WIKA T53 User Manual

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Configuration Manual for FOUNDATION™ Fieldbus

Fieldbus Temperature Transmitter Model T53.10

for FOUNDATION™ Fieldbus and PROFIBUS® PA

Fieldbus Temperature Transmitter Model T53.10

CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

This configuration manual The Fieldbus Software Parameter lists abbreviations

1.0 The Resource Block, Fieldbus Foundation

1.1 Introduction

1.2 Description

1.3 RESTART parameter

1.4 Non-volatile parameters

1.5 Timeout for remote cascade modes

1.6 Alert Notification

1.7 FEATURES / FEATURE_SEL parameters

1.8 Fault state for the whole resource

1.9 Write lock by software

1.10 Features being implemented

1.11 BLOCK_ERR

1.12 Supported Modes

1.13 Resource Block Parameter List, Fieldbus Foundation

2.0 The Transducer Block

2.1 The Transducer Block

2.2 The data of the Transducer Block Parameter List are grouped as follows:

2.3 Default configuration

2.4 Your application set up.

2.5 AI_Transducer Block Configuration Flowchart

2.6 - Transducer Block Examples Setup

2.6.1 Measurement of RTD with one sensor:

2.6.2 Measurement of RTD with two sensors:

2.6.3 Measurement of thermocouple with one sensor:

2.6.4 Measurement of thermocouple with two sensors:

2.6.5 Measurement of combined sensors (Sensor 1 = TC and Sensor 2 = RTD):

2.6.6 Measurement of resistance (linear) with one sensor:

2.6.7 Measurement of resistance (linear) with two sensors:

2.6.8 Measurement of potentiometer (linear) with one sensor:

2.6.9 Measurement of potentiometer (linear) with two sensors:

2.6.10 Measurement of voltage (linear) with one sensor:

2.6.11 Measurement of voltage (linear) with two sensors:

2.6.12 Measurement of 2 potentiometers (with Linear interpolation linearisation):

2.6.13 Measurement of TC (with Custom Polynomial Linearisation) on sensor 1

2.7 AI_Transducer and PR_CUST_LIN Block, Schematic

2.8 AI_TRANSDUCER Block Parameter List

2.8.1 Sensor characterising parameters

2.8.2 RTD / Resistor specific parameters

2.8.3 Thermocouple specific parameters

2.8.4 Output conditioning parameters

2.8.5 Output parameters

2.8.6 Diagnostic parameters

2.8.7 Sensor error detection parameters

2.8.8 Sensor calibration, Description

2.8.9 Sensor Calibration Parameters

2.9 PR_CUST_LIN Block Parameter List

2.9.1 Linear interpolation linearisation, Description

2.9.2 Linear Interpolation Linearisation, Parameter List.

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2.9.3 Custom polynomial linearisation, Description

2.9.4 Custom Polynomial Linearisation, Parameter List

2.10 PR_CUST_PRIV Block Reserved Parameter List

2.10.1 Description, PR_CUST_PRIV Block

3.0 Analogue Input Blocks

3.1 Analogue Input Blocks, Fieldbus Foundation

3.2 Overview

3.3 Analogue Input Block Schematic

3.4 Description

3.5 Supported Modes

3.6 To enable the Simulation mode

3.7 Alarm Types

3.8 Mode Handling

3.9 Status Handling

3.10 Initialisation

3.11 Analogue Input Blocks Parameter List, Fieldbus Foundation

4.0 PID Control Block, Fieldbus Foundation

4.1 Introduction:

4.2 Overview

4.3 Schematic:

4.4 Description

4.5 Supported Modes

4.6 Alarm Types

4.7 Mode Handling

4.8 Status Handling

4.9 Initialization

4.10 PID Control Block Parameter List

5.0 Link Active Scheduler (LAS)

5.1 Introduction:

5.2 Overview

5.3 Description

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Introduction

This configuration manual

contains the necessary information for configuration of the fieldbus temperature transmitter T53 via a host system with application software for Foundation Fieldbus™ (for PROFIBUS HOST systems please refer to the “Configuration Manual for PROFIBUS”). The autoswitch function of the modules ensures automatic switch to the connected protocol.

The Fieldbus Software

has been developped by WIKA according to the specifications of the Fieldbus Foundation and the PROFIBUS Nutzerorganisation.

The files for Foundation

Fieldbus are: xxyy.ffo - Device Description binary file xxyy.sym - Device Description symbol file xxyyzz.cff - Capability file xx, yy and zz refer to the version numbers of the files.

These files can be downloaded from our homepage www.wika.de. Please follow the instructions for the application software in question when installing the files.

Parameter lists abbreviations

In the Store column: SRC = Static Revision Counter; N = No; D = Dynamic; Cst = Constant. The parameter doesn’t change in a device In the RO / R/W column: RO = Read Only; R /W = Read Write; * = Mixed of RO and R/W; ** = Don’t care

1.0 The Resource Block, Fieldbus Foundation

1.1 Introduction The resource block is used to define a hardware specific characteristics of the function block applications. It provides WIKA manufacturer’s name, device name, DD and block status and hardware details. It also indicates how much resource (memory and CPU) is available and controls the overall device.

1.2 Description This block contains data that is specific to the hardware that is associated with the resource. All data is modelled within a controlled space, so there are no outside inputs into this block required.

This parameter “set” is intended to be the minimum required for the Function Block Applica tion associated with the resource in which it resides. Some parameters that could be in the set, like calibration data and ambient temperature, are more part of their respective trans ducer blocks. The “mode” is used to control major states of the resource. O/S mode stops all function block execution. The actual mode of the function blocks will be changed to O/S (out of service), but the target mode will not be changed. Auto mode allows normal operation of the resource. IMan shows that the resource is initializing or receiving a software down load. Parameters MANUFAC_ID, DEV_TYPE, DEV_REV, DD_REV, and DD_RESOURCE are required to identify and locate the DD so that Device Description Hosting Services can se lect the correct DD for use with the resource. The parameter HARD_TYPES is a read only bit string that indicates the types of hardware that are available to this resource. If an I/O block is configured that requires a type of hardware that is not available, the result will be a block alarm for a configuration error. The RS_STATE parameter contains the operational state of the Function Block Application for the resource containing this resource block.

1.3 RESTART parameter The RESTART parameter allows degrees of initialization of the resource. They are: 1 - Run: it is the passive state of the parameter 2 - Restart resource: it is intended to clear up problems for example the memory manage ment resource. 3 - Restart with defaults: it is intended to wipe configuration memory, it works like a factory initialization. 4 - Restart processor: it provides a way to hit the reset button on the processor associated with the resource This parameter does not appear in a view because it returns to 1 shortly after being written.

1.4 Non-volatile parameters All non-volatile parameters are saved in EEPROM and therefore used if the device is restart ed.

1.5 Timeout for remote cascade modes SHED_RCAS and SHED_ROUT set the time limit for loss of communication from a remote device. These constants are used by all function blocks that support a remote cascade mode. The effect of a timeout is described in Mode Calculation. Shedding from RCAS/ROUT shall not happen when SHED_RCAS or SHED_ROUT is set to zero.

1.6 Alert Notification The MAX_NOTIFY parameter value is the maximum number of alert reports that this resource can have sent without getting a confirmation, corresponding to the amount of buffer space available for alert messages. A user can set the number lower than that, to control alert flooding, by adjusting the LIM_NOTIFY parameter value. If LIM_NOTIFY is set to zero, then no alerts are reported. The CONFIRM_TIME parameter is the time for the resource to wait for confirmation of receipt of a report before trying again. If the CONFIRM_TIME = 0 the device shall not retry.

1.7 FEATURES / FEATURE_SEL parameters The bit strings FEATURES and FEATURE_SEL determine optional behaviour of the resource. The first defines the available features, and is read only. The second is used to turn on an available feature by configuration. If a bit is set in FEATURE_SEL that is not set in FEA TURES, the result will be a block alarm for a configuration error. The device supports the following features: Reports supported, Fault State supported, Soft Write lock supported.

1.8 Fault state for the whole resource If the user sets the SET_FSTATE parameter, the FAULT_STATE parameter will indicate active and it will cause all output function blocks in the resource to go immediately to the condition chosen by the fault state Type I/O option. It may be cleared by setting the CLR_FSTATE pa rameter. The set and clear parameters do not appear in a view because they are momentary.

1.9 Write lock by software The WRITE_LOCK parameter, if set, will prevent any external change to the static or non volatile data base in the Function Block Application of the resource. Block connections and calculation results will proceed normally, but the configuration will be locked. It is set and cleared by writing to the WRITE_LOCK parameter. Clearing WRITE_LOCK will generate the discrete alert WRITE_ALM, at the WRITE_PRI priority. Setting WRITE_LOCK will clear the alert, if it exists. Before setting WRITE_LOCK parameter to Locked, it is necessary to select the “Soft Write lock supported” option in FEATURE_SEL.

1.10 Features being implemented The parameter CYCLE_TYPE is a bit string that defines the types of cycles that this resource can do. CYCLE_SEL allows the configurator to choose one of them. If CYCLE_SEL contains more than one bit, or the bit set is not set in CYCLE_TYPE, the result will be a block alarm for a configuration error. MIN_CYCLE_T is the manufacturer specified minimum time to ex ecute a cycle. It puts a lower limit on the scheduling of the resource.

MEMORY_SIZE declares the size of the resource for configuration of function blocks, in kilo bytes. The parameter FREE_SPACE shows the percentage of configuration memory that is still available. FREE_TIME shows the approximate percentage of time that the resource has left for processing new function blocks, should they be configured.

1.11 BLOCK_ERR The BLOCK_ERR of the resource block will reflect the following causes:

Device Fault State Set – When FAULT_STATE is active.

Simulate Active – When the Simulate jumper is ON.

Out of Service – When the block is in O/S mode.

1.12 Supported Modes O/S, IMAN and AUTO

Parameter

ST_REV

TAG_DESC

STRATEGY

ALERT_KEY

1.13 Resource Block Parameter List, Fieldbus Foundation

Rel.

Description Type Store

Index

Is incremented each time that there is a change in a static

parameter in the physical block.

Tag name of the block. This parameter must be unique in the

configuration.

This can be used to group a Function Block. It is a user sup

plied parameter for identification purpose.

4 Alert keys

Un-

signed

SRC 2 RO 0

OCTET_ STRING

signed

SRC 32 R/W »«

Un-

SRC 2 R/W 0

Un-

signed 8SRC 1 R/W 0

Size byte

RO /

Min. Max. Default

R/W

MODE_BLK

BLOCK_ERR

RS_STATE

TEST_RW

DD_RESOURCE

MANUFAC_ID

DEV_TYPE

DEV_REV

DD_REV

GRANT_DENY

HARD_TYPES

RESTART

FEATURES

FEATURE_SEL

CYCLE_TYPE

CYCLE_SEL

MIN_CYLCE_T

MEMORY_SIZE

NV_CYCLE_T

FREE_SPACE

FREE_TIME

SHED_RCAS

SHED_ROUT

5 Block running mode DS-69 Mix 4 *

6 Block errors

BIT_

STRING

D 2 RO 0

1,1,

17,16

Un-

7 State of the function block application state machine

signed 8D 1 RO 0

8 Read/write test parameter used only for conformance testing DS-85 D 112 R/W 0..0

String identifying the tag of the resource which contains the

Device Description for this resource. Enumeration; controlled by FF

Manufacturer identification number - used by an interface device to locate the DD file for the resource.

