status xx (important function
changes or technical changes for the calibration
0 ... 99)

Byte 2 Version DR structure yy (indicates
changes in the data record structure) 0 ... 99

Byte 3 correction status zz (small changes or
error clean-up) 0 ... 99

SIWAREX FTC

5-69

Name Type Address Default Range of Values / Meaning Reference

Boot loader version

Scale type

Reserved WORD DBW138 0 Reserved
140

Table 5-6 Allocation of DR 9

5.8.1 DR 9 - Info on Module

WORD DBW130 0

STRING
[4]

DBB132 „CONT„

or
„NAWI“

The inform

ation on the SIWAREX FTC module is for the purpose of identifying the
module in the manufacturer's plant (e.g. for repairs). This information has no
influence on user operation.

5.9 DR 14 Tilt angle

DR 14 is used for an external definition of the tilt angle for the belt scale.
Procedure:

o Enter tilt angle
o Send DR 14 to the scale

Name Type Address Default Range of Values / Meaning Reference

Tare entry
Tilt angle entry

2

Table 5-7 Allocation of DR 14

5.9.1 DR 14 – Tilt angle definition for the belt

DR 14 is used for an external definition of the belt tilt angle. If the belt is
mounted horizontally, the definition is 0. The belt can be tilted to a
maximum of 60°.

INT DBB000 0 Definition for the belt tilt 0° to 60° (0...600)

5.9.1

Always ensure that the definition corresponds with the current tilt angle,
otherwise the belt load will be calculated incorrectly.

5.10 DR 15 Tare Entry

DR 15 is used for external specification of the tare weight.

Procedures:

o Enter tare weight

o Send the DR 15 to the scale

o Activate the command "Accept tare entry (24)"

5-70 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Tare entry
Tare entry

4

REAL DBD000 0 External tare entry (Preset Tare).

5.10.1

Table 5-8 Allocation of DR 15

5.10.1 DR 15 - Tare Entry

5 is used for external specification of the tare weight. Once specified with

DR 1
DR 15, the tare value is not yet activated. The transfer to tare memory of the
SIWAREX FTC is then performed with instruction „Accept tare entry“
(see command code

24).

5.11 DR 16 Weight simulation entry

If the DR 16 was defined as the source for the weight simulation (see DR 7 Source

for the weight

the measurement input of the SIWAREX FTC and the defined value is "simulated"
as the weight value.

simulation), defining a weight value through DR 16 will deactivate

Procedures:

o Check in DR 7, whether DR 16 has been defined as the source for the weight

simulation

o Enter a value to be simulated

o Send the DR 16 to the scale

Name Type Address Default Range of Values / Meaning Reference

Simulation
Weight simulation entry REAL DBD000 0 Default value for weight simulation (is used

instead of the gross weight e.g. for test)

4

5.11.1

Table 5-9 Allocation of DR 16

5.11.1 DR 16 - Weight Simulation Definition

If the DR 16 wa

for the weight

s defined as the source for the weight simulation (see DR 7

Source

simulation), defining a weight value through DR 16 will deactivate
the measurement input of the SIWAREX FTC and the defined value is "simulated"
as the weight value. This way, plant components (including filter settings) can be
tested even though the scale is not set up yet.

5.12 DR 17 Analog Output Control

If DR 17 has been defined as the source for the analogue output (see DR 7

Source for the analog output) then sending a weight value will output a

corresponding output stream on the analogue output.

Procedures:

o Check in DR 7, whether DR 17 was defined as the source for the analog output.

o Check the parameter definitions of the analog output (see DR 7

SIWAREX FTC

zero point

5-71

Weight for

and following parameters).

o Enter a value in DR 17

o Send DR 17 to the scale

Name Type Address Default Range of Values / Meaning Reference

Analog output
Ext. definition for analog
output

4

Table 5-10 Allocation of DR 17

5.12.1 DR 17 - Ext. Definition for Analog Output

REAL DBD000 0 Analogue output control with a default value.

5.12.1

If the DR 17 has b
(see DR 7

DR 7 - Source for the ) then the analogue output is controlled with the

een defined as the source for controlling the analogue output

defined value with a definition of a weight value on DR 17. This way, the analogue
output can be set continuously from the SIMATIC control program.

5.13 DR 18 Control Display for Non-automatic Weighing Instrument

A value can be preset using DR 18 and this value can be displayed on the external
display. This way, the external display (Siebert) can be used for displaying any
value that is calculated in SIMATIC. The display can only be used in operating
mode "Non-automatic weighing instrument".