Manufacturer’s model number associated with the resource -

used by interface devices to locate the DD file for the resource.

Manufacturer revision number associated with the resource

- used by an interface device to locate the DD file for the resource.

Revision of the DD associated with the resource - used by an

interface device to locate the DD file for the resource.

VISIBLE_

STRING

Un-

signed

Un-

signed

Un-

signed

Un-

signed

SRC 32 RO » »

SRC 4 RO

SRC 2 RO

SRC 1 RO

WIKA

0x00ec

0x03

0x01

Access Permissions. Options for controlling access of host

computer and local control panels to operating, tuning and

DS-70 SRC 2 R/W 0

alarm parameters of the block.

15 The types of hardware available as channel numbers.

BIT_

STRING

SRC 2 RO 0

1: Run, 2: Restart resource, 3: Restart with defaults,

4: Restart processor Allows a manual restart to be initiated. Several degrees of

Un-

signed

D 1 R/W 1

restart are possible.

BIT_

STRING

BIT_

STRING

BIT_

STRING

BIT_

STRING

Un-

signed

Un-

signed

Un-

signed

Floating

Point

Floating

Point

Un-

signed

Un-

signed

SRC 2 RO 0

SRC 2 RW 0

SRC 2 RO 0xC000

SRC 2 ** 0xC000

SRC 4 RO 0

SRC 2 RO 0

SRC 4 RO 0

D 4 RO 0.0

SRC 4 R/W 640000

17 Used to show supported resource block options.

18 Used to select resource block options.

Identifies the block execution methods available for this

resource

20 Used to select the block execution method for this resource.

Time duration of the shortest cycle interval of which the

resource is capable.

Available configuration memory in the empty resource. To be

checked before attempting a download.

Interval between writing copies of NV parameters to non-vola

tile memory. Zero means never.

Percent of memory available for further configuration. Zero in a

preconfigured resource. Percent of the block processing time that is free to process

additional blocks.

Time duration at which to give up on computer writes to func

tion block RCas locations.

ms time duration at which to give up on computer writes to

function block ROut locations.

Parameter

FAULT_STATE

SET_FSTATE

CLR_FSTATE

MAX_NOTIFY

Rel.

Description Type Store

Index

Active E D Condition set by loss of communication to an out put block, failure promoted to an output block or a physical

contact. When Fault State condition is set, Then output func

tion blocks will perform their FSAFE actions.

Allows the fault state condition to be manually initiated by

selecting Set.

Writing a Clear to this parameter will clear the device fault state

if the field condition, if any, has cleared.

31 Maximum number of unconfirmed notify messages possible.

Size

RO /

byte

Min. Max. Default

R/W

Un-

signed

N 1 RO 1

Un-

signed

D 1 R/W 1

Un-

signed

D 1 R/W 1

Un-

signed 8SRC 1 RO 8

LIM_NOTIFY

CONFIRM_TIME

WRITE_LOCK

UPDATE_EVT

BLOCK_ALM

ALARM_SUM

ACK_OPTION

WRITE_PRI

Maximum number of unconfirmed alert notify messages

allowed.

Un-

signed

SRC 1 R/W 8

Un-

33 Ms The minimum time between retries of alert reports.

If set, no writes from anywhere are allowed, except to clear

WRITE_LOCK. Block inputs will continue to be updated.

signed 32SRC 4 R/W 640000

Un-

signed

SRC 1 R/W 1

35 This alert is generated by any change to the static data DS-73 D 14 RO

The block alarm is used for all configuration, hardware, con

nection failure or system problems in the block. The cause of the alert is entered in the sub code field. The first alert to become active will set the Active status in the Status attribute.

As soon as the Unreported status is cleared by the alert report

DS-72

D 13 R/W

ing task, another block alert may be reported without clearing the Active status, if the sub code has changed.

The current alert status, unacknowledged states, unreported states, and disabled states of the alarms associated with the

function

DS-74 Mix 8 R/W 0,0,0,0

block. 0: Auto ACK Disable

1: Auto ACK Enable

Selection of whether alarms associated with the block will be

BIT_

STRING

SRC 2 R/W 0

automatically acknowledged.

Un-

39 Priority of the alarm generated by clearing the write lock.

signed 8SRC 1 R/W 0

0,0,0,

0,0,9,0

0,0,0, 0,0,0,

8,0,0

WRITE_ALM

ITK_VER_NR

40 This alert is generated if the write lock parameter is cleared. DS-72 D 13 R/W

ITK Version Number

This parameter informs which ITK version is the device (for certified devices only).

Un-

signed

SRC 2 RO 4

0,0,0, 0,0,0,

10,0,0

2.0 The Transducer Block

2.1 The Transducer Block contains all of the manufacturer-specific parameters that define how the T53 Transmitter functions. Selections such as setting of input type, engineering units, defining the dual func tionality when using the dual input, and so forth, are performed in the Transducer Block.

The transducer block in T53 allows the user to select a large number of sophisticated func tions. Therefore, the configuration of the transmitter must be carried out with the greatest possible care.

2.2 The data of the Transducer Block Parameter List are grouped as follows:

2.8 AI_TRANSDUCER Block

2.8.1 Sensor characterising parameters

2.8.2 RTD / resistor specific parameters

2.8.3 Thermocouple specific parameters

2.8.4 Output conditioning parameters

2.8.5 Output parameters

2.8.6 Diagnostic parameters

2.8.7 Sensor error detection parameters

2.8.9 Sensor calibration parameters

2.9 PR_CUST_LIN Block

2.9.2 Linear Interpolation Linearisation

2.9.4 Custom Polynomial linearisation

2.10 PR_CUST_PRIV Block

2.10.1 PR_CUST_PRIV Block All product-specific parameters are set off in grey background in the TB Parameter List. In order to configure these parameters, the files mentioned in the introduction must be avail able to the application software.

2.3 Default configuration WIKA delivers the transmitters with at default configuration which will suit the customer’s demand in many cases. The configuration task has thus been reduced considerably. The individual default configurations are shown in the TB Parameter List, but in short the default configuration is as follows: Pt100 acc. to the standard EN 60 751 (2.8.1 LIN_TYPE, value 102) °C (2.8.1 PRIMARY_VALUE_UNIT, value 1001) 3-wire connection (2.8.2 SENSOR_CONNECTION, value 1) Only sensor 1 (2.8.4 SENSOR_MEAS_TYPE, value 220) No sensor error detection (2.8.7 SENSOR_WIRE_CHECK_1, value 3)

2.4 Your application set up. In the Transducer block all parameters marked R / W can be adapted to suit any measurement in temperature, ohm or mV. The way of presenting the file data mentioned in the introduction varies greatly from one piece of application software to the other. Some pro grams show drop down menus in which the parameters must be selected via text lines, while other programs require the user to type in the numerical value of the parameter selection.

2.5 AI_Transducer Block Configuration Flowchart

Configure T53

Transducer block

Temperature

measurement?

Set

PRIMARY_VALUE_UNIT

to F,R,C or K

RTD?

Thermo-couple?

Set LIN_TYPE to RTD

type (Pt100 etc.)

4-wire?

Set

SENSOR_CONNECTION

to 2-,3- or 4-wire.

Enter wire resistance in

Ohms for both wires to

COMP_WIRE1

2-wire?

Enter wire resistance in

Ohms for both wires to

COMP_WIRE2

YES

Enter setup for sensor 2:

YES

Set LIN_TYPE to TC

type (TC K etc.)

Set RJ_TYPE (internal,

external etc.)

Set LIN_TYPE_2 to RTD

type (Pt100 etc.)

Set

SENSOR_MEAS_TYPE

to single sensor type

Dual sensor?

Enter setup for sensor 2:

Set LIN_TYPE_2 to TC type

(TC K etc.)

Enter RJ temperature to

EXTERNAL_RJ_VALUE

RJ_TYPE

external?

YES

RJ_TYPE

ext. 2.wire?

Enter wire resistance in

Ohms for both wires to

COMP_WIRE_RJ

YES

Set

SENSOR_MEAS_TYPE

to single sensor type

Set SENSOR_MEAS_TYPE

to dual sensor type

Set SENSOR_MEAS_TYPE

to dual sensor type

YES

Dual sensor?

YES

RTD+Thermo-

couple?

Set LIN_TYPE to TC

type (TC K etc.)

Set RJ_TYPE

(internal, external etc.)

Set

SENSOR_MEAS_TYPE

to dual sensor type

Set LIN_TYPE_2 to

RTD type (Pt100 etc.)

Enter RJ temperature to EXTERNAL_RJ_VALUE

RJ_TYPE

external?

YES

Error! (try again)

Resistance?

Set

PRIMARY_VALUE_UNIT

to Ohm or kOhm

Set

SENSOR_CONNECTION

to 2-,3- or 4-wire.

Dual sensor?

Enter wire resistance in

Ohms for both wires to

COMP_WIRE1

2-wire?

YES

Enter setup for sensor 2:

YES

Set LIN_TYPE_2 to ”no linearisation” or ”linearisation table”

Set

SENSOR_MEAS_TYPE

to single sensor type

Set LIN_TYPE to ”no linearisation” or ”linearisation table”

Set SENSOR_MEAS_TYPE

to dual sensor type

Enter wire resistance in

Ohms for both wires to

COMP_WIRE2

Millivolts?

Set

PRIMARY_VALUE_UNIT

to V,mV or µV

Set LIN_TYPE to ”no linearisation” or ”linearisation table”

Dual sensor?

Set LIN_TYPE_2 to

”no linearisation” or ”linearisation table”

Set

SENSOR_MEAS_TYPE

to single sensor type

Set SENSOR_MEAS_TYPE

to dual sensor type

Enter setup for sensor 2:

YES

4-wire?

YES

3b3a

Potentiometer?

Set

PRIMARY_VALUE_UNIT

to ”%”

Set

SENSOR_CONNECTION

to 3- or 4-wire.

Enter wire resistance in

Ohms for 2 wires to

COMP_WIRE1

3-wire?

YES

Enter setup for sensor 2:

YES

Set LIN_TYPE_2 to ”no linearisation” or

”linearisation table”

Set

SENSOR_MEAS_TYPE

to single sensor type

Set LIN_TYPE to ”no linearisation” or ”linearisation table”

Set SENSOR_MEAS_TYPE

to dual sensor type

Enter wire resistance in

Ohms for 2 wires to

COMP_WIRE2

Error! (try again)

Finished.

Transducer block

is configured!

Enter Custom RTD

polynomial values

Linearisation

table?

Custom RTD?

Enter linearisation

table values

YES

Enter Custom TC polynomial values

Custom TC?

YES

Dual sensor?

YES

2.6 - Transducer Block Examples Setup

2.6.1 Measurement of RTD with one sensor:

PRIMARY_VALUE_UNIT . . . . = K, °C, °F or °R

LIN_TYPE. . . . . . . . . . . . . . . . = Any RTD

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = PV = SV_1, SV_2 not available

SENSOR_CONNECTION . . . . = 2-, 3- or 4-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

2.6.2 Measurement of RTD with two sensors:

PRIMARY_VALUE_UNIT . . . . = K, °C, °F or °R

LIN_TYPE. . . . . . . . . . . . . . . . = Any RTD

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = 2- or 3-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

. . . . . . . . . . . . . . = N/A (ignored in setup check)

. . = N/A (ignored in setup check)

. . . . . . . . . . . . . . = Any RTD

. . = Default set to 2-wire

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

2.6.3 Measurement of thermocouple with one sensor:

PRIMARY_VALUE_UNIT . . . . = K, °C, °F or °R

LIN_TYPE. . . . . . . . . . . . . . . . = Any TC

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = PV = SV_1, SV_2 not available

SENSOR_CONNECTION . . . . = N/A (ignored in setup check)

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = No Reference Junction, Internal, External (constant value),

Sensor 2-wire or Sensor 3-wire Connections:

. . . . . . . . . . . . . . = N/A (ignored in setup check)

. . = N/A (ignored in setup check)

2.6.4 Measurement of thermocouple with two sensors:

PRIMARY_VALUE_UNIT . . . . = K, °C, °F or °R

LIN_TYPE. . . . . . . . . . . . . . . . = Any TC

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = N/A (ignored in setup check)

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = No RJ, Internal, External (constant value) or Sensor 2-wire

Connections:

2.6.5 Measurement of combined sensors (Sensor 1 = TC and Sensor 2 = RTD):

PRIMARY_VALUE_UNIT . . . . = K, °C, °F or °R

LIN_TYPE. . . . . . . . . . . . . . . . = Any TC

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = N/A (ignored in setup check)

SENSOR_CONNECTION_2 RJ_TYPE Connections:

. . . . . . . . . . . . . . = Any TC

. . = N/A (ignored in setup check)

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

. . . . . . . . . . . . . . = Any RTD

. . = 2- or 3-wire

. . . . . . . . . . . . . . . . = No Reference Junction, Internal, External (constant value)

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

2.6.6 Measurement of resistance (linear) with one sensor:

PRIMARY_VALUE_UNIT . . . . = Ohm or kOhm

LIN_TYPE. . . . . . . . . . . . . . . . = No linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = PV = SV_1, SV_2 not available

SENSOR_CONNECTION . . . . = 2-, 3- or 4-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

. . . . . . . . . . . . . . = N/A (ignored in setup check)

. . = N/A (ignored in setup check)

2.6.7 Measurement of resistance (linear) with two sensors:

PRIMARY_VALUE_UNIT . . . . = Ohm or kOhm

LIN_TYPE. . . . . . . . . . . . . . . . = No linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = 2- or 3-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

2.6.8 Measurement of potentiometer (linear) with one sensor:

PRIMARY_VALUE_UNIT . . . . = %

LIN_TYPE. . . . . . . . . . . . . . . . = No linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = PV = SV_1, SV_2 not available

SENSOR_CONNECTION . . . . = 3- or 4-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

. . . . . . . . . . . . . . = No linearisation

. . = Default set to 2-wire

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

. . . . . . . . . . . . . . = N/A (ignored in setup check)

. . = N/A (ignored in setup check)

2.6.9 Measurement of potentiometer (linear) with two sensors:

PRIMARY_VALUE_UNIT . . . . = %

LIN_TYPE. . . . . . . . . . . . . . . . = No linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = Default set to 3-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

. . . . . . . . . . . . . . = No linearisation

. . = Default set to 3-wire

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

2.6.10 Measurement of voltage (linear) with one sensor:

PRIMARY_VALUE_UNIT . . . . = µV, mV or V

LIN_TYPE. . . . . . . . . . . . . . . . = No linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = PV = SV_1, SV_2 not available

SENSOR_CONNECTION . . . . = N/A (ignored in setup check)

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

2.6.11 Measurement of voltage (linear) with two sensors:

PRIMARY_VALUE_UNIT . . . . = µV, mV or V

LIN_TYPE. . . . . . . . . . . . . . . . = No linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = N/A (ignored in setup check)

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

. . . . . . . . . . . . . . = N/A (ignored in setup check)

. . = N/A (ignored in setup check)

. . . . . . . . . . . . . . = No linearisation

. . = N/A (ignored in setup check)

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

2.6.12 Measurement of 2 potentiometers (with Linear interpolation linearisation):

PRIMARY_VALUE_UNIT . . . . = %

LIN_TYPE. . . . . . . . . . . . . . . . = Table Linearisation

LIN_TYPE_2

SENSOR_MEAS_TYPE . . . . . = Anything, but not "PV = SV_1, SV_2 not available"

SENSOR_CONNECTION . . . . = Default set to 3-wire

SENSOR_CONNECTION_2

RJ_TYPE . . . . . . . . . . . . . . . . = N/A (ignored in setup check)

Connections:

The coordinates (x,y) describing the linear interpolation linearisation must be entered in PR_ CUST_LIN Block (PA Slot 4). See 2.9.2 Linear Interpolation Linearisation, Paramter List for further details. Example: The coordinates for converting the signal from a logarithmic potentiometer to a linear signal.

TAB_ACTUAL_NUMBER = 10 (number of linearisation points to follow up to max 50) TAB_XY_VALUE1 = 0,0; -100 TAB_XY_VALUE2 = 0,1; 0 TAB_XY_VALUE3 = 0,2; 100 TAB_XY_VALUE4 = 0,4; 200

. . . . . . . . . . . . . . = Table Linearisation (same table as sensor 1)

. . = Default set to 3-wire

Connections with two sensors can be configured for 2 measurements, difference, average or redundancy

TAB_XY_VALUE5 = 0,8; 300 TAB_XY_VALUE6 = 1,6; 400 TAB_XY_VALUE7 = 3,2; 500 TAB_XY_VALUE8 = 6,4; 600 TAB_XY_VALUE9 = 12,8; 700 TAB_XY_VALUE10 = 25,6; 800

(Output will readout 325% with 1,0% potentiometer value)

2.6.13 Measurement of TC (with Custom Polynomial Linearisation) on sensor 1 PRIMARY_VALUE_UNIT = K, °C, °F or °R LIN_TYPE = Custom defined TC LIN_TYPE_2 = N/A (ignored in setup check) SENSOR_MEAS_TYPE = PV = SV_1, SV_2 not available SENSOR_CONNECTION = N/A (ignored in setup check) SENSOR_CONNECTION_2 = N/A (ignored in setup check) RJ_TYPE = No Reference Junction, Internal, External (constant value) or Sensor 2-wire or Sensor 3-wire Connections:

Now enter the Custom TC parameters in PR_CUST_LIN Block (PA Slot 4). See 2.9.4 Custom Polynomial Linearisation, Parameter List for further details. Remember to enter values for the RJ polynomial if RJ_TYPE is any value other than “No ref erence Junction”.

Example: The parameters and coefficients for converting a special TC to a linear temperature signal.

CUSTOM_TC_NAME = Custom TC Example CUSTOM_TC_POLY_COUNT = 5 CUSTOM_TC_MIN_IN = -6500.0 CUSTOM_TC_MIN_OUT = -100.0 CUSTOM_TC_MAX_OUT = 1200.0

max. input

CUSTOM_TC_POLY_X

CUSTOM_TC_POLY_1 -3200.0 -3.84E-13 -5.65E-9 -3.36E-5 -6.10E-2 -8.44E1

CUSTOM_TC_POLY_2 3500.0 -8.13E-15 7.29E-11 -4.18E-7 2.53E-2 -1.08E-2

CUSTOM_TC_POLY_3 10000.0 -1.35E-15 1.50E-11 1.41E-7 2.26E-2 4.18

CUSTOM_TC_POLY_4 30000.0 3.49E-18 2.19E-12 -1.53E-7 2.68E-2 -9.26

CUSTOM_TC_POLY_5 70000.0 6.27E-17 -8.76E-12 5.34E-7 8.69E-3 1.65E2

limit in µV

for POLY_X

4th degree

coefficient

for POLY_X

3th degree

coefficient

for POLY_X

2th degree

coefficient

for POLY_X

1st degree

coefficient

for POLY_X

0 degree

coefficient

for POLY_X

3th degree

coefficient

CUSTOM_TC_RJ_POLY -1.11E-4 2.65E-2 3.94E1 3.94E-1

2th degree

coefficient

1st degree

coefficient

0 degree

coefficient

A TC input of 5000 µV and an RJ temperature of 25ºC will make POLY_3 the active and the output will be: URJ = -3.94

-1

+ 3.94 * 101 * 25 + 2.65 * 10-2 * 252 - 1.11 * 10-4 * 253 = 1000 µV

This voltage is to be added to the TC voltage (5000 + 1000), and the resulting temperature will be:

4.18 + 2.26 * 10

-2

6000 + 1.41 * 10

-7

6000

+ 1.50

-11

6000

- 1.35

-15

6000

= 146.3 °C

See 2.9.3 Custom polynomial linearisation, Description for formula and further details.

temp.

Intern temp.

INTERN_TEMP

EXTERNAL_RJ_VALUE

LIN

R.J. Comp.

RJ_TYPE

Input

INPUT1

INPUT2

Linearisation

+ LIN

LIN

RJ_TEMP

(none)

Arithmetic

+,-, redund.

SECONDARY_VALUE_1

SECONDARY_VALUE_2

PRIMARY_VALUE

SENSOR_MEAS_TYPE

BIAS_1

BIAS_2

LIN

LIN_TYPE_1/2

SENSOR_CONNECTION_1/2 COMP_WIRE_1/2

Process

calibration

Min/Max hold

min/ max

MIN_SENSOR_VALUE_1/2 MAX_SENSOR_VALUE_1/2

RTDX_FACTOR_1/2

CAL_POINT_HI_1/2 CAL_ACTUAL_HI_1/2

CABLE_RES1/2

RJ_COMP_WIRE

SENSOR_WIRE_CHECK_1/2

SENSOR_WIRE_CHECK_RJ

CUSTOM_TC_.. TAB_X_Y_VALUE

CUSTOM_RTD_..

(Channel_4)

(Channel_1)

(Channel_2)

(Channel_3)

AI_TRANSDUCER and PR_CUST_LIN

schematic

CAL_POINT_LO_1/2 CAL_ACTUAL_LO_1/2

2.7 AI_Transducer and PR_CUST_LIN Block, Schematic

2.8 AI_TRANSDUCER Block Parameter List

2.8.1 Sensor characterising parameters

Rel.