Procedures:

o Enter a value in DR 18

o Send the DR 18 to the scale

Name Type Address Default Range of Values / Meaning Reference

Display
Ext. definition for remote
display

4

Table 5-11 Allocation of DR 18

REAL DBD000 0 Remote display control (Siebert S102) with a

default value

5.14 DR 21 Parameter for batch operation

In batch operation, the entire quantity of the material to be loaded is loaded.
The scale runs the loading according to the predefined total quantity.
Procedures:

o Define set weight
o Send DR 21 to the scale

Name Type Address Default Range of Values / Meaning Reference

Load set value

5-72 SIWAREX FTC

REAL DBD000 0 Quantity to be dosed in batch operation

in reference to WU,
Switch off in reference with totalizing memory 1

5.14.1

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Default Range of Values / Meaning Reference

Maximum loading time

Trailing weight REAL DBD008 0 Quantity that still must be dosed after reaching

Reserve_21_12

Log selection BYTE DBB016 0 0: No automatic logging

Reserve_21_17

18

TIME DBD004 0 0: deactivated

REAL DBD012 0 Reserved

BYTE DBB017 0 Reserved

If 0, the continuous operation

>100: time f. Monitoring the maximum loading
time.

the set value

performed
1: autom. logging with text 1
2: autom. logging with text 2
3: autom. logging with text 3
4: autom. logging with text 4

5.14.2

5.14.3

5.14.4

Table 5-12 Allocation of DR 21

5.14.1 DR 21 – Loading quantity

The total quantity for loading operation can be set using this parameter.
The belt is stopped when the total quantity is achieved in totalizing memory
1 and the totalizing is ended. For loading the predefined quantity again,
totalizing memory 1 must be deleted.

5.14.2 DR 21 – Maximum loading time

The maximum loading time is started as well when loading is started. If the
total quantity is not achieved before this time has elapsed, SIWAREX FTC
sends out a technology message.

5.14.3 DR 21 – Trailing weight

The trailing weight is the material quantity that must be weighed in addition
after the set value has been reached..

5.14.4 DR 21 – Log Selection

After the total quantity has been reached, a log can be created
automatically. One of four log text messages can be defined with this
parameter.

5.15 DR 30 Process Status 1 (NAWI, Force measurement, Belt scale)

The process values and the expanded process values can be used to monitor the
current states and data in the non-automatic weighing instrument. Observing the
selected data is very helpful in test operation for optimizing parameters. The status
can also be monitored if the SIWAREX FTC is controlled by the SIMATIC CPU.

The NAWI- and Conti-status flags are simultaneously updated in DR 32 as well ­process status loss-in-weight scale.

Name Type Address Range of Values / Meaning Reference
NAWI status flags DINT DBD000 Status bits (see below)

SIWAREX FTC

5-73

5.15.1

Name Type Address Range of Values / Meaning Reference
Conti-Status flags DINT DBD004 Status bits (see below)

Gross process value REAL DBD008 Gross weight
Net process value REAL DBD012 Net weight
Tare process value REAL DBD016 Tare weight
G/N weight

B/N weight_x10

Tare weight

Belt speed REAL DBD032 Current speed [LU/s]

Belt speed in %

Belt load in % INT DBW038 Belt load in relation with the nominal belt load

Nominal belt load

Belt load REAL DBD044 Current belt load [WU/LU]
Flowrate 1 REAL DBD048 Flowrate 1 [WU./s]
Flowrate 2 REAL DBD052 Flowrate 2 [WU/h]
Flowrate 3 REAL DBD056 Flowrate 3 [LWU/h]
Flowrate in % INT DBW060 In reference to the nominal flowrate
Operating hours counter

Pulse counter value DINT DBD064 Pulse counter value in reference to the set

68

REAL DBD020 Verifiable B/N weight value for display and

REAL DBD024 Verifiable B/N weight value with 10 fold

REAL DBD028 Verifiable tare weight value for display and

INT

REAL

INT DBW062 (is not reset, begins after overflow at 0)

DBW036

DBD040

logging purposes (Basis for DR ASCII weight
value)

resolution (Basis for DR ASCII weight value)

logging purposes

Belt speed in % related to the nominal speed

Nominal belt load [WU/LU] calculated from
nominal flowrate and nominal speed

measuring time

5.15.2

5.15.3

5.15.4

5.15.5

5.15.6

5.15.7

5.15.8

5.15.9

5.15.10

5.15.11

5.15.12

5.15.13

5.15.14

5.15.15

5.15.16

5.15.17

5.15.18

5.15.19

Table 5-13 Allocation of DR 30

5.15.1 DR 30 - NAWI Status Bits

Bit No. Name Range of Values / Meaning Reference

0 WR1 Weight within weighing range 1
1 WR2 Weight is in weighing range 2
2 WR3 Weight is in weighing range 3
3 Limit 1 Limit value 1 activated
4 Limit 2 Limit value 2 activated
5 Limit 3 Limit value 3 activated
6 Tared (NET) Set if the scale is tared
7 Preset Tare Set if the scale was tared with tare input
8 Max+9e Set if maximum load is exceeded by 9 e
9 ¼d zero Set if the weight does not exceed ¼ d