Parameter

PRIMARY_VALUE_UNIT

LIN_TYPE

UPPER_SENSOR_LIMIT

LOWER_SENSOR_LIMIT

LOWER_SENSOR_LIMIT_2

UPPER_SENSOR_LIMIT_2

LIN_TYPE_2

Index FFDescription Type Store

Selects the unit code of the PRIMARY_VALUE and other values. 1000 = K (Kelvin) 1001 = °C (degree Celsius) 1002 = °F (degree Fahrenheit) 1003 = Rk (Rankine)

1240 = V (volt) 1243 = mV millivolt 1244 = µV microvolt 1281 = Ohm Ohm 1284 = kOhm kiloOhm 1342 = % (percent)

Select the type of sensor 1: 0 = no linearisation 1 = linearisation table 100 = RTD Pt10 a = 0.003850 (IEC 60751) 101 = RTD Pt50 a = 0.003850 (IEC 60751) 102 = RTD Pt100 a = 0.003850 (IEC 60751)) 103 = RTD Pt200 a = 0.003850 (IEC 60751)) 104 = RTD Pt500 a = 0.003850 (IEC 60751)) 105 = RTD Pt1000 a = 0.003850 (IEC 60751) 106 = RTD Pt10 a = 0.003916 (JIS C1604-81) 107 = RTD Pt50 a = 0.003916 (JIS C1604-81) 108 = RTD Pt100 a = 0.003916 (JIS C1604-81) 122 = RTD Ni50 a = 0.006180 (DIN 43760) 123 = RTD Ni100 a = 0.006180 (DIN 43760) 124 = RTD Ni120 a = 0.006180 (DIN 43760) 125 = RTD Ni1000 a = 0.006180 (DIN 43760) 126 = RTD Cu10 a = 0.004270 127 = RTD Cu100 a = 0.004270

128 = TC Type B, Pt30Rh-Pt6Rh (IEC 584) 129 = TC Type C (W5), W5-W26Rh (ASTM E 988) 130 = TC Type D (W3), W3-W25Rh (ASTM E 988) 131 = TC Type E, Ni10Cr-Cu45Ni (IEC 584) 133 = TC Type J, Fe-Cu45Ni (IEC 584) 134 = TC Type K, Ni10Cr-Ni5 (IEC 584) 135 = TC Type N, Ni14CrSi-NiSi (IEC 584) 136 = TC Type R, Pt13Rh-Pt (IEC 584) 137 = TC Type S, Pt10Rh-Pt (IEC 584) 138 = TC Type T, Cu-Cu45Ni (IEC 584) 139 = TC Type L, Fe-CuNi (DIN 43710) 140 = TC Type U, Cu-CuNi (DIN 43710) 240 = Custom-defined TC 241 = Custom-defined RTD 242 = Custom-defined RTD PtX a=0.003850 243 = Custom-defined RTD NiX a=0.006180 (X factor of Ni1) 244 = Custom-defined RTD CuX a=0.004270 (X factor of Cu1) 245 = Custom-defined RTD PtX a=0.003916 (X factor of Pt1)

Physical upper limit function of sensor1 (e.g. Pt 100 = 850°C) and input range.

The unit of VALUE_UNIT.

Physical lower limit function of sensor1 (e.g. Pt 100 =

-200°C) and input range.

The unit of LOWER_SENSOR_LIMIT is the PRIMARY_ VALUE_UNIT.

Physical lower limit function of sensor2 (e.g. Pt 100 =

-200°C) and input range.

The unit of LOWER_SENSOR_LIMIT is the PRIMARY_ VALUE_UNIT.

Physical upper limit function of sensor2 (e.g. Pt 100 = +850°C) and input range.

The unit of UPPER_SENSOR_LIMIT is the PRIMARY_ VALUE_UNIT.

Select the type of sensor 2:

See LIN_TYPE for selection and supported types

UPPER_SENSOR_LIMIT is the PRIMARY_

Size

RO /

byte

Un-

signed

(X factor of Pt1)

Float N 4 RO 850

Float N 4 RO -200

Float N 4 RO 850

signed

SRC 2 R/W

Un-

SRC 1 R/W

Un-

SRC 1 R/W 102

Min. Max. Default

R/W

1001

(°C)

102

(Pt100)

AI_TRANSDUCER Block Parameter List

2.8.2 RTD / Resistor specific parameters

Rel.

Parameter

SENSOR_CONNECTION

COMP_WIRE1

COMP_WIRE2

SENSOR_CONNECTION_2

CABLE_RES1

CABLE_RES2

RTDX_FACTOR_1

RTDX_FACTOR_2

Index FFDescription Type Store

Connection to sensor 1, select for 2-, 3- and 4-wire connection. Ignored if sensor 1 is not a resistive sensor. Defined codes:

0 = 2 wires 1 = 3 wires 2 = 4 wires

Value in OHM to compensate line resistance when

Sensor 1 is a resistive sensor, connected with 2 wires. Value in OHM to compensate line resistance when

Sensor 2 is a resistive sensor, connected with 2 wires. Connection to sensor 2, select for 2-, 3- and 4-wire

connection. Ignored if sensor 2 is not a resistive sensor.

Defined codes: 0 = 2 wires 1 = 3 wires

For 3- or 4-wire resistance measurements. Indicates the measured cable resistance in the wire

connected to terminal 3. For 3-wire measurements it is multiplied by 2

For 4-wire resistance measurements.

Indicates the measured cable resistance in the wire connected to terminal 6.

Indicates the X factor for custom defined PtX, NiX, CuX

for LIN_TYPE

Indicates the X factor for custom defined PtX, NiX, CuX

for LIN_TYPE_2

Size

RO /

byte

Un-

signed

Float SRC 4 R/W 0 100 0

signed

Float D 4 RO 0,0

signed

SRC 1 R/W 1

Un-

SRC 1 R/W 0

Un-

SRC 2 R/W 100

Un-

SRC 2 R/W 100

Min. Max. Default

R/W

2.8.3 Thermocouple specific parameters

Rel.

Parameter

RJ_TEMP

RJ_TYPE

EXTERNAL_RJ_VALUE

RJ_COMP_WIRE

Index FFDescription Type Store

Reference junction temperature. The unit of RJ_TEMP is the PRIMARY_VALUE_UNIT. If PRIMARY_VALUE_

UNIT is no temperature unit (e.g. mV) RJ_TEMP is stated in °C.

Select reference junction from internal to fixed value. Ignored for sensors which are not thermocouple types. Defined codes: 0 = No reference: Compensation is not used (e.g. for TC type B). 1 = Internal: Reference junction temperature is measured by the device itself, via an internally mounted sensor. 2 = External: The fixed value EXTERNAL_RJ_

VALUE is used for compensation. The reference junction must be kept at a constant temperature (e.g. by a reference junction thermostat). 3 = Sensor, 2-w.: Reference junction temperature is measured by external 2-wire con nected Pt100 sensor. 4 = Sensor, 3-w: Reference junction temperature is measured by external 3-wire con nected Pt100 sensor.

Fixed temperature value of an external reference junction. The unit of EXTERNAL_RJ_VALUE is the

PRIMARY_VALUE_UNIT. If PRIMARY_VALUE_UNIT is no temperature unit (e.g. mV) EXTERNAL_RJ_VALUE is stated in °C.

Value in OHM to compensate line resistance when

External RJ sensor, connected with 2 wires is used.

Size

RO /

byte

Float D 4 RO 0

Un-

signed

Float SRC 4 R/W

Float SRC 4 R/W 0 100 0

SRC 1 R/W 0

Min. Max. Default

R/W

-40

(°C)

135 (°C)

AI_TRANSDUCER Block Parameter List

2.8.4 Output conditioning parameters

Rel.

Parameter

SENSOR_MEAS_TYPE

BIAS_1

BIAS_2

MAX_SENSOR_VALUE_1

MIN_SENSOR_VALUE_1

MAX_SENSOR_VALUE_2

MIN_SENSOR_VALUE_2

Index FFDescription Type Store

Mathematical function to calculate PRIMARY_VALUE (PV). Defined codes: 0: PV = SV_1 1: PV = SV_2 128: PV = SV_1 - SV_2 Difference 129: PV = SV_2 - SV_1 Difference 192: PV = ½ * (SV_1 + SV_2) Average 193: PV = ½ * (SV_1 + SV_2) Average, but SV_1 or

SV_2 if the other is wrong (input_fault_x 220: PV = SV_1, SV_2 not available. Used for single sensor applications. If selected, Sensor 2 will not be measured. All parameters exclusively related to Sensor 2 are not available, and no alarms will be generated for Sensor 2. 221: PV = SV_1, but SV_2 if SV_1 is wrong (INPUT_FAULT_1 222: PV = SV_2, but SV_1 if SV_2 is wrong (INPUT_FAULT_2

Bias that can be algebraically added to process value

of sensor 1, SV1. The unit of BIAS_1 is the PRIMARY_VALUE_UNIT.

Bias that can be algebraically added to process value

of sensor 2, SV2. The unit of BIAS_2 is the PRIMARY_VALUE_UNIT.

Holds the maximum SECONDARY_VALUE_1. The unit

is defined in SECONDARY_VALUE_1.

Holds the minimum SECONDARY_VALUE_1. The unit is

defined in

SECONDARY_VALUE_1. 30 See. MAX_SENSOR_VALUE_1 Float N 4 R/W 0 31 See. MIN_SENSOR_VALUE_1 Float N 4 R/W 0

≠0)

Size

RO /

byte

≠0)

Un-

signed

Float SRC 4 R/W 0

Float N 4 R/W 0

SRC 1 R/W 220

Min. Max. Default

R/W

2.8.5 Output parameters

Rel.

Parameter

PRIMARY_VALUE

SECONDARY_VALUE_1

SECONDARY_VALUE_2

INTERN_TEMP

Index FFDescription Type Store

Process value, function determined by SENSOR_

MEAS_TYPE of SECONDARY_VALUE_1/2.

The unit of PRIMARY_VALUE is the PRIMARY_VALUE_

UNIT.

FF Channel 1 Output. PA Channel 280

Process value connected to sensor 1 corrected by

BIAS_1. The unit of SECONDARY_VALUE_1 is the

PRIMARY_VALUE_UNIT.

FF Channel 2 Output, PA Channel 282

Process value connected to sensor 2 corrected by

BIAS_2. The unit of SECONDARY_VALUE_2 is the

PRIMARY_VALUE_UNIT.

FF Channel 3 Output, PA Channel 283

Internal electronics temperature. The unit of INTERN_

TEMP is the PRIMARY_VALUE_UNIT. If PRIMARY_

VALUE_UNIT is no temperature unit (e.g. mV) INTERN_

TEMP is stated in °C.

FF Channel 4 Output, PA Channel 341

Size

RO /

byte

DS-33 D 5 RO 0

Min. Max. Default

R/W

2.8.6 Diagnostic parameters

Rel.

Parameter

INPUT_FAULT_GEN

INPUT_FAULT_1

INPUT_FAULT_2

RJ_FAULT

HW_ERROR

Index FFDescription Type Store

Input malfunction: Diagnosis object for errors that con

cern all values

0 = device OK

Bit: 23

0 = Rj error

1 = Hardware error

2 – 4 = reserved

5 – 7 = manufacturer-specific

Input malfunction: Diagnosis object for errors that con

cern SV_1

0 = Input OK

Bit:

0 = underrange 24

1 = overrange

2 = lead breakage

3 = short circuit

4 – 5 = reserved

6 – 7 = manufacturer-specific

Input malfunction: Diagnosis object for errors that con

cern SV_2 25

0 = Input OK

Bit definition see INPUT_FAULT_1

Input malfunction: Diagnosis object for errors that con

cern RJ sensor.

0 = Input OK

Bit: 43

0 = underrange

1 = overrange

2 = lead breakage

3 = short circuit

Diagnostic bit value indicating hardware status

0 = hardware OK

Bit:

0 = Input power supply error

1 = Input initialisation error 62

2 = Input communication error

3 = Internal temperature sensor error

4 = Device not factory calibrated

5 – 6 = reserved

7 = Watchdog initiated cold start occurred

AI_TRANSDUCER Block Parameter List

Un-

signed

Un-

signed

Un-

signed

Un-

signed

Un-

signed

Size

RO /

byte

D 1 RO 0

Min. Max. Default

R/W

2.8.7 Sensor error detection parameters

Rel.

Parameter

SENSOR_WIRE_CHECK_1

SENSOR_WIRE_CHECK_2

SENSOR_WIRE_CHECK_RJ

Index FFDescription Type Store

Enables lead breakage and short circuit detection for Sensor 1. List of valid values: 0 = Lead breakage and short circuit detection enable.

1 = Lead breakage detection enable, short circuit detection disable. 2 = Lead breakage detection disable, short circuit detection enable. 3 = Lead breakage and short circuit detection disable.

Enables lead breakage and short circuit detection for

Sensor 2. Valid values: see SENSOR_WIRE_CHECK_1.

Enables lead breakage and short circuit detection for

RJ Sensor. Valid values: see SENSOR_WIRE_CHECK_1.

Un-

signed

Un-

signed

Un-

signed

Size

RO /

byte

SRC 1 R/W 3

Min. Max. Default

R/W

AI_TRANSDUCER Block Parameter List

2.8.8 Sensor calibration, Description Sensor calibration is a very useful function when the transmitter output needs to be adjusted to the sen sor signal, e.g. when the temperature sensor does not correspond to the ideal values for the selected temperature range. The results depend on the accuracy of the calibrator or reference equipment. In the following a temperature sensor calibration is described, however the principle can be used for all input types.

SENSOR_CAL_METHOD_1 / 2 defines the use of either “Factory trim Standard” (the factory defined val ues calculated according to the valid norms) or “User Trim Standard” (the sensor calibrated values) in the transmitter for sensor 1 and 2 respectively. During sensor calibration SENSOR_CAL_METHOD_1 / 2 must be set to “Factory trim Standard” = 103.

The sensor calibration function in T53 will change the slope of the linarisation curve so the curve is ad

justed to the connected sensor. To obtain accurate temperature measurement in the range e.g. 0...100 °C apply to the sensor a temperature e.g. of 5 °C as the low temperature and e.g. 95 °C as the high tem perature through a precise temperature calibrator.

At sensor calibration the succeeding procedure must be followed precisely (Example: sensor 1):

1. SENSOR_CAL_METHOD_1 = 103

2. Apply the low temperature of the calibrator to the sensor

3. CAL_POINT_LO_1 = 5.00 (type in the low temperature of the calibrator)

4. CAL_ACTUAL_LO_1 = 1.00 (The measurement of the deviation starts by typing in a random value)

5. Apply the high temperature of the calibrator to the sensor

6. CAL_POINT_HI_1 = 95.00 (type in the high temperature of the calibrator)

7. CAL_ACTUAL_HI_1 = 1.00 (The measurement of the deviation starts by typing in a random value and T53 calculates the curve slope according to the measured deviations.)

8. SENSOR_CAL_METHOD_1 = 104 (the sensor calibration just carried out is used)

2.8.9 Sensor Calibration Parameters

Rel.

Parameter

CAL_POINT_LO_1

CAL_ACTUAL_LO_1

CAL_POINT_HI_1

CAL_ ACTUAL _HI_1

SENSOR_CAL_METHOD_1

SENSOR_CAL_LOC_1

SENSOR_CAL_DATE_1

SENSOR_CAL_WHO_1

CAL_POINT_LO_2

CAL_ACTUAL_LO_2

Index FFDescription Type Store

The low calibration value applied to sensor 1

The value from either a calibrator or a reference equip ment.

Entering any value will force the device to automatically

measure and store the actual low point value. Must be entered with the applied CAL_POINT_LO_1 value

The high calibration value applied to sensor 1

The value from either a calibrator or a reference equip ment.

Entering any value will force the device to automatically

measure and store the actual high point value. Must be entered with the applied CAL_POINT_HI_1 value

Enables or disables the last sensor calibration for sensor 1

103 = Factory trim standard (calibration values disabled) 104 = User trim standard (calibration values enabled)

51 The last location of the calibrated sensor

52 The last date on which the calibration was performed

The name of the person responsible for the last sensor

calibration The low calibration value applied to sensor 2

The value from either a calibrator or a reference equip ment.

Entering any value will force the device to automatically

measure and store the actual low point value. Must be entered with the applied CAL_POINT_LO_2 value

Size

RO /

byte

Float SRC 4 R/W -10

Float SRC 4 R/W 10

Un-

signed

OCTET_ STRING

signed

OCTET_ STRING

Float SRC 4 R/W -10

Float SRC 4 R/W

SRC 1 R/W

SRC 32 R/W ” ”

Un-

SRC 7 R/W

SRC 32 R/W ” ”

Min. Max. Default

R/W

103

0,0,0,0, 1,1,103

-10

Parameter

CAL_POINT_HI_2

CAL_ACTUAL_HI_2

SENSOR_CAL_METHOD_2

SENSOR_CAL_LOC_2

SENSOR_CAL_DATE_2

SENSOR_CAL_WHO_2

Rel.

Index FFDescription Type Store

The high calibration value applied to sensor 2

The value from either a calibrator or a reference equip

Float SRC 4 R/W 10

ment. Entering any value will force the device to automatically

measure and store the actual high point value. Must be

Float SRC 4 R/W 10

entered with the applied CAL_POINT_HI_2 value Enables or disables the last sensor calibration for

sensor 2

103 = Factory trim standard (calibration values disabled) 104 = User trim standard (calibration values enabled)

59 The last location of the calibrated sensor

The last date on which the calibration was performed

Un-

signed

OCTET_ STRING

signed

SRC 1 R/W 103

SRC 32 R/W » »

Un-

SRC 7 R/W

The name of the person responsible for the last sensor

calibration

OCTET_ STRING

SRC 32 R/W » »

Size byte

RO /

Min. Max. Default

R/W

0,0,0,0, 1,1,103

2.9 PR_CUST_LIN Block Parameter List

2.9.1 Linear interpolation linearisation, Description LinType 1 = “Linearisation Table” generates a customer specific linear interpolation linearisation. Linear interpolation linearisation can be used on mV, ohmic and potentiometer signals.The linear interpolation linearisation is defined by straight lines drawn between the entered X / Y (input / output) coordinates. The linearisation table must consist of 10 to 50 coordinate sets. The X values of the coordinates must be entered in ascending order. The lowest and highest X values function as the lower and the upper lim it respectively. All X values must be entered as µV, Ohm or % for Voltage, Resistance or Potentiometer measurements in that order. The table output will be converted to actual chosen PRMARY_VALUE_UNIT (Example: 1000 / 3000 as X / Y values: output will read 3,00 if PRIMARY_VALUE_UNIT is set to “mV” and 1 mV is connected to input).

2.9.2 Linear Interpolation Linearisation, Parameter List.

Parameter

TAB_MIN_NUMBER

Rel.

Index FFDescription Type Store

34 Minimum number of linearisation points allowed (10)

Un-

signed 8N 1 RO 10

Size byte

RO /

Min. Max. Default

R/W

TAB_MAX_NUMBER

TAB_ACTUAL_NUMBER

TAB_X_Y_VALUE1

TAB_X_Y_VALUE2

TAB_X_Y_VALUE3

TAB_X_Y_VALUE4

TAB_X_Y_VALUE5

TAB_X_Y_VALUE6

TAB_X_Y_VALUE7

TAB_X_Y_VALUE8

TAB_X_Y_VALUE9

TAB_X_Y_VALUE10

TAB_X_Y_VALUE11

TAB_X_Y_VALUE12

TAB_X_Y_VALUE13

TAB_X_Y_VALUE14

TAB_X_Y_VALUE15

TAB_X_Y_VALUE16

TAB_X_Y_VALUE17

TAB_X_Y_VALUE18

TAB_X_Y_VALUE19

TAB_X_Y_VALUE20

TAB_X_Y_VALUE21

TAB_X_Y_VALUE22

35 Maximum number of linearisation points allowed (50)

36 Number of linearisation points in the linearisation table.

37 Linearisation x,y coordinate 1

38 Linearisation x,y coordinate 2

39 Linearisation x,y coordinate 3

40 Linearisation x,y coordinate 4

41 Linearisation x,y coordinate 5

42 Linearisation x,y coordinate 6

43 Linearisation x,y coordinate 7

44 Linearisation x,y coordinate 8

45 Linearisation x,y coordinate 9

46 Linearisation x,y coordinate 10

47 Linearisation x,y coordinate 11

48 Linearisation x,y coordinate 12

49 Linearisation x,y coordinate 13

50 Linearisation x,y coordinate 14

51 Linearisation x,y coordinate 15

52 Linearisation x,y coordinate 16

53 Linearisation x,y coordinate 17

54 Linearisation x,y coordinate 18

55 Linearisation x,y coordinate 19

56 Linearisation x,y coordinate 20

57 Linearisation x,y coordinate 21

58 Linearisation x,y coordinate 22

Un-

signed 8N 1 RO 50

Un-

signed 8SRC 1 R/W 11

Float array

SRC 8 R/W 0, 0

SRC 8 R/W

SRC 8 R/W 0, 0

1000,

100

2000,

200

3000,

300

4000,

400

5000,

500

6000,

600

7000,

700

8000,

800

9000,

900

10000,

1000

Parameter

TAB_X_Y_VALUE23

TAB_X_Y_VALUE24

TAB_X_Y_VALUE25

TAB_X_Y_VALUE26

TAB_X_Y_VALUE27

TAB_X_Y_VALUE28

TAB_X_Y_VALUE29

TAB_X_Y_VALUE30

TAB_X_Y_VALUE31

TAB_X_Y_VALUE32

TAB_X_Y_VALUE33

TAB_X_Y_VALUE34

TAB_X_Y_VALUE35

TAB_X_Y_VALUE36

TAB_X_Y_VALUE37

TAB_X_Y_VALUE38

TAB_X_Y_VALUE39

TAB_X_Y_VALUE40

TAB_X_Y_VALUE41

TAB_X_Y_VALUE42

TAB_X_Y_VALUE43

TAB_X_Y_VALUE44

TAB_X_Y_VALUE45

TAB_X_Y_VALUE46

TAB_X_Y_VALUE47

TAB_X_Y_VALUE48

TAB_X_Y_VALUE49

TAB_X_Y_VALUE50

Rel.