10 Waiting for stand-still Set if the scale waits for a stand-still after the weighing

11 Standstill Standstill exists
12 Scale adjusted Set if the scale is adjusted (calibrated)

13 Error on DI
14 Simulation active Set if the weight simulation has been activated
15 Service operation active Set if service operation has been activated
16 Printing log The log is being printed.
17 RS232-Print not possible The log cannot be printed.
18 MMC inserted The MMC is in position
19 MMC ready The MMC is formatted and ready for recording
20 MMC-trace ready The MMC is ready for the trace function
21 MMC-log ready The MMC is ready for logging
22 Trace active The trace function is activated

start.

Set if a command could not be executed on a digital input

5-74 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Bit No. Name Range of Values / Meaning Reference

23 Reserved Reserved
24 Reserved Reserved
25 Empty message Scale in empty range
26 Calibration data protection The switch for protecting the calibration data is switched on
27 Reserved Reserved
28 Reserved Reserved
29 Reserved Reserved
30 Standalone operation

activated

31 Operating error At least one operating error (fault) exists

1, if standalone operation has been activated

Table 5-14 DR 30 - NAWI status bits

5.15.2 DR 30 - Conti-Status Flags

Bit No. Name Range of Values / Meaning Reference

0 Belt control status

1 Totalizing status

2 Min. belt loading exceeded Belt loading min has been exceeded (is returned with a

3 Belt loading max. exceeded Belt max has been exceeded (is indicated with a delay in

4 Min. belt speed exceeded Min. belt speed exceeded (returned with a delay in cases)
5 Max. belt speed exceeded Max. belt speed exceeded (is indicated with a delay in

6 Min. pulse undercut

7 Min. belt load exceeded for

totalizing

8 Scale in dynamic zero

setting range

9 Dynamic adjustment or zero

setting procedure is running

10 Dyn. zero setting aborted 1: If dynamic zero setting could not be completed or was

11 Volumetric operation Volumetric operation in automatic mode.

Filling Filling activated.

12

> max. flow rate +/- Change speed of flow rate too great

13
14 > min. flow rate Minimum flow rate achieved
15 > max. flow rate Maximum flow rate exceeded (in relation to the nominal

Pulse 1 external Pulses f. external summator 1

16

Pulse 2 external Pulses f. External summator 2

17

Gravimetric operation Gravimetric mode in automatic operation.

18

Emptying activated The command for emptying was activated. Scale will not

19

Max. control difference Maximum control difference exists.

20

Reserved Reserved

21
22 Max. filling time The maximum filling time has been achieved.
23 Max. time max. control

difference

24 Max. vol. time The volumetric mode is active longer than the defined

25 Reserved Reserved

0: Belt control OFF
1: Belt control ON
1: Recording and totalizing of the dosing quantity is active
0: Dosing quantity will not be recorded

delay in cases)

cases)

cases)
1 = Pulse encoder generates less than 2 pulses / second
0 = Pulse encoder generates a minimum of 2 pulses /
second
1= Min. belt load exceeded for totalizing, the totalizing can
be performed
=1, if the scale is in the dynamic zero setting range

=1, if dynamic adjustment or zero setting procedure is
running

ended early because of leaving the zero setting range

flow rate or setpoint)

refill, the container will empty until the limit value "Empty
range"from DR 4.

The maximum control difference is at the max. defined
monitoring time.

max. monitoring time.

SIWAREX FTC

5-75

Bit No. Name Range of Values / Meaning Reference

26 Status change Status change running. The information is set with the

following events:

- Start-up in volumetric operation

- Setpoint change in volumetric operation

- Switch to grav. operation. For the time of the monitoring
delay (DR 12)

- defined switch to volumetr. operation upon flow rate fault
27 Reserved Reserved
28 Dosing active Switch on material discharge organ
29 Loading active Loading (belt scale) is activated.
30 Loading complete Loading (belt scale) is complete.
31 Reserved Reserved

Table 5-15 DR 30 - Conti-Status flags

5.15.3 DR 30 - Gross Process Value

The cu

rrent gross weight value. Dimension: Weight Unit [WU].

5.15.4 DR 30 - Net Process Value

The cu

rrent net weight value. Dimension: Weight Unit [WU].

5.15.5 DR 30 - Tare Process Value

The cu

rrent tare weight value. Dimension: Weight Unit [WU].

5.15.6 DR 30 - G/N Weight

The momentary weight value whi
Weight Unit [WU].