Index FFDescription Type Store

59 Linearisation x,y coordinate 23

60 Linearisation x,y coordinate 24

61 Linearisation x,y coordinate 25

62 Linearisation x,y coordinate 26

63 Linearisation x,y coordinate 27

64 Linearisation x,y coordinate 28

65 Linearisation x,y coordinate 29

66 Linearisation x,y coordinate 30

67 Linearisation x,y coordinate 31

68 Linearisation x,y coordinate 32

69 Linearisation x,y coordinate 33

70 Linearisation x,y coordinate 34

71 Linearisation x,y coordinate 35

72 Linearisation x,y coordinate 36

73 Linearisation x,y coordinate 37

74 Linearisation x,y coordinate 38

75 Linearisation x,y coordinate 39

76 Linearisation x,y coordinate 40

77 Linearisation x,y coordinate 41

78 Linearisation x,y coordinate 42

79 Linearisation x,y coordinate 43

80 Linearisation x,y coordinate 44

81 Linearisation x,y coordinate 45

82 Linearisation x,y coordinate 46

83 Linearisation x,y coordinate 47

84 Linearisation x,y coordinate 48

85 Linearisation x,y coordinate 49

86 Linearisation x,y coordinate 50

Float array

SRC 8 R/W 0, 0

Size byte

RO /

Min. Max. Default

R/W

2.9.3 Custom polynomial linearisation, Description Polynomial linearisation can be used on mV and ohmic input signals. Polynomial linearisation is execut ed according to the function f(x) = a

+ a

x2 + a

x3 + a

x4, in which a0...a4 equal the coefficients

x + a for a fourth order polynomial and x equals the input value. This function requires that the user can ob tain or calculate the coefficients of up to 5 fourth order polynomials. Various computer programs such as Math Cad can calculate these coefficients. If the preceding text is unfamiliar one should use the function table linearisation in case of customer specific linearisation. LIN_TYPE 240 = “Custom defined TC” generates a customer specific polynomial linearisation. The func tion is primarily suitable for specific thermo elements but also for millivolt signals if the user can accept to enter the input and the output values of the polynomial in µV and °C respectively. LIN_TYPE 241 = “Custom defined RTD” generates a customer specific polynomial linearisation. The

function is particularly suitable for specific RTD sensors but also for non-linear ohmic signals if the user can accept to enter the input and output values of the polynomials in ohm and °C respectively. Please remember that polynomial linearisation is absolute. The output value is calculated continuously according to the applied input value and the function formula. The max. input range can be limited pre cisely to the input range in which the polynomial linearisation will be used. The PRIMARY_VALUE_UNIT defines the unit of the values provided by the AI_TRANSDUCER BLOCK. The parameter OUT_SCALE in the AI block can scale the values and change the unit to e.g. mV or ohm.

2.9.4 Custom Polynomial Linearisation, Parameter List

Parameter

CUSTOM_TC_NAME

CUSTUM_TC_POLY_ COUNT

CUSTOM_TC_MIN_IN

Rel.

Index FFDescription Type Store

13 Name of Custom defined TC ( LIN_TYPE = 240)

Number of 4. order polynomial parts for Custom

defined TC

15 Minimum input limit in µV for Custom defined TC Float SRC 4 R/W 0

OCTET_ STRING

Un-

signed

Size

RO /

byte

SRC 20 R/W

SRC 1 R/W 5

Min. Max. Default

R/W

”Linear TC;

no RJ”

CUSTOM_TC_MIN_OUT

CUSTOM_TC_MAX_OUT

CUSTOM_TC_POLY_1

CUSTOM_TC_POLY_2

CUSTOM_TC_POLY_3

CUSTOM_TC_POLY_4

CUSTOM_TC_POLY_5

CUSTOM_TC_RJ_POLY

CUSTOM_RTD_NAME

CUSTUM_RTD_POLY_ COUNT

CUSTOM_RTD_MIN_IN

CUSTOM_RTD_MIN_OUT

CUSTOM_RTD_MAX_OUT

CUSTOM_RTD_POLY_1

CUSTOM_RTD_POLY_2

CUSTOM_RTD_POLY_3

CUSTOM_RTD_POLY_4

CUSTOM_RTD_POLY_5

Minimum usable output value in °C of polynomial set

for Custom defined TC Maximum usable output value in °C of polynomial set

for Custom defined TC Polynomial part 1 of Custom defined TC converting µV

to °C. Consisting of: maximum input value in µV, a4..a0 polynomial coefficients.

Polynomial part 2 of Custom defined TC converting µV

to °C. Consisting of: maximum input value in µV, a4..a0 polynomial coefficients.

Polynomial part 3 of Custom defined TC converting µV

to °C. Consisting of: maximum input value in µV, a4..a0 polynomial coefficients.

Polynomial part 4 of Custom defined TC converting µV

to °C. Consisting of: maximum input value in µV, a4..a0 polynomial coefficients.

Polynomial part 5 of Custom defined TC converting µV

to °C. Consisting of: maximum input value in µV, a4..a0 polynomial coefficients.

RJ Polynomial part of custom defined TC, converting

°C to µV.: a3..a0 coefficients.

24 Name of Custom defined RTD ( LIN_TYPE = 241)

Number of 4. order polynomial parts for Custom

defined RTD

26 Minimum input limit in Ohm’s for Custom defined RTD Float SRC 4 R/W 0

Minimum usable output value of polynomial set for

Custom defined RTD Maximum useable output value of polynomial set for

Custom defined RTD Polynomial part 1 of Custom defined RTD convert

ing Ohm to °C. Consisting of maximum input value in Ohms, a4..a0 polynomial coefficients.

Polynomial part 2 of Custom defined RTD convert

ing Ohm to °C. Consisting of maximum input value in Ohms, a4..a0 polynomial coefficients.

Polynomial part 3 of Custom defined RTD convert

ing Ohm to °C. Consisting of maximum input value in Ohms, a4..a0 polynomial coefficients.

Polynomial part 4 of Custom defined RTD convert

ing Ohm to °C. Consisting of maximum input value in Ohms, a4..a0 polynomial coefficients.

Polynomial part 5 of Custom defined RTD convert

ing Ohm to °C. Consisting of maximum input value in Ohms, a4..a0 polynomial coefficients.

Float SRC 4 R/W 0

Float SRC 4 R/W 1500,00

6*Float SRC 24 R/W

4*Float SRC 16 R/W 0;0;0;0

OCTET_ STRING

signed

Float SRC 4 R/W 0

Float SRC 4 R/W 100,00

6*Float SRC 24 R/W

SRC 20 R/W

Un-

SRC 1 R/W 5

30000;

0; 0; 0;

0,01; 0 60000;

0; 0; 0;

0,01; 0 90000;

0; 0; 0;

0,01; 0

120000;

0; 0; 0;

0,01; 0

150000;

0; 0; 0;

0,01; 0

”Linear

RTD”

2000;

0; 0; 0;

0,01; 0

4000;

0; 0; 0;

0,01; 0

6000;

0; 0; 0;

0,01; 0

8000;

0; 0; 0;

0,01; 0 10000;

0; 0; 0;

0,01; 0

2.10 PR_CUST_PRIV Block Reserved Parameter List

2.10.1 Description, PR_CUST_PRIV Block The Block is private and reserved.

3.0 Analogue Input Blocks

T53 has 2 Analogue Input Blocks to be configured individually. The constrcution of the Blocks is in line with the standards from FOUNDATION Fieldbus and Profibus Nutzerorgani sation respectively, and producer specific parameters have not been added. However, the Analogue Input Blocks for Fieldbus Foundation and Profibus are dissimilar due to the parameter differences.

3.1 Analogue Input Blocks, Fieldbus Foundation

3.2 Overview The AI block takes the manufacturer’s input data, selected by channel number, and makes it available to other function blocks at its output.

3.3 Analogue Input Block Schematic

3.4 Description Transducer scaling (XD_SCALE) is applied to the value from the channel to produce the FIELD_VAL in percent. The XD_SCALE units code must match the channel units code (if one exists), or the block will remain in O/S mode after being configured. A block alarm for units mismatch will be generated. The OUT_SCALE is normally the same as the transducer, but if L_TYPE is set to Indirect or Ind Sqr Root, OUT_SCALE determines the conversion from FIELD_VAL to the output. PV and OUT always have identical scaling.

OUT_SCALE provides scaling for PV. The PV is always the value that the block will place in OUT if the mode is Auto. If Man is allowed, someone may write a value to the output. The status will prevent any attempt at closed loop control using the Man value, by setting the Limit value to Constant. The LOW_CUT parameter has a corresponding “Low cutoff” option in the IO_OPTS bit string. If the option bit is true, any calculated output below the low cutoff value will be changed to zero. This is only useful for zero-based measurement devices, such as flow. The PV filter, whose time constant is PV_FTIME, is applied to the PV, and not the FIELD_VAL.

Equations: FIELD_VAL = 100*(channel value - EU@0%) / (EU@100% - EU@0%) [XD_SCALE] Direct: PV = channel value Indirect: PV = (FIELD_VAL/100) * (EU@100% - EU@0%) + EU@0% [OUT_SCALE] Ind Sqr Root: PV = sqrt(FIELD_VAL/100) * (EU@100% - EU@0%) + EU@0% [OUT_SCALE]

3.5 Supported Modes O/S, Man and Auto.

3.6 To enable the Simulation mode The hardware lock for the simulation mode is a reed switch mounted in the T53 transmitter. The reed switch can be activat

ed with a special designed magnet which is mounted on the bus connection terminals pin no. 1 and pin no. 2. Magnet type no. 12557596 can be ordered at WIKA.

3.7 Alarm Types Standard block alarm plus standard HI_HI, HI, LO, and LO_LO alarms applied to OUT.

3.8 Mode Handling Standard transition in and out of O/S. Standard transition from Man to Auto and back.

3.9 Status Handling The status values described in Output Parameter Formal Model of Part 1 apply, with the ex ception of the control sub-status values. The Uncertain - EU Range Violation status is always set if the OUT value exceeds the OUT_SCALE range, and no worse condition exists. The fol lowing options from STATUS_OPTS apply, where Limited refers to the sensor limits: Propagate Fault Forward Uncertain if Limited BAD if Limited Uncertain if Man mode

3.10 Initialisation The PV filter must be initialised, but other than that, no special initialisation is required. This is a pure calculation algorithm.