5.15.7 DR 30 - G/N Weight_x10

The momentary weight value in increased resolution whi
main display. Dimension: Weight Unit [WU].

5.15.8 DR 30 - Tare

e current weight value tare (numeral step from DR 3). Dimension: Weight Unit [WU].

Th

5.15.9 DR 30 – Belt Speed

The cu

rrent belt speed defined in length units (e.g. m) per second.

ch will be used for the main display. Dimension:

ch will be used for the

5.15.10 DR 30 – Belt Speed in % of the Nominal Speed

The cu

rrent belt speed in % of the predefined nominal speed.

5.15.11 DR 30 – Belt Loading in % of the Nominal Load

The cu

rrent belt load is output as the relationship of the current belt load to the

nominal belt load.

5-76 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

5.15.12

DR 30 - Nominal Load

From the n

ominal flowrate (defined in DR 5) and nominal speed (defined in DR 5)

calculated nominal belt load in the dimension weight unit/length unit [WU/LU].

5.15.13 DR 30 - Belt Load

The cu

rrent belt load is output as the relationship of the currently measured weight

to the effective belt length. The dimension is: Weight unit/Length unit [WU/LU].

5.15.14 DR 30 – Flowrate 1

The cu

rrent flowrate 1 is output in the dimension Weight unit / sec [WU/s].

5.15.15 DR 30 – Flowrate 2

The cu

rrent flowrate 2 is output in the dimension Weight unit/h [WU/h].

5.15.16 DR 30 – Flowrate 3

The cu

rrent flowrate 3 is output in the dimension Large Weight Unit / h [LWU/h].

5.15.17 DR 30 – Flowrate in % of the Nominal Flowrate

The cu

rrent flowrate is output in % of the nominal flowrate.

5.15.18 DR 30 – Operating Hours Counter

The ope

rating hours counter records the number of hours that the SIWAREX FTC

is supplied with 24V voltage.

5.15.19 DR 30 – Pulse Counter Value

nt counter value on the pulse input in relation to the defined measurement

Curre
time.

5.16 DR 31 Process Status 2 (all operating modes)

The user or the service technician can retrieve information on the current status of
the scale in the expanded process values.

Name Type Address Range of Values / Meaning Reference
Unfiltered digital value

Filtered digital value

Reserve33_1

Operating error

curr. Date/Time

Current temperature

DINT DBD000 Unfiltered digital value from ADU

DINT DBD004 Filtered digital value from filter level 1 for

DINT DBD008 Reserved

DWORD

DATE_A

ND_TIME

INT DBW024 Current inner-temperature of the module

DBD012

DBD016 curr. Date/Time

NAWI-Fct.

Error word Operating error (for test dept.,
Bit-No. = Error code –1)

[0.1°C]. If no temperature value is available: -

100.0°C.

5.16.1

5.16.2

5.16.3

5.16.4

5.16.5

SIWAREX FTC

5-77

Name Type Address Range of Values / Meaning Reference
DE status

Reserve_31_27

Impedance reference
value

Impedance value

32

Table 5-16 Allocation of DR 32

5.16.1 DR 31 – Unfiltered Digital Value

BYTE DBB026

BYTE DBB027

INT

INT

DBW028

DBW030

Current status of the digital inputs (without
pulse input)

Reserve 1

Impedance reference value [0.1]

Impedance actual value [0.1]

5.16.6

5.16.7

5.16.8

The cu

rrent number of digits from the AD converter is output without being filtered.

5.16.2 DR 31 – Unfiltered Digital Value

The cu

rrent number of digits from the AD converter is output after the filtering.

5.16.3 DR 31 – Operating Error

The cu

rrent existing operating errors (fault) are output as double word.

5.16.4 DR 31 – Date Time

The cu

rrent date and time from the internal clock of the SIWAREX FTC.

5.16.5 DR 31 – Max. Temperature

The maximu

m occurring module temperature (slave pointer).

5.16.6 DR 31 – Status of Digital Inputs

The current si

gnal level on the digital inputs 1...6. The status of the input for the

pulse counter is not indicated.

5.16.7 DR 31 - Impedance Reference Value

The total re

sistance of the load cell(s) which is measured upon commissioning.

Measurement is initiated with an instruction.

5.16.8 DR 31 – Impedance Actual Value

nt measures total resistance of the load cell(s). Measurement is initiated with

Curre
an instruction.

5.17 DR 33 Distribution Memory

Totalizing is performed at the same time for every distribution memory location.
The user can delete a certain location at any time which defines the totalizing
period.

Name Type Address Range of Values / Meaning Reference
Distribution memory 1 REAL DBD000 For saving the total quantity related to WU

5-78 SIWAREX FTC

5.17.1

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Address Range of Values / Meaning Reference
and rounded to the numeral step
Distribution memory 2

Distribution memory 3

Distribution memory 4

Distribution memory 5

Distribution memory 6

Distribution memory 7

Distribution memory 8

32

REAL DBD004 For saving the total quantity and rounded to

the numeral step WU;

REAL DBD008 For saving the total quantity rounded to the

numeral step WU

REAL DBD012 For saving the total quantity and rounded to

the numeral step WU;

REAL DBD016 For saving the total quantity and rounded to

the numeral step LWU

REAL DBD020 For saving the total quantity and rounded to

the numeral step LWU;

REAL DBD024 For saving the total quantity and rounded to

the numeral step LWU

REAL DBD028 For saving the total quantity and rounded to

the numeral step LWU;

5.17.2

5.17.3

5.17.4

5.17.5

5.17.6

5.17.7

5.16.8

Table 5-17 Allocation of DR 33

5.17.1 DR 33 – Distribution Memory 1

Content of dis

tribution memory. Dimension in weight units [WU]. Can be reset with

instruction „Delete distribution memory 1“ or „Log and delete distribution memory 1“.

5.17.2 DR 33 – Distribution Memory 2

nt of distribution memory. Dimension in weight units [WU]. Can be reset with

Conte
the instruction „Delete distribution memory 2“ or „Log and delete distribution
memory 2“.

5.17.3 DR 33 – Distribution Memory 3

nt of distribution memory. Dimension in weight units [WU]. Can be reset with

Conte
the instruction „Delete distribution memory 3“ or „Log and delete distribution
memory 3“.

5.17.4 DR 33 – Distribution Memory 4

nt of distribution memory. Dimension in weight units [WU]. Can be reset with

Conte
the instruction „Delete distribution memory 4“ or „Log and delete distribution
memory 4“.

5.17.5 DR 33 – Distribution Memory 5

nt of distribution memory. Dimension in Large weight unit [LWU]. Can be

Conte
reset with instruction „Delete distribution memory 5“ or „Log and delete distribution
memory 5“.

5.17.6 DR 33 – Distribution Memory 6

nt of distribution memory. Dimension in Large weight unit [LWU]. Can be

Conte
reset with instruction „Delete distribution memory 6“ or „Log and delete distribution
memory 6“.

SIWAREX FTC

5-79

5.17.7 DR 33 – Distribution Memory 7

Content of distribution memory. Dimension in Large weight unit [LWU]. Can be
reset with instruction „Delete distribution memory 7“ or „Log and delete distribution
memory 7“.

5.17.8 DR 33 – Distribution Memory 8

nt of distribution memory. Dimension in Large weight unit [LWU]. Can be

Conte
reset with instruction „Delete distribution memory 8“ or „Log and delete distribution
memory 8“.

5.18 DR 34 ASCII Display Value

The ASCII weight value corresponds with the value on the main display of the
scale.

The data record is displayed in a separate window in SIWATOOL FTC by
activating function "Actual value".

Name Type Address Default Range of Values / Meaning Reference

Current weight in ASCII
format

18

STRING[1

6]

DBB000 - Current weight in ASCII format as output on the

display

Table 5-18 Allocation of DR 34

SIWAREX FTC controls the content of DR 34 via instructions 25, 26, 128...142,
181… 192.

5.19 DR 35 Encoded Information for Verifiable Display

The content of the DR 35 corresponds with the DR 34, but is encoded. The
verifiable display is generated on the SIMATIC OP/TP from the contents of DR 35.

Name Type Address Default Range of Values / Meaning Reference

Coded data fro verifiable
weight display

0

Table 5-19 Allocation of DR 35

Hex DBD000 Content is not made public

5.20 DR 40 to 43 Log Text 1 to 4

The logs can be defined in data records DR 40 to DR 43. A log text can either be
printed automatically or on command or it can be saved in the verifiable MMC
memory.

5-80 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Log text entries 1 to 4 are comp

osed of fixed segments such as title and label and

of variable fields.

The variable fields can contain various values from the SIWAREX FTC.

In addition, 4 designation variables can be defined in addition to the process
variables. These designations are 4*16 bytes long and can be specified at any time
by the SIMATIC CPU. DR 40 to 43 cannot be defined through the SIMATIC CPU.

Name Type Address Default Range of Values / Meaning Reference

Log text 1
Log text 1

162

STRING[160] DBB000 LF,’FF0C’,SP,’FF0D’,

SP,’FF0F’,SP,SP,’FF
05’,CR,EOT;
(Prot.-ID, Date, Time,
Weight)

Place holder for field functions „0FFh,Index“
(indicated here with xx).
Unused characters are initialized with 0
(for process values, see below)

Table 5-20 Allocation of DR 40

SIWAREX FTC

5-81

Index

(with log output
0xFF,nn)

NAWI fields (nn)

0 NAWI status flags j n - ­1 Grossweight_Process j j 14 •12345.678•kg•
2 Netweight_Process j j 14 •12345.678•kg•
3 Tareweight_Process j j 14 •12345.678•kg•
4 B/N weight verifiable

5 B/N Weight_x10 j n - ­6 Tare weight (verifiable /

7 Pulse counter value j j 10 1234567890
8 Temperature j n 5 21.5

9 Operating error j n - ­10
11
12 Log ID n j 16 <No•1234567890•>
13 Date (dd.mm.yy) n j 8 27.12.02
14 Date (yy-mm-dd) n j 8 02-12-27
15 Time n j 8 13:05:00
16 String 1 n j 16 Milk powder •••••
17 String 2 n j 16 Bread crumbs••••
18 String 3 n j 16 Sugar••••••••••
19 String 4 n j 16 Wheat flour••••••
20
21 Description n j 10 <Differential_dosing_scale1>
22
23
24
25
26
27
28
29

Conti-Fields (nn)

30 Conti-Status flags j n -
31 Distribution memory 1 j j 16 S1•12345678.9•kg
32 Distribution memory 2 j j 16 S2•12345.6789•kg
33 Distribution memory 3 j j 16 S3•12345.6789•kg
34 Distribution memory 4 j j 16 S4•12345.6789•kg
35 Distribution memory 5 j j 16 S5•12345.6789•kg
36 Distribution memory 6 j j 16 S6•12345.6789•kg
37 Distribution memory 7 j j 16 S7•12345.6789•kg
38 Distribution memory 8 j j 16 S8•12345.6789•kg
39 Flow rate 1 j j 16 F1•1234567.8kg/s
40 Flow rate 2 j j 16 F2•1234567.8kg/h
41 Flow rate 3 j j 16 F3•1234567.8•t/h
42
43 Belt load j j 16 BB 1234567.8kg/m
44 Flow in % j j 16 FS•123•%••••••••
45 Belt load in % j j 16 BB•123•%••••••••
46 Belt speed in % j j 16 BS•123•%••••••••
47
48
49
50
51

Value S7 Log

calibratable)

Unfiltered raw value
Filtered raw value 1

Belt speed

Current setpoint
Effective setpoint
Current control difference
Act. Control difference in %
Act. Difference vol/grav in % j

field

j j 18 <N1•12345.678•kg•>

j j 18 <PT•12345.678•kg•>

j n - ­j n - -

j j 16 BS•1234567.8•m/s

j j 18
j j 18
j j 18
j j 10 D•123,00•%

j

Field length

[Byte]
(for log field
only)

10

Field layout (example)

(for log field only)

<B1•-12345.67•kg•>

SP•1234567.8kg/s
SW•1234567.8kg/s
DI•1234567.8kg/s

K•123,00•%

5-82 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

52
53

54

55
56
57
58
59
60

Fill level in % j
Actuation signal according

to controller in %
Actuation signal according
to Mat-KL in %
Actuation signal in % j

Average weight change
Average flow rate
Dosing consistency

j
j

j

j

j

j

n j 10 AW•12345678.90•kg•
n j 10 AF•1234567.89•kg/s
n j 10 DC•1234567.89•••••

10
18

10

10

W•123,00•%
C•123,00•%

M•123,00•%

Y•123,00•%

Table 5-21 Process values for allocating log fields

5.21 DR 44 Last Log

The log data is stored up until the next logging procedure in DR 44. If necessary,
the content can be output again.

Name Type Address Default Range of Values / Meaning Reference

Last log
MMC-ID

Reserve 1

Reserve 2

Log ID

Last log data STRING[160] DBB012 STRING[160] = 0H Log text for last logging procedure

174

BYTE[5] DBB000 0 1 byte manufacturer's ID + 4 bytes serial

number; with log output to RS232 interface
always 0

BYTE DBB005 0 Reserve 1

WORD DBB006 0 Reserve 2

DINT DBD008 0 ID for stored log text

5.21.1

5.21.2

5.21.3

Table 5-22 Allocation of DR 44

5.21.1 DR 44 - MMC-ID

Identification

of the MMC card.

5.21.2 DR 44 - Log ID

The log ID is

a unique log number that can be used to identify the log. The number

is incremented with every logging procedure.

5.21.3 DR 44 - Last Log Data

The last outp

ut log data can be read up until the next logging procedure.

5.22 DR 45 String

The string is test that can be inserted as variables in the log. The content of the string
can be defined through SIWATOOL or from control program of the SIMATIC CPU.

SIWAREX FTC

5-83

Name Type Address Default Range of Values / Meaning Reference

String
String 1

String 2

String 3

String 4

72

STRING[16] DBB000 "String 1 " 16 string 1

STRING[16] DBB018 „String 2 „ 16 String 2

STRING[16] DBB036 „String 3 „ 16 String 3

STRING[16] DBB054 „String 4 „ 16 String 4

Table 5-23 Allocation of DR 45

5.23 DR 46 Parameter for Reading MMC Logs in SIMATIC

Scale logs can be saved on the MMC card. If necessary, a verifiable (legal) log can
be read and its contents can be checked using the SIWATOOL FTC program.

Data records DR 46/DR 47 can be used to read any log in SIMATIC S7 (not
verifiable and only to be used as operational display). The user enters the desired
log ID in DR 46 and then sends DR 46 to the SIWAREX FTC. A short time later,
the log is prepared for reading (Status bit „MMC data ready S7). If the user now
requests the DR 47 with the log, the log with the desired ID is read in DR 47.

The last log can also be read through DR 47. 1 must be entered in BYTE 4 of DR 46.
In this case, the predefined log ID is ignored.

Procedures:

o Define ID number and enter in DR 46

o Send the DR 46 to the scale

o Wait for status bit "MMC data ready S7"

o Read DR 47

o Display or check content of log.

Name Type Address Default Range of Values / Meaning

Index
ID number for reading DINT DBD000 0 The definition ensures that the log with the ID

Request for the last data
record

Reserved

6

BYTE DBB004 0 With the definition = 1, the last log is read through

BYTE DBB005 0 Reserve.

number is read when reading the DR 47. If the
request of the last data record (byte 0) is
activated, the ID number is ignored.

data record DR 47.

eference

Table 5-24 Allocation of DR 46

5-84 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

5.24 DR 47 Requested Log

The log data is prepared in DR 47.

Name Type Address Default Range of Values / Meaning Reference

MMC-ID

Reserve 1

Reserve 2

Log ID

Log data 1

Log data 2

Log data 3

Log data 4

180

BYTE[5] DBB000 0 1 byte manufacturer's ID + 4 bytes serial

number; with log output to RS232 interface
always 0

BYTE DBB005 0 Reserve 1

WORD DBB006 0 Reserve 2

DINT DBD008 0 ID for stored log text

STRING[40] DBB012 STRING[40] = 0H Log text Part 1

STRING[40] DBB054 STRING[40] = 0H Log text Part 2

STRING[40] DBB096 STRING[40] = 0H Log text Part 3

STRING[40] DBB0138 STRING[40] = 0H Log text Part 4

Table 5-25 Allocation of DR 47

5.24.1 DR 47 - MMC-ID

Identification

of the MMC card.

5.24.2 DR 47 - Log ID

The log ID is

a unique log number that can be used to identify the log. The number

is incremented with every logging procedure.

5.24.3 DR 47 - Log Data

The log data

consists of 4 strings.

5.25 DR 120/121 Trace - Data Logging

The trace function is used for logging measurement values and current states of
the scale in RAM memory of the SIWAREX FTC or in the MMC card.

When logging to RAM, SIWATOOL FTC reads the trace elements with data record
120 and when logging to the MMC it is done through data record 121.

The recording is started with the instruction "Start the recording"
ended with instruction "End current recording"

By defining parameters in data record DR 7
can be defined. The data record cannot be read through the SIMATIC CPU.

70 and can be

71.

MMC Parameter the trace function

Name Type

Timestamp1 DATE&TIME 8
Conti- Status flag DINT 4 Status bit
NAWI status flags DINT 4 Status bit
Unfiltered raw value DINT 4 Unfiltered digit value from ADC

SIWAREX FTC

5-85

Length

bytes

Range of Values / Meaning Reference

Name

Filtered raw value DINT 4 Filtered digit value
Net_Process REAL 4 Net weight
Belt load REAL 4 Current belt load WU/m
Pulse counter value DINT 4 Pulse counter value with reference to the

Flowrate 1 REAL 4 Flowrate [Weight/Time unit]
Belt speed m/sec REAL 4 Belt speed
Digital input states BYTE 1 Status of the DE
Reserved BYTE 1 Reserved
Current actuation signal

from controller in % *100
Setpoint value

Effective setpoint

Actuation signal according
to material characteristic
curve

Actuation signal according
to device characteristic
curve
Reserved INT 2 Reserved

64

Type Range of Values / Meaning Reference

INT 2 Current actuation signal from controller in % *100

REAL 4 Setpoint value

REAL 4 Effective setpoint

REAL 4 Actuation signal according to material

INT 2 Actuation signal according to device characteristic

Length

bytes

measurement time

characteristic curve

curve

Table 5-26 Combination of recording elements

The evaluation of the collected data can be handled using SIWATOOL FTC and
MS Excel. All of the logged elements that have been recorded are stored in the
Excel table and can be read in a graph over time.

The progress of the weighing procedure can be analyzed and optimized.

In the event of sporadic events in the system, the recording can be activated as
circulating memory and can be ended with a condition in the SIMATIC control
program at any time. The subsequent evaluation can help to explain a sporadic
event in the system. A simultaneous evaluation of the message buffer, in which the
last 100 events are stored (evaluation with SIWATOOL FTC) offers a good basis
for an analysis or remote analysis.

An element requires 46 bytes. If the recording is run e.g. once per 50 msec, it
means memory requirements of 920 bytes per second.

In the simplest case, the RAM memory (approx. 2 MB) of the SIWAREX FTC can
be used for the recording.

5.26 DR 123 Data Content MMC

By reading the DR 122, SIWATOOL FTC can be used to determine which data is
stored on the Micro Memory Card. Based on this information, the user can read
targeted records and logs.

5-86 SIWAREX FTC

WEIGHING FUNCTIONS AND PARAMETERS

Name Type Length Range of Values / Meaning Reference
Log ID

MMC ID BYTE[5] 5 1 byte manufacturer ID and 4 bytes serial

Reserve 1 BYTE 1 Reserve 1
Reserve 2 INT 2 Reserve 2
MMC memory capacity DINT 4 MMC - total memory capacity in bytes
Available MMC capacity
for log data
Available capacity for trace
data

Oldest MMC-Log-ID DINT 4 Oldest element
Youngest MMC-Log-ID DINT 4 Youngest element
Oldest MMC-Trace- ID DINT 4 Oldest element
Youngest MMC-Trace-ID

Oldest RAM-Trace- ID

Youngest RAM-Trace-ID

48

DINT 4

DINT 4 Capacity of the MMC for log data [Bytes]

DINT 4 Display depending on the defined trace target

DINT 4 Youngest element

DINT 4 Oldest element

DINT 4 Youngest element

Depending on the log output RS232 / MMC,
this ID is shown as follows

RS232
The ID is incremented with every log output
(not with repeat") and is stored and managed
in RAM memory. This number is only reset
with default values.

MMC
The ID is incremented with every log output
(not with repeat") and is stored and managed
in MMC memory. This number can only be
reset by deleting or formatting the card.

number

RAM or MMC in the interface parameters
[Bytes]

Table 5-27 Overview of MMC data

5.27 DR 122 Log Data MMC

By reading the DR 122, SIWATOOL FTC can be used to determine which log data
is stored on the MMC.

A log can then be read for a defined log ID.

Name Type Length Range of Values / Meaning Reference

MMC-ID BYTE[5] 5 1 byte manufacturer ID + 4 bytes serial

Reserve 1 BYTE 1 Reserve 1
Length

Log ID DINT 4 ID for stored log text
Log text BYTE[n] 174 Log text 1|2|3|4

Block check character

188

INT 2 [n] Number of valid data bytes in the log text;

INT 2 CRC16

number

if 0, the requested log number does not exist

(MMC-ID + Log ID + Log text[n])

Table 5-28 MMC log

SIWAREX FTC

5-87

6 Commands

6.1 Command Groups

The SIWAREX command are divided into groups. The combining of the commands
into a group is done according to their functionalities.

Every command has a unique number. A command can be sent via various
interfaces (SIMATIC, SIWATOOL FTC, digital input).

Every time that a command is sent to SIWAREX FTC, a check must be made for
whether the command has been executed correctly. The data and operating errors
(synchronous errors) that are generated provide information on why the command
could not be executed.

The Service and adjustment commands group is used during the
commissioning of the scale. As long as the scale is not adjusted, it can only be
used in service operation. Switching to service operation is indicated in the status
bits.

The group of scale commands NAWI (non automatic weighing instrument)
contains all instructions that concern the handling of a static scale. Normally,
commands that have anything to do with the operation of the SIWAREX FTC as a
non-automatic weighing instrument (e.g. zero setting, taring).

The group of display commands contain all commands that are used for
switching the content of the main display.

The extensive group of Belt Scale commands is used for controlling the belt
scale. The basic behaviour of the SIWAREX FTC is defined one time by defining
parameters.

The group of log commands contains commands that control the log output to a
printer or the verifiable storage of the logs.

Use of the Micro Memory Card MMC is controlled with commands from the
command group Micro Memory commands.

After receiving a command, SIWAREX FTC checks for whether the command can
be executed. If the check results are negative, the user is informed of the cause by
an output of a "synchronous" message (see chapter

Diagnosis

).

7 Messages and

6-88 SIWAREX FTC