Parameter

ST_REV

TAG_DESC

STRATEGY

ALERT_KEY

MODE_BLK

BLOCK_ERR

3.11 Analogue Input Blocks Parameter List, Fieldbus Foundation

Rel.

Description Type Store

Index

The revision level of the static data associated with the func tion block. To support tracking changes in static parameter attributes, the associated block’s static revision parameter will

be incremented each time a static parameter attribute value is changed. Also, the associated block’s static revision parameter may be incremented if a static parameter attribute is written but the value is not changed.

2 The user description of the intended application of the block.

The strategy field can be used to identify grouping of blocks..

This data is not checked or processed by the block.

The identification number of the plant unit. This information

may be used in the host for sorting alarms, etc.

5 The actual, target, permitted, and normal modes of the block. DS-69 Mix 4 *

This parameter reflects the error status associated with the

hardware or software components associated with a block. It is a bit string, so that multiple errors may be shown.

Either the primary analog value for use in executing the func

tion, or a process value associated with it. May also be calcu lated from the READBACK value of an AO block.

Un-

signed

Octet

String

Un-

signed

Un-

signed

Bit

String

DS-65 D 5 RO

Size

RO /

byte

SRC 2 RO 0

SRC 32 R/W Spaces

SRC 2 R/W 0

SRC 1 R/W 1 255 0

D 2 RO

Min Max Default

R/W

1, 1, 25,

Parameter

OUT

SIMULATE

XD_SCALE

OUT_SCALE

GRANT_DENY

IO_OPTS

STATUS_OPTS

CHANNEL

L_TYPE

LOW_CUT

PV_FTIME

FIELD_VAL

UPDATE_EVT

BLOCK_ALM

ALARM_SUM

ACK_OPTION

ALARM_HYS

HI_HI_PRI

Rel.

Description Type Store

Index

The primary analog value calculated as a result of executing

the function.

DS-65 N 5 R/W

Size byte

Allows the transducer analog input or output to the block to be manually supplied when simulate is enabled. When simulation

is disabled, the simulate value and status track the actual value

DS-82

D 11 R/W Disable

and status. The high and low scale values, engineering units code, and

number of digits to the right of the decimal point used with the

DS-68 SRC 11 R/W 0-100%

value obtained from the transducer for a specified channel. The high and low scale values, engineering units code, and

number of digits to the right of the decimal point to be used in

displaying the OUT parameter and parameters which have the

DS-68 SRC 11 R/W 0-100%

same scaling as OUT. Options for controlling access of host computer and local con

trol panels to operating, tuning and alarm parameters of the

DS-70 SRC 2 R/W

block. Options which the user may select to alter input and output

block processing. Options which the user may select in the block processing of

status. The number of the logical hardware channel that is connected

to this I/O block. This information defines the transducer to be used going to or from the physical world.

Bit

String

Bit

String

Un-

signed

SRC 2 R/W 0

SRC 2 R/W 1 or 2

Determines if the values passed by the transducer block to the AI block may be used directly (Direct) or if the value is in

different units and must be converted linearly (Indirect), or with square root (Ind Sqr Root), using the input range defined by

Un-

signed

SRC 1 R/W 0

the transducer and the associated output range. Limit used in square root processing. A value of zero percent

of scale is used in block processing if the transducer value falls

below this limit, in % of scale. This feature may be used to

Float SRC 4 R/W 0

eliminate noise near zero for a flow sensor. Time constant of a single exponential filter for the PV, in sec

onds.

Float SRC 4 R/W 0

Raw value of the field device in percent of thePV range, with a

status reflecting the Transducer condition, before signal char-

DS-65 D 5 RO

acterization (L_TYPE) or filtering (PV_FTIME).

20 This alert is generated by any change to the static data. DS-73 D 14 RO

The block alarm is used for all configuration, hardware, con

nection failure or system problems in the block. The cause of the alert is entered in the subcode field. The first alert to become active will set the Active status in the Status attribute.

As soon as

DS-72

D 13 R/W

the Unreported status is cleared by the alert reporting task, another block alert may be reported without clearing the Active status, if the subcode has changed.

The current alert status, unacknowledged states, unreported

states, and disabled states of the alarms associated with the

DS-74 Mix 8 R/W

function block. Selection of whether alarms associated with the block will be

automatically acknowledged.

Bit

String

SRC 2 R/W 0

Amount the PV must return within the alarm limits before the

alarm condition clears. Alarm Hysteresis is expressed as a per-

Float SRC 4 R/W 0% 50% 0.5%

cent of the PV span .

Un-

25 Priority of the high high alarm.

signed 8SRC 1 R/W 0 15 0

RO /

Min Max Default

R/W

HI_HI_LIM

HI_PRI

HI_LIM

LO_PRI

LO_LIM

LO_LO_PRI

LO_LO_LIM

HI_HI_ALM

HI_ALM

LO_ALM

LO_LO_ALM

26 The setting for high high alarm in engineering units. Float SRC 4 R/W +INF

Un-

27 Priority of the high alarm.

signed 8SRC 1 R/W 0 15 0

28 The setting for high alarm in engineering units. Float SRC 4 R/W +INF

Un-

29 Priority of the low alarm.

signed 8SRC 1 R/W 0 15 0

30 The setting for the low alarm in engineering units. Float SRC 4 R/W -INF

Un-

31 Priority of the low low alarm.

signed 8SRC 1 R/W 0 15 0

32 The setting of the low low alarm in engineering units. Float SRC 4 R/W -INF 33 The status for high high alarm and its associated time stamp. DS-71 D 16 R/W 34 The status for high alarm and its associated time stamp. DS-71 D 16 R/W 35 The status of the low alarm and its associated time stamp. DS-71 D 16 R/W 36 The status of the low low alarm and its associated time stamp. DS-71 D 16 R/W

4.0 PID Control Block, Fieldbus Foundation

4.1 Introduction: T53 is fitted with a PID Control Block which can only be used in Fieldbus Foundation installa tions. The PID Block is constructed according to standard specifications outlined in Fieldbus Foundation and producer specific parameters have not been added. Please notice that the PID function is not specified in the Profibus Nutzerorganisation and thus cannot be used in Profibus installations.

4.2 Overview The PID block is key to many control schemes and is used almost universally, with the ex ception of PD, which is used when the process itself does the integration. As long as an error exists, the PID function will integrate the error, which moves the output in a direction to cor rect the error. PID blocks may be cascaded when the difference in process time constants of a primary and secondary process measurement makes it necessary or desirable.

4.3 Schematic:

4.4 Description The Process Value to be controlled is connected to the IN input. This value is passed through a filter whose time constant is PV_FTIME. The value is then shown as the PV, which is used in conjunction with the SP in the PID algorithm. A PID will not integrate if the limit status of IN is constant. A full PV and DV alarm sub-function is provided. The PV has a status, although it is a Contained parameter.

This status is a copy of IN’s status unless IN is good and there is a PV or block alarm.

The full cascade SP sub-function is used, with rate and absolute limits. There are additional control options which will cause the SP value to track the PV value when the block is in an actual mode of IMan, LO, Man or ROut. Limits do not cause SP-PV tracking.

There is a switch for BYPASS, which is available to the operator if the Bypass Enable con trol option is true. Bypass is used in secondary cascade controllers that have a bad PV. The Bypass Enable option is necessary because not all cascade control schemes will be stable if BYPASS is true. BYPASS can only be changed when the block mode is Man or O/S. While it is set, the value of SP, in percent of range, is passed directly to the target output, and the value of OUT is used for BKCAL_OUT. When the mode is changed to Cas, the upstream block is requested to initialize to the value of OUT. When a block is in Cas mode, then on the transition out of bypass, the upstream block is requested to initialize to the PV value, regard less of the »Use PV for BKCAL_OUT« option.

GAIN, RESET, and RATE are the tuning constants for the P, I, and D terms, respectively. Gain is a dimensionless number. RESET and RATE are time constants expressed in seconds. There are existing controllers that are tuned by the inverse value of some or all of them, such as proportional band and repeats per minute. The human interface to these parame ters should be able to display the user’s preference. The Direct Acting control option, if true, causes the output to increase when the PV exceeds the SP. If false, the output will decrease when the PV exceeds the SP. It will make the difference between positive and negative feed back, so it must be set properly, and never changed while in an automatic mode. The setting of the option must also be used in calculating the limit state for BKCAL_OUT.

The output supports the feed forward algorithm. The FF_VAL input brings in an external val ue which is proportional to some disturbance in the control loop. The value is converted to percent of output span using the values of parameter FF_SCALE. This value is multiplied by the FF_GAIN and added to the target output of the PID algorithm. If the status of FF_VAL is Bad, the last usable value will be used, because this prevents bumping the output. When the status returns to good, the block will adjust its integral term to maintain the previous output.

The output supports the track algorithm.

There is an option to use either the SP value after limiting or the PV value for the BKCAL_ OUT value..

4.5 Supported Modes O/S, IMan, LO, Man, Auto, Cas, RCas, and ROut.

4.6 Alarm Types Standard block alarm plus standard HI_HI, HI, DV_HI, DV_LO, LO, and LO_LO alarms ap plied to PV.

4.7 Mode Handling Standard transition in and out of O/S.

4.8 Status Handling Standard, plus the following things for the control selector If Not selected is received at BKCAL_IN, the PID algorithm should make necessary adjustments to prevent windup.

4.9 Initialization Standard.

4.10 PID Control Block Parameter List

Parameter

ST_REV

TAG_DESC

STRATEGY

ALERT_KEY

MODE_BLK

BLOCK_ERR

OUT

PV_SCALE

OUT_SCALE

GRANT_DENY

CONTROL_OPTS

STATUS_OPTS

PV_FTIME

BYPASS

CAS_IN

SP_RATE_DN

SP_RATE_UP

SP_HI_LIM

SP_LO_LIM

Rel.

Description Type Store

Index

Size byte

The revision level of the static data associated with the function block. To support tracking changes in static parameter attributes, the associated block’s static revision

parameter will be incremented each time a static parameter attribute value is changed. Also, the associated block’s

Un-

signed

SRC 2 RO 0

static revision parameter may be incremented if a static parameter attribute is written but the value is not changed.

The user description of the intended application of the

block.

The strategy field can be used to identify grouping of

blocks. This data is not checked or processed by the block.

Contains the identification number of the plant unit. It helps

to identify the location (plant unit) of an event.

Contains the current mode and the permitted and normal

mode of the block. This parameter reflects the error status associated with the

hardware or software components associated with a block. It is a bit string, so that multiple errors may be shown.

Octet

String

SRC 32 R/W spaces

Un-

signed

SRC 2 R/W 0

Un-

signed

SRC 1 R/W 1 255 0

DS-69 Mix 4 Mix O/S

Bit

String

D 2 RO

Either the primary analog value for use in executing the

function, or a process value associated with it. May also be

DS-65 D 5 RO

calculated from the READBACK value of an AO block.

8 The analog setpoint of this block. DS-65 N 5 R/W

The primary analog value calculated as a result of executing

the function.

DS-65 N 5 R/W

The high and low scale values, engineering units code, and number of digits to the right of the decimal point to be used

in displaying the PV parameter and parameters which have

DS-68 SRC 11 R/W 0-100%

the same scaling as PV. The high and low scale values, engineering units code, and

number of digits to the right of the decimal point to be used

in displaying the OUT parameter and parameters which

DS-68 SRC 11 R/W 0-100%

have the same scaling as OUT. Options for controlling access of host computer and local

control panels to operating, tuning and alarm parameters of

DS-70 SRC 2 R/W

the block. Options which the user may select to alter the calculations

done in a control block. Options which the user may select in the block processing

of status. The primary input value of the block, required for blocks

that filter the input to get the PV. Time constant of a single exponential filter for the PV, in

seconds.

Bit

String

SRC 2 R/W 0

Bit

SRC 2 R/W 0

DS-65 N 5 R/W

Float SRC 4 R/W Positive 0

The normal control algorithm may be bypassed through this parameter. When bypass is set, the setpoint value (in per cent) will be directly transferred to the output. To prevent a

bump on transfer to/from bypass, the setpoint will automati cally be initialized to the output value or process variable,

Un-

signed

SRC 1 R/W 1 2 0

8 respectively, and the path broken flag will be set for one execution.

This parameter is the remote setpoint value, which must

come from another Fieldbus block, or a DCS block through

DS-65 N 5 R/W

a defined link. Ramp rate at which downward setpoint changes are acted

on in Auto mode, in PV units per second. If the ramp rate is set to zero, then the setpoint will be used immediately. For

control blocks, rate limiting will apply only in Auto. For out

Float SRC 4 R/W Positive +INF

put blocks, rate limiting will apply in Auto, Cas, and RCas modes.

Ramp rate at which upward setpoint changes are acted on in Auto mode, in PV units per second. If the ramp rate is set to

zero, then the setpoint will be used immediately. For con

Float SRC 4 R/W Positive +INF trol blocks, rate limiting will apply only in Auto. For output blocks, rate limiting will apply in Auto, Cas, and RCas modes.

The setpoint low limit is the lowest setpoint operator entry

that can be used for the block. The setpoint high limit is the highest setpoint operator entry

that can be used for the block.

Float SRC 4 R/W

RO /

Min. Max. Default

R/W

PV_SCALE

±10%

OUT_SCALE

±10%

PV_SCALE

±10%

PV_SCALE

±10%

100

Parameter

GAIN

RESET

BAL_TIME

RATE

BKCAL_IN

OUT_HI_LIM

OUT_LO_LIM

BKCAL_HYS

BKCAL_OUT

RCAS_IN

ROUT_IN

SHED_OPT

RCAS_OUT

ROUT_OUT

TRK_SCALE

TRK_IN_D

TRK_VAL

FF_VAL

FF_SCALE

FF_GAIN

UPDATE_EVT

BLOCK_ALM

ALARM_SUM

ACK_OPTION

ALARM_HYS

HI_HI_PRI

Rel.

Description Type Store

Index

Dimensionless value used by the block algorithm in calcu

lating the block output.

Float SRC 4 R/W 0

Size byte

RO /

Min. Max. Default

R/W

24 The integral time constant, in seconds per repeat. Float SRC 4 R/W Positive +INF

This specifies the time for the internal working value of bias or ratio to return to the operator set bias or ratio, in sec onds. In the PID block, it may be used to specify the time

constant at which the integral term will move to obtain bal

Float SRC 4 R/W Positive 0

ance when the output is limited and the mode is Auto, Cas, or RCas.

26 Defines the derivative time constant, in seconds. Float SRC 4 R/W Positive 0

The value and status from a lower block’s BKCAL_OUT that

is used to prevent reset windup and to initialize the control

DS-65 N 5 R/W

loop.

28 Limits the maximum output value. Float SRC 4 R/W

29 Limits the minimum output value. Float SRC 4 R/W

The amount that the output must change away from its out

put limit before the limit status is turned off, expressed as a

Float SRC 4 R/W 0 50 0.5

OUT_SCALE

±10%

OUT_SCALE

±10%

percent of the span of the output. The value and status required by an upper block’s BKCAL_

IN so that the upper block may prevent reset windup and

DS-65 D 5 RO

provide bumpless transfer to closed loop control. Target setpoint and status provided by a supervisory Host

to a analog control or output block. Target output and status provided by a Host to the control

block for use as the output (ROut mode).

Defines action to be taken on remote control device time

out.

DS-65 N 5 R/W

Un-

signed

SRC 1 R/W 0

Block setpoint and status after ramping - provided to a

supervisory Host for back calculation and to allow action to

DS-65 D 5 RO

be taken under limiting conditions or mode change. Block output and status - provided to a Host for back

calculation in ROut mode and to allow action to be taken

DS-65 D 5 RO

under limited conditions or mode change. The high and low scale values, engineering units code, and

number of digits to the right of the decimal point, associ-

DS-68 SRC 11 R/W 0-100%

ated with TRK_VAL. This discrete input is used to initiate external tracking of the

block output to the value specified by TRK_VAL. This input is used as the track value when external tracking

is enabled by TRK_IN_D.

DS-66 N 2 R/W

DS-65 N 5 R/W

40 The feed forward value and status. DS-65 N 5 R/W

The feedforward input high and low scale values, engineer

ing units code, and number of digits to the right of the deci

DS-68 SRC 11 R/W 0-100%

mal point. The gain that the feed forward inpt is multiplied by before it

is added to the calculated control output.

Float SRC 4 R/W 0

43 This alert is generated by any change to the static data. DS-73 D 14 RO

The block alarm is used for all configuration, hardware, con

nection failure or system problems in the block. The cause of the alert is entered in the subcode field. The first alert to become active will set the Active status in the Status

attribute. As soon as the Unreported status is cleared by

DS-72

D 13 R/W

the alert reporting task, another block alert may be reported without clearing the Active status, if the subcode has changed.

The current alert status, unacknowledged states, unreported

states, and disabled states of the alarms associated with

DS-74 Mix 8 R/W

the function block. Selection of whether alarms associated with the block will

be automatically acknowledged. 0 = Auto Ack Disabled; 1 = Auto Ack Enabled.

Bit

String

SRC 2 R/W 0 1 0

Amount the PV must return within the alarm limits before

the alarm condition clears. Alarm Hysteresis is expressed as

Float SRC 4 R/W 0 50 0.5

a percent of the PV span.

Un-

48 Priority of the high high alarm.

signed 8SRC 1 R/W 0 15 0

100

HI_HI_LIM

HI_PRI

49 The setting for high high alarm in engineering units. Float SRC 4 R/W

Un-

50 Priority of the high alarm.

signed 8SRC 1 R/W 0 15 0

PV_

SCALE

+INF +INF

Parameter

HI_LIM

LO_PRI

Rel.

Description Type Store

Index

Size byte

51 The setting for high alarm in engineering units. Float SRC 4 R/W

Un-

52 Priority of the low alarm.

signed 8SRC 1 R/W 0 15 0

RO /

Min. Max. Default

R/W

PV_

SCALE

+INF +INF

LO_LIM

LO_LO_PRI

LO_LO_LIM

DV_HI_PRI

DV_HI_LIM

DV_LO_PRI

DV_LO_LIM

HI_HI_ALM

HI_ALM

LO_ALM

LO_LO_ALM

DV_HI_ALM

DV_LO_ALM

53 The setting for the low alarm in engineering units. Float

4 R/W -INF

Un-

SRC

54 Priority of the low low alarm.

signed 8SRC 1 R/W 0 15 0

SRC

55 The setting of the low low alarm in engineering units. Float

4 R/W -INF

Un-

56 Priority of the high deviation alarm.

The setting of the high deviation alarm limit in engineering

units.

signed 8SRC 1 R/W 0 15 0

Float SRC 4 R/W 0

Un-

58 Priority of the low deviation alarm.

The setting of the low deviation alarm limit in engineering

units. The status for high high alarm and its associated time

stamp.

signed 8SRC 1 R/W 0 15 0

Float SRC 4 R/W

DS-71 D 16 R/W

61 The status for high alarm and its associated time stamp. DS-71 D 16 R/W

62 The status of the low alarm and its associated time stamp. DS-71 D 16 R/W

The status of the low low alarm and its associated time

stamp. The status and time stamp associated with the high devia

tion alarm. The status and time stamp associated with the low devia

tion alarm.

DS-71 D 16 R/W

-PV

span

PV_

SCALE

PV_

SCALE

span

0 -INF

-INF

+INF

5.0 Link Active Scheduler (LAS)

5.1 Introduction: T53 features a LAS function which is only available in Fieldbus Foundation installations. Please note that the LAS function has not been specified by the Profibus Nutzerorganisation and is therefore not available in Profibus installations.

5.2 Overview

5.3 Description All links have one and only one Link Active Scheduler (LAS). The LAS operates as the bus ar biter for the link. The LAS does the following:

Any device on the link may become the LAS, as long as it is capable. The devices that are capable of becoming the LAS are called link master devices. All other devices are referred to as basic devices. When a segment first starts up, or upon failure of the existing LAS, the link master devices on the segment bid to become the LAS. The link master that wins the bid begins operating as the LAS immediately upon completion of the bidding process. Link mas ters that do not become the LAS act as basic devices. However, the link masters can act as LAS backups by monitoring the link for failure of the LAS and then bidding to become the LAS when a LAS failure is detected.

• recognizes and adds new devices to the link.

• removes non-responsive devices from the link.

• distributes Data Link (DL) and Link Scheduling (LS) time on the link. Data Link Time is a network-wide time periodicallydistributed by the LAS to synchronize all device clocks on the bus. Link Scheduling time is a link-specific time represented as an offset from Data Link Time. It is used to indicate when the LAS on each link begins and repeats its schedule. It is used by system management to synchronize function block execution with the data transfers scheduled by the LAS.

• polls devices for process loop data at scheduled transmission times.

• distributes a priority-driven token to devices between scheduled transmissions.

Only one device can communicate at a time. Permission to communicate on the bus is con trolled by a centralized token passed between devices by the LAS. Only the device with the token can communicate. The LAS maintains a list of all devices that need access to the bus. This list is called the “Live List.”

Two types of tokens are used by the LAS. A time-critical token, compel data (CD), is sent by the LAS according to a schedule. A non-time critical token, pass token (PT), is sent by the LAS to each device in ascending numerical order according to address.

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WIKA T53 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual