Rockwell Automation 1203 User Manual

Allen-Bradley

Bulletin 1203

Serial Communications

User

Module
(Series B)

RS232/422/483 (Using DF1 Protocol)
DH485

(Cat. No. 1203–GD2, –GK2, –GM2)

Manual

Important User Information

Solid state equipment has operational characteristics differing from
those of electromechanical equipment. “Safety Guidelines for the
Application, Installation and Maintenance of Solid State Controls”
(Publication SGI-1.1) describes some important differences between
solid state equipment and hard–wired electromechanical devices.
Because of this difference, and also because of the wide variety of
uses for solid state equipment, all persons responsible for applying
this equipment must satisfy themselves that each intended
application of this equipment is acceptable.

In no event will the Allen-Bradley Company be responsible or liable
for indirect or consequential damages resulting from the use or
application of this equipment.

The examples and diagrams in this manual are included solely for
illustrative purposes. Because of the many variables and
requirements associated with any particular installation, the
Allen-Bradley Company cannot assume responsibility or liability for
actual use based on the examples and diagrams.

No patent liability is assumed by Allen-Bradley Company with
respect to use of information, circuits, equipment, or software
described in this manual.

Reproduction of the contents of this manual, in whole or in part,
without written permission of the Allen-Bradley Company is
prohibited.

Throughout this manual we use notes to make you aware of safety
considerations.

ATTENTION: Identifies information about practices
or circumstances that can lead to personal injury or

!

Attentions help you:

death, property damage, or economic loss.

• identify a hazard

• avoid the hazard

• recognize the consequences

Important: Identifies information that is especially important for

successful application and understanding of the product.

PLC, PLC–2, PLC–3, PLC–5, SLC, SLC 500, PanelView, RediPANEL, Data Highway Plus, and Dataliner are trademarks of
Allen-Bradley Company, Inc.
IBM is a registered trademark of International Business Machines, Incorporated.

Preface

Table of Contents

Who Should Use this Manual P–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Purpose of this Manual P–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents of this Manual P–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Documentation P–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Terms and Abbreviations P–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Conventions P–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Firmware Support P–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Precautions P–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Device Compatibility P–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Allen–Bradley Support P–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local Product Support P–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Product Assistance P–4. . . . . . . . . . . . . . . . . . . . . . . .

Product Description

Installation

Chapter 1

Chapter Objectives 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SCANport Device Compatibility 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Switches 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2

Chapter Objectives 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting Module Configuration Switches 2–1. . . . . . . . . . . . . . . . . . . . .

Switch SW1 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DF1/DH–485 Address Selection 2–4. . . . . . . . . . . . . . . . . . . . . .

DF1 Address Selection 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch SW2 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switch SW3 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting the Serial Communications Module 2–10. . . . . . . . . . . . . . . . .

Enclosed Style Serial Communications Module Dimensions 2–12. . . . . .

Connecting Cables 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1746-BAS Module Serial Connections 2–13. . . . . . . . . . . . . . . . . .

IBM PC Compatible Serial Connections 2–14. . . . . . . . . . . . . . . . .

1747–AIC Link Coupler Serial Connections 2–14. . . . . . . . . . . . . .

PLC5 Channel 0 Serial Connections 2–15. . . . . . . . . . . . . . . . . . .

SCANport Link Connection 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1305 Drive 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1336 PLUS and 1336 FORCE 2–17. . . . . . . . . . . . . . . . . . . . . .

1394 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SMP 3 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Supply Connections 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contentsii

SCANport Datalink
Operation

Configuring and Interfacing

Block Transfer Emulation
Instructions

Chapter 3

Chapter Objectives 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SCANport Datalinks 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4

Chapter Objectives 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Communications Module Data Table Structure 4–1. . . . . . . . . . .

Supported PCCC Command List 4–2. . . . . . . . . . . . . . . . . . . . . .

Data Table Structure 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuration Examples 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DF1 Messaging with a PLC–5/80 Example 4–9. . . . . . . . . . . . . . .

DF1 Messaging with a 1746–BAS Module Example 4–1 1. . . . . . . .

DH–485 Messaging with a SLC5/03 Interface 4–13. . . . . . . . . . . . .

Chapter 5

Chapter Objectives 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Block Transfer Status Word 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scattered Parameter Value Read 5–2. . . . . . . . . . . . . . . . . . . . . . . . .

Scattered Parameter Value Write 5–4. . . . . . . . . . . . . . . . . . . . . . . . .

Product ID Number Read 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameter Read Full 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameter Value Read 5–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameter V alue W rite 5–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EE Memory Functions 5–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fault Clear/Reset 5–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fault Queue Entry Read Full 5–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fault Queue Size 5–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Trip Fault Queue Number 5–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting

Specifications

Chapter 6

Chapter Objectives 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LED Locations 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LED Troubleshooting Table 6–2. . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 7

Chapter Objectives 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Specifications 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Module Compatibility 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface

Preface

Read this preface to familiarize yourself with the rest of the manual.
This preface covers the following topics:

• who should use this manual

• the purpose of this manual

• terms and abbreviations

• conventions used in this manual

• safety precautions

• Allen–Bradley support

Who Should Use this Manual

Purpose of this Manual

Use this manual if you are responsible for setting up and servicing
the Serial Communications Module. You must have previous
experience with and a basic understanding of communications
terminology, configuration procedures, required equipment, and
safety precautions.

To use this Serial Communications Module efficiently, you must be
able to program and operate serial communications devices, as well
as have a basic understanding of the parameter settings and functions
of the device to which you are communicating.

This manual is an installation and user guide for the Serial
Communications Module. The Serial Communications Module is
available for products that include the SCANport communications
port.

This manual provides you with the following:

• an overview of the Serial Communications Module

• the procedures you need to install, configure, and troubleshoot the

Serial Communications Module

For information on specific features of Allen–Bradley products
mentioned within this manual, refer to the user manual for that
product.

Important:You should read this manual in its entirety before

installing, operating, servicing, or initializing the Serial
Communications Module.

1203–5. 5 September 1995

P–2

Contents of this Manual

Chapter Title Contents

Describes the purpose, background, and scope of

Preface

this manual. Also specifies the audience for whom
this manual is intended.

1 Product Description

2 Installation

3

4

5

6 Troubleshooting

7 Specifications

SCANport Datalink
Operation

Configuring and
Interfacing

Block Transfer Emulation
Instructions

Explains the Serial Communications Module’s
features, configuration, and diagnostics.

Provides procedures for mounting, connecting
power, configuring switches, cabling, and
connecting hardware.

Provides information for configuring SCANport
device datalinks and datalink operation.

Provides information about addressing, information
transfer, and sample programs.

Provides information for using the block transfer
emulation instructions.

Explains how to interpret and correct problems with
your Serial Communications Module.

Provides environmental, electrical, and
communications specifications.

Related Documentation

The following documents contain additional information concerning
Allen–Bradley SLCt and PLC products. To obtain a copy, contact
your local Allen–Bradley office or distributor.

For Read This Document

Information about the DH–485 network
Additional information about setting up the DH–485 network on

your SLC 500
A complete listing of current Allen–Bradley documentation,

including ordering instructions. Also indicates whether the
documents are available on CD–ROM or in multi–languages.

A glossary of industrial automation terms and abbreviations Allen–Bradley Industrial Automation Glossary AG–7.1
Information about the MSG block Instruction Set Reference 6200–6.4.11
Information about configuring the PLC–5 channel 0 hardware Hardware Installation Manual 1785–6.6.1
Information about configuring the PLC–5 channel 0 driver Software Configuration and Maintenance 6200–6.4.6

1203–5.5 September 1995

Data Highway/Data Highway Plus/DH–485
Communication Protocol and Command Set

SLC 500 Modular Hardware Style

Allen–Bradley Publication Index SD499

Document

Number

1770–6.5.16
1747–NI002,

Series A

Preface P–3

Terms and Abbreviations

Conventions

The following terms and abbreviations are specific to this product.
For a complete listing of Allen–Bradley terminology, refer to the
Allen–Bradley Industrial Automation Glossary, Publication Number
ICCG–7.1. In this manual, we refer to the:

• Variable Frequency AC Drive (Bulletin 1305, 1336 FORCE,

1336 PLUS, 1395, 1557, SMC, SMC Plus, or SMC dialog) as
the drive or SCANport device.

• Programmable Logic Controller as the Programmable Controller

or PLC.

• Earth Ground as GND.

The following conventions are used throughout this manual:

• Bulleted lists such as this one provide information, not procedural

steps.

• Numbered lists provide sequential steps or hierarchical

information.

• Italic type is used for emphasis.

• Text in this font indicates words or phrases you should type.

Firmware Support

Safety Precautions

This manual supports communications module firmware versions

2.xx (the “xx” designator may vary). Features that work with
specific firmware versions will be denoted as such.

ATTENTION: Only personnel familiar with
SCANport devices and associated machinery should

!

!

plan or implement the installation, start–up,
configuration, and subsequent maintenance of the serial
communications module. Failure to comply may result
in personal injury and/or equipment damage.

ATTENTION: This module contains Electrostatic
Discharge (ESD) sensitive parts and assemblies. Static
control precautions are required when installing,
testing, servicing, or repairing this assembly.
Component damage may result if ESD control
procedures are not followed. If you are not familiar
with static control procedures, refer to Allen–Bradley
Publication 8000–4.5.2, Guarding Against Electrostatic
Damage or any other applicable ESD protection
handbook.

1203–5.5 September 1995

P–4

Serial Device Compatibility

Allen–Bradley Support

This Serial Communications Module is intended for use with devices
that communicate via the following protocols:

Hardware Standard Communications Protocol

RS–232 DF1
RS–422 DF1
RS–485 DF1
DH–485 DH–485

Allen–Bradley offers support services worldwide, with over 75
Sales/Support Offices, 512 authorized Distributors, and 260
authorized Systems Integrators located throughout the United States
alone, plus Allen–Bradley representatives in every major country in
the world.

Local Product Support

Contact your local Allen–Bradley representative for:

• sales and order support

• product technical training

• warranty support

• support service agreements

Technical Product Assistance

If you need to contact Allen–Bradley for technical assistance, please
review the information in the Troubleshooting chapter first. Then
call your local Allen–Bradley representative.

1203–5.5 September 1995

Product Description

Chapter

1

Chapter Objectives

Module Description

In this chapter, you will read about:

• Serial Communications Module features

• the location of configuration switches

The Serial Communications Module is an optional interface device
designed to provide a direct digital link between serial
communications devices and any device that uses SCANport. The
current list of products that use SCANport includes: 1305, 1336
PLUS, 1336 FORCE, 1394, SMP3 controllers, and 1557 medium
voltage drives. The module connects to these products via
SCANport.

The Serial Communications Module is available in both Open style
(Figure 1.1) and Enclosed (Figure 1.2) type configurations. The
Open style module mounts inside certain drives, depending on drive
size. The Enclosed module mounts independently and can be used
with any SCANport device. The following table provides more
information about the Open and Enclosed styles.

Designation Enclosure Power Supply Source Used With

Open Style Open PC Board Supplied by the drive 1336 PLUS*

Enclosed IP30 24V DC separately supplied or

120/240V AC separately supplied

* 7.5HP and higher sizes only, excluding the AQF and BRF catalog number drives
** 7.5HP and higher sizes with Standard Adapter board only
*** analog 1394 only

1336 FORCE**

1394***

1336 PLUS

1336 FORCE

Other SCANport products

1305

1394

SMP3

1203–5.5 September 1995

1–2 Product Description

SCANport Device Compatibility

The SCANport Serial Communications Module is compatible with
the following Allen–Bradley devices:

Device Firmware Revision

1336 PLUS All

1336 FORCE All

1305 Micro Drive 2.0 or newer

SMC
SMP
1394
1557

1203–5.5 September 1995

Figure 1.1
Open Style Communications Module

SW1.1 – SW1.2 = Protocol select
SW1.3 – SW1.8 = Adapter address

1–3Product Description

J4

1
2
3

SW1

4
5
6
7
8

SW2.1 – SW2.3 = Baud rate selection
SW2.4 = Parity enable
SW2.5 = Parity sense (even/odd)
SW2.6 = Stop bits
SW2.7 = Point-to-point/multi-drop
SW2.8 = CRC/BCC check

SW3.1 = Logic command/status and

reference/feedback
SW3.2 = Datalink A settings
SW3.3 = Datalink B settings
SW3.4 = Datalink C settings
SW3.5 = Datalink D settings
SW3.6 = Duplicate message detection
SW3.7, SW3.8 = Application timeout

default value

TX (Adapter transmit) when flashing
Serial Status

1. LED off: adapter power removed

2. LED flashing green: link OK, off–line

3. LED solid green: link OK, on–line

4. LED flashing red: was on–line, now off–line

5. LED solid red: fault

1
2
3
4
5
6
7
8

1
2
3
4
5
6
7
8

SW2

SW3

LED Indicators

Serial

Communications

Module

J2

9-Pin D-shell

SCANport Status

1. LED off: adapter power removed

2. LED flashing green: link OK, not connected

3. LED solid green: link OK, connected

4. LED flashing red: was connected, now not connected

5. LED solid red: fault

RX (Adapter receive)
when flashing

AB0394C

1203–5.5 September 1995

1–4 Product Description

Serial channel

D-shell connector

Figure 1.2
Enclosed Style Serial-to-SCANport Communications Module

SCANport
connector

Power

connection

Diagnostic

LEDs

TX

Serial Status

Switch SW3
– Logic command/status and

reference/feedback
– Datalink A, B, C, D settings
– Application timeout

Default value
– Duplicate message detection

O

RX

SCANport Status

1. LED off: adapter power removed

2. LED flashing green: link OK, not connected

3. LED solid green: link OK, connected

4. LED flashing red: was connected, now not connected

5. LED solid red: fault

1. LED off: adapter power removed

2. LED flashing green: link OK, off–line

3. LED solid green: link OK, on–line

4. LED flashing red: was on–line, now off–line

5. LED solid red: fault

Switch SW2
– Baud rate selection
– Parity enable
– Parity sense (even/odd)
– Stop bits
– Point-to-point/multi-drop
– CRC/BCC check

Switch SW1
– Protocol select
– Adapter address

SW1SW2SW3818181

O

1203–5.5 September 1995

Bottom View

AB0415B

Open Style
Comm
Module

1336

1305

Micro

Drive

PLUS

Figure 1.3
Typical Serial Communications/SCANport Device Interconnect

.

.

.

Serial port

SCANport

1–5Product Description

PLC

PC

SMP 3

SCANport

Serial

Communications

Module

Serial

Communications

Module

Other serial

devices

Serial communications link

SLC 5/03

SLC 5/03 CPU

AB0396C

1203–5.5 September 1995

1–6 Product Description

Configuration Switches

Figure 1.4
Configuration Switches

Rocker switch

Open

The Serial Communications Module contains three DIP Switches:
SW1, SW2, and SW3 (Figure 1.1 and Figure 1.2). Switches are set
ON or OFF as shown in Figure 1.4. For a detailed explanation of
switch configuration, refer to Chapter 2.

Side view of typical

switches

Side switch

Open

Open (Off)

Switch designation as

shown in this manual

Off

Open

Close (On)

Open

On

AB0397A

1203–5.5 September 1995

Installation

Chapter

2

Chapter Objectives

Setting Module Configuration Switches

In this chapter, you will learn how to:

• set the module configuration switches

• mount the Serial Communications Module

• connect the cables

• connect the SCANport link

• connect the power supply

Read this chapter completely before you attempt to install or
configure your Serial Communications Module. Double check all
connections and option selections before you apply power.

Important: Switch selections take effect only on power–up. If you

change selections after power is applied, cycle the
power to use the new settings.

When making configuration changes to the Serial Communications
Module, use the addressing conventions of the PLC/SLC processor
or serial device through which you are communicating. In all cases,
each serial device must have a unique address that the target
processor can recognize.

"

ATTENTION: When changing the switch settings,
use a blunt, pointed instrument such as a ball point pen.

!

!

!

This publication describes switches as being either on or off. If the
switch assembly has the word OPEN printed on it, the word OPEN
corresponds to OFF (0).

If a switch is shown as gray, then that switch does not affect the
function being covered.

Do not use a pencil because the lead (graphite) of the
pencil may damage the switch assembly.

ATTENTION: Failure to check connections and
switch settings for compatibility with your application
when configuring the communications module could
result in personal injury and/or equipment damage due
to unintended or undesirable operation.

ATTENTION: It is recommended that when a system
is configured for the first time, you should disconnect
the motor from the machine or process during the
initial testing.

1203–5.5 September 1995

2–2 Installation

Factory Switch Settings

The following table shows the switch settings that are set at the
factory:

Switch Setting Communication Mode

SW3–8 Off Default application timeout disabled
SW3–7 Off

SW3–6 Off Duplicate message detection disabled
SW3–5 Off Datalink D disabled
SW3–4 Off Datalink C disabled
SW3–3 Off Datalink B disabled
SW3–2 Off Datalink A disabled

SW3–1 Off

SW2–8 Off BCC checksum
SW2–7 Off Point–to–point
SW2–6 Off 1 stop bit
SW2–5 Off Even parity (if enabled)
SW2–4 Off Parity disabled
SW2–3 On 9600 baud
SW2–2 On
SW2–1 Off

Logic command/status and

reference/feedback disabled

SW1–8 Off Module address = 1
SW1–7 Off
SW1–6 Off
SW1–5 Off
SW1–4 Off
SW1–3 On
SW1–2 Off RS–232 (DF1 protocol)
SW1–1 Off

These switches can be visually represented as follows:

SW3

O
–

87 654321

SW2

O
–

876543 21

SW1

O
–

87 654321

1203–5.5 September 1995

2–3Installation

Switch SW1

Switch SW1 is used to select:

• serial communications mode (RS–232/RS–422/RS–485/DH–485)

• Serial Communications Module address

SW1

O
F
F

O
N

87 65 43 21

Communications

Module Address

Protocol

Selection

AB0398B

Use SW1–1 and SW1–2 to select the communications protocol you
are using:

Switch Value

(Decimal)

0

1

2

3

SW1 Protocol

O
–

87 654321

O
–

87 654321

O
–

87 654321

O
–

87 654321

RS–232 (DF1 protocol)

RS–422 (DF1 protocol)

RS–485 (DF1 protocol)

DH–485

1203–5.5 September 1995

2–4 Installation

ÁÁÁÁ

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Use SW1–3, SW1–4, SW1–5, SW1–6, SW1–7, and SW1–8 to set
your address for the Serial Communications Module. The following
table provides the switch settings for selecting the serial device
addressing.

"

Module

Address

ÁÁ

(Decimal)

ÁÁ

0

1

ÁÁ

2

ÁÁ

3

4

ÁÁ

5

ÁÁ

6

ÁÁ

7

8

ÁÁ

9

ÁÁ

10

ÁÁ

11

12

ÁÁ

13

ÁÁ

14

ÁÁ

15

Note: If you are using the DH–485 communications mode, the
highest serial device address you can select is 31 (decimal).

DF1/DH–485 Address Selection

Module

Address

ÁÁÁ

(Octal)

0

ÁÁÁ

1

ÁÁÁ

2

ÁÁÁ

3

4

ÁÁÁ

5

ÁÁÁ

6

ÁÁÁ

7

10

ÁÁÁ

11

ÁÁÁ

12

ÁÁÁ

13

14

ÁÁÁ

15

ÁÁÁ

16

ÁÁÁ

17

SW1

ÁÁÁ

O
–

ÁÁÁ

87 654321

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
F
F

Á

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

O
N

Module

Address

ÁÁ

(Decimal)

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Module

Address

ÁÁÁ

(Octal)

20

ÁÁÁ

21

ÁÁÁ

22

ÁÁÁ

23

24

ÁÁÁ

25

ÁÁÁ

26

ÁÁÁ

27

30

ÁÁÁ

31

ÁÁÁ

32

ÁÁÁ

33

34

ÁÁÁ

35

ÁÁÁ

36

ÁÁÁ

37

ÁÁÁ

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

SW1

1203–5.5 September 1995

DF1 Address Selection

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

2–5Installation

Module

ÁÁ

Address

(Decimal)

ÁÁ

32

33

ÁÁ

34

ÁÁ

35

ÁÁ

36

37

ÁÁ

38

ÁÁ

39

ÁÁ

40

41

ÁÁ

42

ÁÁ

43

ÁÁ

44

45

ÁÁ

46

ÁÁ

47

ÁÁ

Module

ÁÁÁ

Address

(Octal)

ÁÁÁ

40

41

ÁÁÁ

42

ÁÁÁ

43

ÁÁÁ

44

45

ÁÁÁ

46

ÁÁÁ

47

ÁÁÁ

50

51

ÁÁÁ

52

ÁÁÁ

53

ÁÁÁ

54

55

ÁÁÁ

56

ÁÁÁ

57

ÁÁÁ

ÁÁÁ

SW1

ÁÁÁ

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

ÁÁÁ

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

Á

F

Á

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁÁÁ

ÁÁ

Address

(Decimal)

ÁÁ

Module

O

O

N

F

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

Module

ÁÁÁ

Address

(Octal)

ÁÁÁ

60

61

ÁÁÁ

62

ÁÁÁ

63

ÁÁÁ

64

65

ÁÁÁ

66

ÁÁÁ

67

ÁÁÁ

70

71

ÁÁÁ

72

ÁÁÁ

73

ÁÁÁ

74

75

ÁÁÁ

76

ÁÁÁ

77

ÁÁÁ

ÁÁÁ

SW1

ÁÁÁ

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

ÁÁÁ

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

O
–

876543 21

O

ÁÁÁ

–

876543 21

O
–

ÁÁÁ

876543 21

O
–

ÁÁÁ

876543 21

1203–5.5 September 1995

2–6 Installation

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Á

Switch SW2

Switch SW2 is used to select:

• baud rate

• parity

• number of stop bits

• point–to–point or multi–drop

• checksum mode (CRC or BCC)

SW2

O
F
F

O
N

876543 21

Parity

setting

Baud rate

selection

Stop bits

Point-to-point/multi-drop

Checksum mode

AB0399A

Use SW2–3, SW2–2, and SW2–1 to select the baud rate:

Switch Value

(Decimal)

0

ÁÁÁ

1

ÁÁÁ

2

ÁÁÁ

3

4

ÁÁÁ

5

ÁÁÁ

6

ÁÁÁ

7

SW2

O

ÁÁÁ

–

87 654321

O
–

ÁÁÁ

87 654321

O
–

ÁÁÁ

87 654321

O
–

87 654321

O

ÁÁÁ

–

87 654321

O
–

ÁÁÁ

87 654321

O
–

ÁÁÁ

87 654321

O
–

87 654321

Baud Rate

110

ÁÁÁÁ

300

ÁÁÁÁ

600

ÁÁÁÁ

1200

2400

ÁÁÁÁ

4800

ÁÁÁÁ

9600

ÁÁÁÁ

19200

1203–5.5 September 1995

"

Note: For DH–485, 1200, 2400, 9600, and 19200 are the allowed
baud rates. Selecting any other baud rate will cause the module to
indicate a fault. The module cannot operate in this state.

2–7Installation

"

Note: If you are using the DH–485 communications mode, setting
switches SW2–4, SW2–5, SW2–6. SW2–7, and SW2–8 have no
effect because this information is selected within the software.

Use SW2–5 and SW2–4 to set the parity:

SW2 Function

O
–

87 654321

O
–

87 654321

O
–

87 654321

Parity disabled

Even parity

Odd parity

Use SW2–6 to choose between 1 stop bit and 2 stop bits:

SW2 Function

O
–

87 654321

O
–

87 654321

1 stop bit

2 stop bits

Use SW2–7 to choose between point–to–point and multi–drop:

SW2 Function

O
–

87 654321

O
–

87 654321

Point–to–point

Multi–drop

Use SW2–8 to choose between BCC checksum mode and CRC
checksum mode:

SW2 Function

O
–

87 654321

O
–

87 654321

BCC Checksum

CRC Checksum

1203–5.5 September 1995

2–8 Installation

Switch SW3

Switch SW3 is used to select:

• logic command/status and reference/feedback

• datalinks (up to four datalinks)

• duplicate message detection

• application timeout default value

SW3

O
F
F

O
N

8765 43 21

detection

Datalink message

enables

Logic command/

status and reference/

feedback

AB0400B

Application timeout

default values

Duplicate message

Use SW3–1 to enable and disable the logic command/status and
reference/feedback messaging:

SW3 Function

O
–

87 654321

O
–

87 654321

Disable logic command/status and reference/feedback messaging.

Enable logic command/status and reference/feedback messaging.

Use SW3–2 to enable and disable Datalink A messaging:

SW3 Function

O
–

87 654321

O
–

87 654321

Disable Datalink A messaging.

Enable Datalink A messaging.

1203–5.5 September 1995

Use SW3–3 to enable and disable Datalink B messaging:

SW3 Function

O
–

87 654321

O
–

87 654321

Disable Datalink B messaging.

Enable Datalink B messaging.

Use SW3–4 to enable and disable Datalink C messaging:

SW3 Function

O
–

87 654321

O
–

87 654321

Disable Datalink C messaging.

Enable Datalink C messaging.

Use SW3–5 to enable and disable Datalink D messaging:

SW3 Function

O
–

87 654321

O
–

87 654321

Disable Datalink D messaging.

Enable Datalink D messaging.

Use SW3–6 to enable and disable duplicate message detection:

SW3 Duplicate Message Detection

O
–

87 654321

O
–

87 654321

Disable duplicate message detection.

Enable duplicate message detection.

2–9Installation

Use SW3–7 and SW3–8 to set the default application timeout value.
The default value is used for application timeout unless the user
writes a value to the application timeout address in the Serial
Communications Module data table. This address is N42:3. If
power is removed, the default value is reloaded during power–up.

SW3 Application Timeout Default Value

O
–

87 654321

O
–

87 654321

O
–

87 654321

O
–

87 654321

No timeout (disabled)

1 second

30 seconds

60 seconds

In DH–485 mode, the application timeout function is as follows:

• If the application timeout is set to zero, the module will not cause

the SCANport device to fault if DH–485 communications are
disrupted.

• If the application timeout is set to a non–zero value, the module

causes the SCANport device to fault if a DH–485 device that had
sent a message to data table N41 drops off the network.

1203–5.5 September 1995

2–10 Installation

Mounting the Serial Communications Module

The Serial Communications Module can be provided in three
mounting configurations:

• Open style board, factory installed in a drive (not available for all

drives)

• Open style board as a separate kit

• Enclosed style for panel mount or DIN rail mount

This section provides mounting information for the Open style kit
and the Enclosed style.

Open Style Communications Module Mounting Location (1336 PLUS

7.5–500HP)

1336 PLUS Main Control Board

Human

Interface

Module

Open Serial Communications

Module Mounts Here

U44

Memory

Module

J3

SCANport

Port 6

Mounting screws
& standoffs qty 4

U50 U54 U56

L OPTION

J7

TB2

J4

J9

TB1

AB0404C

1203–5.5 September 1995

Enclosed Style Communications Module Mounting Location
(1336 FORCE and 1336 PLUS Drives)

1336 FORCE

ESC SEL

JOG

Port Expander

SCANport 2

2–11Installation

234

5

Communications

Module

Optional

Male–Male

Cable

Communications

Module

1203–5.5 September 1995

2–12 Installation

Enclosed Style Serial Communications Module Dimensions

44mm
(1.75)

45mm

(1.8)

Top View

45mm

(1.8)

Enclosed Style Serial Communications Module Dimensions

DIN Rail

DIN Rail

Notes:

– The enclosure requires clearance at the top and bottom
for proper cooling. Additional space is required if you want
to access the DIP switches without removing the device.

– All dimensions are given in millimeters and (inches).

70mm

(2.7)

Back View

DIN Rail

Mounting Clip

DIN Rail

76mm

(3.0)

Front View

25mm

DIN Rail

25mm

(1)

(1)

123mm

(4.8)

DIN
Rail

Side View

AB0406A

1203–5.5 September 1995

2–13Installation

Connecting Cables

This section provides information that you need to connect the cables
to your Serial Communications Module.

Important: When connecting your cables, you should make sure

that the network is properly terminated. You should
also ground the shield at the end furthest from the Serial
Communications Module.

1746-BAS Module Serial Connections

Serial Communications Module to 1746-BAS Module

PRT1, PRT2 RS–232 Mode Port Connection Diagram

Communications Module

9-Pin D-Shell

N.C.
N.C.
N.C.
N.C.

1
2
3
4
5

COM
TX
RX
N.C.
COM

6
7

8
9

GND

1746-BAS Module

Port Connection

5

9

4

8

3

7

2

6

1

COM
DTR
TX
RX
N.C.

N.C.
CTS
RTS
DSR

AB0401B

Serial Communications Module to 1746-BAS Module

PRT1, PRT2 RS–422 Mode Port Connection Diagram

Communications Module

9-Pin D-Shell

COM

RXD –

RXD +

N.C.

SHIELD

N.C.

TXD +

TXD –

COM

Serial Communications Module to 1746-BAS Module

PRT1, PRT2 RS–485 Mode Port Connection Diagram

Communications Module

COM

N.C.

N.C.

N.C.

SHIELD

N.C.

TXD/RXD +

TXD/RXD –

COM

1

6

2

7

3

8

4

9

5

9-Pin D-Shell

1

6

2

7

3

8

4

9

5

GND

1746-BAS Module

Port Connection

5

9

4

8

3

7

2

6

1

1746-BAS Module

Port Connection

5

9

4

8

3

7

2

6

1

COM
N.C.
N.C.
RXD –
TXD –

COM
N.C.
N.C.
N.C.
TRXD –

TXD +
N.C.
N.C.
RXD +

AB0402B

TRXD +
N.C.
N.C.
N.C.

GND

AB0403B

1203–5.5 September 1995

2–14 Installation

IBM PC Compatible Serial Connections

RS–485/RS–422/RS–232 Communications Adapter to IBM AT

Compatible Computer RS–232 Serial Port Connection Diagram

Communications Module

9-Pin D-Shell

N.C.
N.C.
N.C.
N.C.

1

6

2

7

3

8

4

9

5

COM
TX
RX
N.C.
COM

GND

1747–AIC Link Coupler Serial Connections

Serial Communications Module to 1747–AIC Link Coupler

PRT1, PRT2 DH–485 Mode Port Connection Diagram

Communications Module

9-Pin D-Shell

N.C.
N.C.
N.C.
TRXD–

1

6

2

7

3

8

4

9

5

COM
N.C.
SHIELD
TRXD+
COM

IBM AT Compatible
Personal Computer

RS232 Serial Port

5

9

4

8

3

7

2
1

6

Phoenix 6–Point Connector

1747–AIC Link Coupler

TERM
A

B
COMMON
SHLD
CHS GND

Computer Internal

Jumper Connectors

COM

RI

DTR

CTS

TX

RTS

RX

DSR

DCD

AB0409D

1203–5.5 September 1995

PLC5 Channel 0 Serial Connections

Serial Communications Module to PLC5 RS–232

Serial Port Connection Diagram

2–15Installation

PLC5/20, 5/40, 5/60, 5/80

Channel 0

Communications Module

9-Pin D-Shell

N.C.
N.C.
N.C.
N.C.

1

6

2

7

3

8

4

9

5

COM

TX

RX
N.C.
COM

SLC 5/03 Port 1 Serial Connections

Communications Module

9-Pin D-Shell

1
2
3
4
5

6
7
8
9

10
11
12

13

14
15
16
17

18
19
20
21
22
23
24
25

C.GND
TXD
RXD
RTS
CTS
DER
SG.GND
DCD
RES
N.C.
RES
RES
N.C.

N.C.
RES
N.C.
RES
RES
N.C.
DTR
RES
N.C.
N.C.
RES
RES

SLC 5/03 RS–232 Port

AB0486B

COM

TX

RX
N.C.
COM

N.C.
N.C.
N.C.
N.C.

1

6

2

7

3

8

4

9

5

5

9

4

8

3

7

2
1

6

COM
DTR
TX
RX
DCD

N.C.
CTS
RTS
DSR

AB0411B

1203–5.5 September 1995

2–16 Installation

SCANport Link Connection

Cable Requirements

SCANport cables are available in either male–to–male or male–to–
female configuration. You can connect cables of up to 10 meters (33
feet) from the master to the SCANport device (A in the figure
below). If you use a Port Expander (as shown in the figure below),
you need to subtract the cable length from the master to the Port
Expander from the cable length used to connect the device to the
expander (B1 + C = a maximum of ten meters).

1305 Drive

An Allen-Bradley SCANport link cable is used to connect the Serial
Communications Module to the drive (as shown below).

SCANport Connection on Serial Communications Module

1305 Drive

Port Expander

Port 2

Port 1

C

234

5

B2

Optional

Male–Male

Cable

Communications

Module

A

Male–Female

Human Interface

Module

Optional

Cable

B1

Communications

Module

Important: The maximum cable distance between any two devices

cannot exceed 10 meters (33 feet) of cable.

For example: A + B1 + C ≤ 10 meters

A + B2 + C ≤ 10 meters
B1 + B2 ≤ 10 meters

AB0407B

1203–5.5 September 1995

2–17Installation

1336 PLUS and 1336 FORCE

Refer to the product manual for connection information. On larger
horsepower 1336 PLUS and FORCE drives with an open Serial
Communications Module mounted in the drive, you do not need a
separate SCANport cable connection.

Connection information for the 1336 PLUS and 1336 FORCE is
shown on page 2–11.

Important: The maximum cable distance between any two devices

cannot exceed 10 meters (33 feet) of cable.

1394

Refer to the product manual for connection information.

SMP 3

An Allen-Bradley SCANport cable is used to connect the Serial
Communications Module to an SMP3.

Important: The maximum cable distance between any two devices

cannot exceed 10 meters (33 feet) of cable.

SCANport Connection on Serial Communications Module

SMP3

Connection

Port 1

SMP 3

Port 2

Enclosed

Communications Module

Human Interface

Module

AB0408B

1203–5.5 September 1995

2–18 Installation

Power Supply Connections

The Enclosed Communications Module is powered from a separate
24V DC or 115/230V AC power supply (as shown below). With the
Open Style Communications Module board mounted in the drive, no
separate power supply connections are required.

Typical Power Supply Connection

115/230V

Typical

Connection

115V AC Hi
115V AC Low

GND

Communications Module

24V DC

Typical

Connection

L
N
G

Enclosed

24V

DC

Power

Supply

+
_

GND

Communications Module

+
–
G

Enclosed

AB0413B

1203–5.5 September 1995

Chapter

SCANport Datalink Operation

3

Chapter Objectives

SCANport Datalinks

In this chapter, you will read about SCANport Datalinks.

A Datalink is a type of pointer function used by some SCANport
devices to transfer parameter values to and from the SCANport
device. The Datalink function transfers parameters on a regular
schedule. Reading a parameter using the Datalink function (data
table N41) requires less time than reading a parameter using the
Parameter Value Read data table addresses (data tables N10 – N19 or
N50 – N89) because the module is kept updated on the parameter
value.

SCANport devices that support this function have a group of
parameters for Datalink configuration. These parameters are
identified as Datalink In and Datalink Out parameters. To enable the
Datalink functions, you need to:

1. Set the correct switch to Enable on SW3 of the Serial

Communications Module.

2. Configure the Datalink In and Datalink Out parameters in the

SCANport device.

Each Datalink consists of two 16-bit words of input and two 16-bit
words of output. You can configure each of the two input words to
write to a different destination parameter within the SCANport
device by setting the two Datalink In parameters for that Datalink to
the desired destination parameters. Similarly, you can configure each
of the two output words by setting the two Datalink Out parameters
for that Datalink.

Each Datalink switch on SW3 can enable or disable one Datalink.

• If a Datalink is enabled, the value of the parameters set into the

Datalink Out parameters is transferred to the Serial
Communications Module and the data sent by the Serial
Communications Module for the Datalink is transferred into the
parameters set into the Datalink In parameters.

• If a Datalink is not enabled, the data transferred to the SCANport

device for that Datalink is zero and the Serial Communications
Module ignores any data sent by the SCANport device.

If no Datalink In parameter is configured for an input word, that
word is ignored. If no Datalink Out parameter is configured for an
output word, the output word is undefined (usually set to zero).

1203–5.5 September 1995

3–2 SCANport Data Link Operation

1203–5.5 September 1995

Chapter

Configuring and Interfacing

4

Chapter Objectives

Serial Communications Module Data Table Structure

This chapter provides you with information on how the Serial
Communications Module communicates with a serial device. The
following topics are explained:

• Serial Communications Module data table structure

• configuration examples

ATTENTION: When you configure a system for the
first time, you should disconnect the motor from the

!

The Serial Communications Module maintains a data table that
allows the module to communicate with serial devices using standard
PCCC commands.

machine or the process during the initial testing.

1203–5.5 September 1995

4–2 Configuring and Interfacing

CMD Code FNC Code Command Name PLC Addressing Method

01h n/a Unprotected read PLC–2 address

06h 00h Echo n/a

01h Read diagnostic counters Variable (modified PLC–2 addresses)
02h Set variables (#ENQs, #NAKs, TIMEOUT) n/a
03h Identify host and some status n/a
04h Set timeout n/a
05h Set #NAKs n/a
06h Set #ENQs n/a
07h Reset diagnostic counters n/a
09h Read link parameters Logical address
0Ah Set link parameters Logical address

Supported PCCC Command List

The Serial Communications Module supports the following PCCC
Commands:

08h n/a Unprotected write PLC–2 address

0Fh 67h Typed write System address (4 possibilities)

68h Typed read System address (4 possibilities)
A1h

A2h

A9h

AAh

ABh

Protected typed logical read with two
address fields

Protected typed logical read with three
address fields

Protected typed logical write with two
address fields

Protected typed logical write with three
address fields

Protected typed logical write with four
address fields

File number/type/element number
File number/type/element

number/sub–element number
File number/type/element number
File number/type/element number/

sub–element number
File number/type/element number/

sub–element number/bit mask

1203–5.5 September 1995

Data Table Structure

The Serial Communications Module provides the following data
table structures for DF1 and DH–485.

The following table is the drive control table (binary file).

4–3Configuring and Interfacing

"

File

Address

B3:0 Logic Command B3:10 Logic Status
B3:1 Reference B3:11 Feedback
B3:2 Datalink A1 In (to Drive) B3:12 Datalink A1 Out (from Drive)
B3:3 Datalink A2 In (to Drive) B3:13 Datalink A2 Out (from Drive)
B3:4 Datalink B1 In (to Drive) B3:14 Datalink B1 Out (from Drive)
B3:5 Datalink B2 In (to Drive) B3:15 Datalink B2 Out (from Drive)
B3:6 Datalink C1 In (to Drive) B3:16 Datalink C1 Out (from Drive)
B3:7 Datalink C2 In (to Drive) B3:17 Datalink C2 Out (from Drive)
B3:8 Datalink D1 In (to Drive) B3:18 Datalink D1 Out (from Drive)
B3:9 Datalink D2 In (to Drive) B3:19 Datalink D2 Out (from Drive)

Description

File

Address

Description

Note: If you write to B3:0 through B3:9, you will write data to the
drive. If you read from B3:0 through B3:9, you will return the data
being currently sent to the drive. If you read from B3:10 through
B3:19, you will read data from the drive. If you write to B3:10
through B3:19, you will receive an error.

The following table is the drive control table (integer file).

File Address Description

N41:0 Logic Command/Status
N41:1 Reference/Feedback
N41:2 Datalink A1
N41:3 Datalink A2
N41:4 Datalink B1
N41:5 Datalink B2
N41:6 Datalink C1
N41:7 Datalink C2
N41:8 Datalink D1
N41:9 Datalink D2

"

Note: If you write to any location in N41, you will write data to the
drive. If you read from any location in N41, you will read data from
the drive.

1203–5.5 September 1995

4–4 Configuring and Interfacing

Important: The following two tables list the typical control and

status structure. You should refer to your drive manual
for the actual control and status structures for your
device.

The following are the bit definitions for B3:0 or writes to N41:0:

Bit Description Bit Description

00 Stop 10 Acceleration time
01 Start 11 Acceleration time
02 Jog 12 Deceleration time
03 Clear faults 13 Deceleration time
04 Direction 14 Reference select
05 Direction 15 Reference select
06 Local 16 Reference select
07 MOP increment 17 MOP decrement

The following are the bit definitions for B3:10 or reads from N41:0:

Bit Description Bit Description

00 Enabled 10 At speed
01 Running 11 Local
02 Command direction 12 Local
03 Actual direction 13 Local
04 Accelerating 14 Reference select
05 Decelerating 15 Reference select
06 Alarm 16 Reference select
07 Faulted 17 Reference select

1203–5.5 September 1995

4–5Configuring and Interfacing

The following is the data table structure for PLC–2 style addressing:

Parameter

Number

1 – 7039

1 – 7039

PLC–2 Style Address

Decimal (Octal)

512 + Parm #

(1000 to 16577)

(16600 to 167770 Status of last parameter write

7680 + Parm #

(17000 to 34577)
(34600 to 34677) Block transfer emulation area

(34700) Logic command/status
(34701) Reference/feedback
(34702) Datalink A1
(34703) Datalink A2
(34704) Datalink B1
(34705) Datalink B2
(34706) Datalink C1
(34707) Datalink C2
(34710) Datalink D1
(34711) Datalink D2
(34712) #ENQs
(34713) #NAKs
(34714) Message TIMEOUT (mS)
(34715) Application TIMEOUT (seconds)
(34716) Adapter series number (2=B)
(34717) Adapter firmware version (201=FRN2.01)

(34720) Maximum node address (DH–485)
(34721 to 37677) Reserved area for future expansion
(37700 to 37777) System area

Description of Location’s Purpose

Parameter value read

Parameter read full

"

Note: The address locations shown in this table are not limited to
PLC–2 commands and may be used by any device that can generate
them.

1203–5.5 September 1995

4–6 Configuring and Interfacing

The following is the data table structure for the Serial
Communications Module:

Parameter Number File Addresses Description of Location’s Purpose

1 – 999 N10:1 – 999

1000 – 1999 N11:0 – 999

– – value
8000 – 8999 N18:0 – 999 read or write
9000 – 9999 N19:0 – 999

1 – 249 N50:1 – 249

250 – 499 N51:0 – 249 Parameter

– – value
9500 – 9749 N88:0 – 249 read or write
9750 – 9999 N89:0 – 249

N20:0 – 127 Status of last parameter write

1–999 N30:1 – 999

1000 – 1999 N31:0 – 999 Parameter

– – read
8000 – 8999 N38:0 – 999 full
9000 – 9999 N39:0 – 999

1 – 249 N90:1 – 249

250 – 499 N91:0 – 249 Parameter

– – read
9500 – 9749 N128:0 – 249 full
9750 – 9999 N129:0 – 249

N40:0 – 63 Block transfer emulation area

N41:0 Logic command/status
N42:0 #ENQs
N42:1 #NAKs
N42:2 Message TIMEOUT (mS)
N42:3 Application TIMEOUT (Seconds)
N42:4 Adapter series number (2 = B)
N42:5 Adapter firmware version (201=FRN2.01)
N42:6 Maximum node address (DH–485)

System File 0

(or N200:1 – 63)

SLC compatible system file (DH–485)

Parameter

Station name (DF1)

1203–5.5 September 1995

"

Note: Some devices cannot access an element number over 254.
The files from N50 to N129 are intended for use with those devices.

4–7Configuring and Interfacing

The data tables have up to eight areas, each having a different
purpose.

1. Parameter Value Read or Write (N10 – N19, N50 – N89).

Reading data from files in this area will cause the Serial
Communications Module to read parameter values from the
SCANport device and send those values as the response to the
read message. Writing data to files in this area will cause the
Serial Communications Module to write that data into SCANport
device parameters.

2. Status of Last Parameter Write (N20). This area is read-only.

When read, the data returned contains status information from the
last parameter write that was performed by the Serial
Communications Module. If no errors occurred during the write,
all of the data returned will be zeros. Read this area beginning at
element number zero.

3. Parameter Read Full (N30 – N38, N90 – N129). This area is

read-only. When read, the data returned consists of 20 words (40
bytes) of information about each parameter including scaling,
parameter text, units text, minimum, maximum, and default
values. When reading this area, set the number of elements to
twenty times the number of parameters to be read.

4. Block Transfer Emulation Area (N40). This area provides a

method for sending and receiving SCANport messages to and
from the SCANport device. This allows you to perform every
SCANport command the device supports. Chapter 5 provides
information about the block transfer emulation functions
available for use with the Serial Communications Module.

To send a SCANport message, write data into this area beginning
with element number zero. Allow sufficient time for the
SCANport device to respond to the message and then read the
response message from this area beginning with element number
zero.

5. Producer/Consumer Emulation Area (N41). Each element in

this area has a different function. Refer to the DIP switch
configuration tables in Chapter 3 for more information.

– Logic Command/Status. Writing sends a Logic Command

to the drive. Reading supplies the SCANport device Logic
Status. Refer to the manual supplied with the SCANport
device for more information.

– Reference/Feedback. Writing sends a reference to the

SCANport device. Reading supplies feedback from the
SCANport device. The meaning of the reference and
feedback values depend on the type of SCANport device.

1203–5.5 September 1995

4–8 Configuring and Interfacing

– Datalink A1. Writing to Datalink A1 sends a value to the

parameter pointed to by the DataIn A1 parameter of the
SCANport device. Reading from Datalink A1 reads the
value of the parameter pointed to by the DataOut A1
parameter of the SCANport device.

– Datalink A2 through Datalink D2 function the same as

Datalink A1.

6. Serial Communications Module Parameters (N42). Each of

the four elements in this area can be read or written and affects
the operation of the Serial Communications Module as follows:

– Number of ENQ’s. The number of ENQ’s sent by the

module before giving up on receiving ACK or NAK. The
default is 3.

– Number of NAK’s. The number of times the module will

resend a message if the response is always NAK. The
default is 3.

– Message Timeout. The number of milliseconds the module

will wait before sending an ENQ. The default is 100mS.

– Application Timeout. The number of seconds the module

will wait between messages before faulting the SCANport
device it is connected to. The default is set by the
configuration DIP switches.

– Adapter Series Number. The series letter of the 1203

Serial Communications Module expressed as a number.
For example, 1=A, 2=B, and so forth.

– Adapter Firmware Version. The firmware version number

of the 1203 Serial Communications Module. For example,
201=FRN2.01, 202=FRN2.02, and so forth.

– Maximum Node Address. When in DH–485 mode, this

parameter sets the maximum node address that the adapter
will attempt to communicate with. The default value is 31
(decimal).

7. Reserved for Future Expansion. If you try a read or write to

any address in this area, the Serial Communications Module will
respond with an error message.

1203–5.5 September 1995

8. System Area. Performing a read from this area will cause the

Serial Communications Module to respond with a 22-character
string. This string is set at power-up to contain the Product Text
String from the SCANport device with /1203 appended to it.
Writing to this area changes the characters contained in the string.
Cycling power returns the string to its original text.

Configuration Examples

Ladder rung example for Gx2 manual

Rung 2:0

| I:000 MG20:0 B3 +MSG––––––––––––––––––––+ |
+––] [–––]/[–––[ONS]––––––––––––––––––––––––––––+SEND/RECEIVE MESSAGE +–(EN)–+
| 00 EN 2 |Control block MG20:0+–(DN) |
| | +–(ER) |
| +–––––––––––––––––––––––+ |

Data Table Report

MESSAGE INSTRUCTION DATA MONITOR FOR CONTROL BLOCK MG20:0

Communication Command: PLC–5 TYPED READ
PLC–5 Data Table Address: N30:0 ignore if timed–out: 0 TO
Size in Elements: 50 to be retried: 0 NR
Local/Remote: LOCAL awaiting execution: 0 EW

Remote Station: N/A continuous: 0 CO
Link ID: N/A error: 0 ER

Remote Link Type: N/A message done: 0 DN
Local Node Address: 001 message transmitting: 0 ST
Destination Data Table Address: N10:1 message enabled: 0 EN
Port Number: 00

4–9Configuring and Interfacing

DF1 Messaging with a PLC–5/80 Example

This example reads parameters 1 through 50.

Error Code: 0000 (HEX)

1203–5.5 September 1995

4–10 Configuring and Interfacing

Notes:

• I:000/00 is any application–related conditioning logic.

• MG20:0.EN is the enabled status bit from the message block.

• B3/2 is a one-shot that causes the message to be resent each time

the message block completes or errors (as long as I:000/00 is
true).

• The DF1 address of the PLC-5 is the same as its DH+ address (set

by DIP switch SW1 on the PLC-5).

• Refer to Publication 6200–6.4.11, Instruction Set Reference, for

information on the MSG block.

• Refer to Publication 1785–6.6.1, Hardware Installation Manual,

for information on configuring the PLC-5 Channel 0 hardware.

• Refer to Publication 6200–6.4.6, Software Configuration and

Maintenance, for information on configuring the PLC-5 Channel

0 driver.

• Only one message may be active to a Serial Communications

Module at any time. When you write the PLC program, you must
ensure this requirement.

1203–5.5 September 1995

DF1 Messaging with a 1746–BAS Module Example

This example accepts a parameter number and a value from a user
terminal and writes the data out to a SCANport–compatible device.

100 REM _____________________________________________________________
101 REM __ This program inputs a parameter number and a value
102 rem __ from a user terminal and writes it out to a scanport
103 rem __ compatible device.
104 rem __ for 1746–BAS and 1203–GD2 modules
105 rem _____________________________________________________________
110 STRING 512,127
140 REM
150 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
160 REM Setup port 1 to 9600 baud, no parity, 8 bits, 1 stop bit,
170 REM software handshaking, and battery backed ram data storage.
180 REM !!!!REMEMBER TO SET TERMINAL TO MATCH!!!!
190 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
200 MODE (PRT1,9600,N,8,1,S,R)
210 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
220 REM
230 REM Setup port 2 to 300 baud, no parity, 8 bits, 1 stop bit,
240 REM software handshaking, and battery backed ram data storage.
250 REM
260 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
270 MODE (PRT2,300,N,8,1,S,R)
280 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
290 REM
300 REM Enable DF1 driver
310 REM (20 = Setup for Full Duplex, Auto–Detect Embedded Responses,
320 REM Disable Duplicate Packet Detection, BCC error checking)
330 REM (200 = Wait 1 second for polling by Master)
340 REM (2 = 2 retries)
350 REM (0= No RTS on delay)
360 REM (0 = No RTS off delay)
370 REM (8 = 1746–BAS module address)
380 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
390 PUSH 20
400 PUSH 200
410 PUSH 2
420 PUSH 0
430 PUSH 0
440 PUSH 8
450 CALL 108
460 REM __________________ end df1 config _____________________________
461 Print: print ”A negative parameter number exits the program ”
470 INPUT ”Offset (Parameter Number)? ”,PAR_NUM
475 IF (PAR_NUM<0) THEN GOTO 530
480 INPUT ”Control (parameter value)? ”,PAR_VALUE
481 REM encode the value as an ASCII hex string in order of LOW, HIGH
490 ASC($(1),1)=PAR_VALUE–(INT(PAR_VALUE/256)*256)
500 ASC($(1),2)=INT(PAR_VALUE/256)
510 GOSUB 550 : REM fire off the write instruction
520 GOTO 460
530 CALL 113
540 END

4–11Configuring and Interfacing

1203–5.5 September 1995

4–12 Configuring and Interfacing

550 REM ****************************************************************
560 REM ********* PLC TYPED READ Subroutine *****
561 REM ********* inputs Parameter number in var PAR_NUM *****
562 REM ********* ASC coded hex string of value in $(1) *****
563 REM ********* outputs: failure message *****
565 REM ****************************************************************
570 REM subroutine to do a typed write of a single parameter
580 PRINT ”Executing PLC Remote Write ”
600 PUSH 5 : REM PLC5 Typed Write
610 PUSH 1 : REM Communications Module Node Address
620 PUSH 10 : REM File Number ( atterss is N10:PAR_NUM)
630 PUSH ASC(N) : REM Communications Module File Type
640 PUSH PAR_NUM : REM Starting Word in File
650 PUSH 1 : REM Number of Words to Transfer (one parameter)
660 PUSH 50 : REM Command Time–out (x100ms)
670 PUSH 2 : REM Data Source (2 = Internal String)
680 PUSH 0 : REM Offset in M0 file (Not used in this example)
690 PUSH 1 : REM String # ASCII hex number order low, high
700 CALL 123 : REM Builds the message to be sent
710 POP S
720 PUSH 123 : REM sets up call 29
730 CALL 29 : REM send the message
750 RETURN
760 REM *********** End Write parameter subroutine *********

1203–5.5 September 1995

4–13Configuring and Interfacing

DH–485 Messaging with a SLC5/03 Interface

The following example uses the DH–485 communications mode to
send a message from an SLC5/03 to the Serial Communications
Module.

Rung 2:0
If this is the first scan or the error bit is true, the MSG instruction’s control
byte is cleared and the done bit is set. This ensures that the program always
starts correctly and recovers from a MSG error.
| First |
| Scan |
| Bit |
| S:1 +AND–––––––––––––––+ |
|–+––––] [–––––+––––––––––––––––––––––––––––––––––––––+–+BITWISE AND +–+–|
| | 15 | | |Source A 255| | |
| | | | | | | |
| | | | |Source B N15:0| | |
| | | | | 8192| | |
| | | | |Dest N15:0| | |
| | | | | 8192| | |
| | | | +––––––––––––––––––+ | |
| | MSG Block | | MSG Block | |
| | Error (ER) | | Done (DN) | |
| | Bit | | Bit | |
| | N15:0 | | N15:0 | |
| +––––] [–––––+ +––––(L)–––––––––––––––+ |
| 12 13 |

Rung 2:1
When the MSG instruction is done, the TON provides a 2 second delay before another
message is sent. B3:0/0 represents user logic. The timer can be adjusted to
provide control over DH485 network loading.
| User |MSG Block |
| DH485 |Done (DN) |
| Enable |Bit |
| B3:0 N15:0 +TON–––––––––––––––+ |
|––––] [––––––––] [––––––––––––––––––––––––––––––––––+TIMER ON DELAY +–(EN)–|
| 0 13 |Timer T4:0+–(DN) |
| |Time Base 0.01| |
| |Preset 200| |
| |Accum 156| |
| +––––––––––––––––––+ |

1203–5.5 September 1995

4–14 Configuring and Interfacing

Rung 2:2
When the timer is done, the MSG instruction is enabled.
| TON Done – |
| Enable |
| MSG Block |
| T4:0 +MSG––––––––––––––––––––+ |
|––––] [––––––––––––––––––––––––––––––––––––––––+READ/WRITE MESSAGE +–(EN)–|
| DN |Type PEER–TO–PEER+–(DN) |
| |Read/Write WRITE+–(ER) |
| |Target Device 500CPU| |
| |Local/Remote LOCAL| |
| |Control Block N15:0| |
| |Control Block Length 14| |
| +–––––––––––––––––––––––+ |

Rung 2:3
| |
|–––––––––––––––––––––––––––––––––––––+END+––––––––––––––––––––––––––––––––––––|
| |

Address Data (Radix=BINARY) Address Data (Radix=BINARY)
B3:0 0000 0000 0000 0001

The following are the data tables used for this example:

Address EN TT DN TIME BASE PRE ACC
T4:0 1 1 0 .01 sec. 200 156

Address CU CD DN OV UN UA PRE ACC
C5:0 0 0 0 0 0 0 32767 2778

Address Data (Radix=DECIMAL)
N10:0 7 6 0 0 0 0 0 0 0

Address Data (Radix=DECIMAL)
N15:0 8192 3 9 10 137 5 0 224 10 0
N15:10 0 0 0 0

M0:1 File Length:64
M0:2 File Length:0
M0:3 File Length:0
M0:4 File Length:0

M1:1 File Length:64
M1:2 File Length:0
M1:3 File Length:0
M1:4 File Length:0

1203–5.5 September 1995

Block Transfer Emulation
Instructions

Chapter

5

Chapter Objectives

Block Transfer Emulation Status Word

This chapter contains the header and data configurations that you
need to set up the data files for the block transfer emulation
instructions. The header and data values depend on the operation
you want to perform.

When an operation is unsuccessful, header word 2 of the drive
response contains a negative value (bit 15 = 1).

In most cases, the drive also returns a status word to indicate the
reason for the failure. The location of the status word is typically
header word 4 in the drive response, but will depend on the message.

The following are valid status codes:

Value Description

0 No error occurred.

The service failed due to an internal reason, and the drive could not perform

1

the request (some messages are read only or write only).
2 The requested service is not supported.
3 An invalid value in the block transfer emulation request header word 2.
4 An invalid value in the block transfer emulation request header word 3.
5 An invalid value in the block transfer emulation request header word 2.
6 The data value is out of range.

There is a drive state conflict. The drive is in an incorrect state to perform the
7

function. The drive cannot be running when you perform certain functions.

1203–5.5 September 1995

5–2

Scattered Parameter Value Read

The Scattered Parameter Value Read function reads a scattered list of
parameters.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 5–63 words
Drive response instruction length: 5–63 words

Message Structure

PLC Request

Message Length

5–63

PLC Decimal Value

3

Number of Parameter

Values to Read

Parameter Number

1

0

Parameter Number

Parameter Number

2

0

Parameter Number

3

0

•

•

•

•

•

•

30

0

Header Word 1

Header Word 2

Data Word 3

Data Word 4

Data Word 5

Data Word 6

Data Word 7

Data Word 8

Data Word 9

•

•

•

•

•

•

Data Word 62

Data Word 63

Drive Response

Message Length

5 – 63

PLC Decimal Value

3 –– Message OK

–32765 –– Message Error

Number of Parameter

Values to Read

bit

Parameter Number

15

1

Parameter Value or

Status Word

1

Parameter Number

bit
15

2

Parameter Value or

Status Word

2

bit

Parameter Number

15

3

Parameter Value or

Status Word

3

•

•

•

•

•

•

Parameter Number

bit
15

30

Parameter Value or

Status Word

30

Header
Word 1

Header
Word 2

Data

Word 3

Data

Word 4

Data

Word 5

Data

Word 6

Data

Word 7

Data

Word 8

Data

Word 9

•

•

•

•

•

•

Data

Word 62

Data

Word 63

1203–5.5 September 1995

5–3Block Transfer Emulation Instructions

Message Operation

Scattered Parameter Value Read reads a pre–defined group of
parameter values, in any order, from the device. You define the
number of parameters to read in word 3 of the request. The
parameters to be read and their order is defined starting with word 4.
An unused word is left between each parameter request, so the drive
can respond with the parameter value, as shown.

If an error has occurred in reading any of the parameters:

• Word 2 of the drive response returns a value of –32765.

• Bit 15 of the drive response word for the number of that

parameter is set.

• The drive response word for the value of that parameter returns a

status word instead of returning the parameter value.

Example

PLC request

Drive response

In this example, eight parameters were read from a 1336 PLUS
drive, as defined in word 3 of the request. The parameter numbers
requested were 5, 7, 8, 20, 18, 17, 19, and 36. The drive response
returned the values of these parameters in the data file. These values
are in drive units.

Data File Format

0

N10:10
N10:20

N10:90
N10:100

19 3

0 18*

19 3

* Example only – These values vary depending on parameters and products.

123456 78 9

8*

0* 17*

8*

4096*4096* 18*

5*

5*

17*

0 7* 0 8* 0

0

6*

51*

19*

7*

19*

0

1000*

60*

36*

8*

36*

0
1000*
6144*

20*

20*

1203–5.5 September 1995

5–4

Scattered Parameter Value Write

The Scattered Parameter Value Write function writes to a scattered
list of parameters and returns the status of each parameter. If any of
the states have errors, the parameter number is negative.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 5–63 words
Drive response instruction length: 5–63 words

Message Structure

PLC Request

Message Length

5–63

PLC Decimal Value

–32765

Number of Parameter

Values to Write

Parameter Number

1

Parameter Value

1

Parameter Number

Parameter Number

2

Parameter Value

2

Parameter Number

3

Parameter Value

3

•

•

•

•

•

•

30

Parameter Value

30

Header Word 1

Header Word 2

Data Word 3

Data Word 4

Data Word 5

Data Word 6

Data Word 7

Data Word 8

Data Word 9

•

•

•

•

•

•

Data Word 62

Data Word 63

Drive Response

Message Length

5 – 63

PLC Decimal Value

3 –– Message OK

–32765 –– Message Error

Number of Parameter

Values to Write

bit

Parameter Number

15

Status Word 1

bit
15

Status Word 2

bit
15

Status Word 3

bit
15

Status Word 30

1

Parameter Number

2

Parameter Number

3

•

•

•

•

•

•

Parameter Number

30

Header
Word 1

Header
Word 2

Data

Word 3

Data

Word 4

Data

Word 5

Data

Word 6

Data

Word 7

Data

Word 8

Data

Word 9

•

•

•

•

•

•

Data

Word 62

Data

Word 63

1203–5.5 September 1995

5–5Block Transfer Emulation Instructions

Message Operation

The Scattered Parameter Value Write function writes data values to a
pre–defined group of device parameters in any order. You define the
number of parameters to write in word 3. The parameters to be
written to and their order is defined starting with word 4.

If an error occurs while writing to any of the parameters:

• Word 2 of the drive response returns a value of –32765.

• Bit 15 of the drive response word for that parameter’s number is

set.

• The drive response word for that parameter’s status word is

non–zero.

If no error has occurred:

• Word 2 of the drive response returns a value of 3.

• Each of the drive response’s parameter numbers are the same as

in the request.

• Each of the drive response status words returns a value of 0.

PLC request

Drive response

Example

In this example, six parameters were written to in a 1336 PLUS
drive. Word 3 of the request (N10:12) defines the number of
parameter values that are transferred. Each parameter number
followed by its value, are listed in the message beginning with word

4. The values are entered in device units.
The drive response (N10:90) returns the status of each parameter

write. If the request was successful, a zero is returned. If an error
has occurred, the response returns a status word code for the error.

Data File Format

0

N10:0
N10:20

N10:90
N10:100

* Example only – These values vary depending on parameters and products.

15 –32765 6*

10* 10* 2* 12*

15 3 6*

0* 10* 0*

123456789

90*

90*

12*

0*

1*

150* 4* 30* 20*

5*

0*

150* 0* 30* 0*

31*

31*

1203–5.5 September 1995

5–6

Product ID Number Read

The Product ID Number Read function returns the product ID of the
device to which the Serial Communications Module is connected.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 4 words

Message Structure

PLC Request

Message Length

3

PLC Decimal Value

256

0

Header Word 1

Header Word 2

Data Word 3

Drive Response

Message Length

6

PLC Decimal Value

256 –– Message OK

–32512 –– Message Error

0

Product ID Number

Header
Word 1

Header
Word 2

Header
Word 3

Data

Word 4

Product ID
Number

2
3
4
5
16
17
18
19
20
21
22
23

Description

1336F (PLUS Fractional)
1336F (PLUS)
1336G (FIBERS Fractional)
1336G (FIBERS)
1336T (FORCE)
1395
1394
1557
SMP
SMC
1304
1305

Message Operation

The Product ID Number Read function, through the drive response
message word 4, indicates the type of device the Serial
Communications Module is connected to. This value is defined in
the message response chart shown above.

If an error has occurred, word 2 of the response returns a negative
value of –32512.

1203–5.5 September 1995

Example

In this example, the Product ID Number Read was requested. The
drive response contained a value of 3 in word 4 of its message
response, indicating a connection to a 1336 PLUS.

Data File Format

5–7Block Transfer Emulation Instructions

PLC request
Drive response

N10:0
N10:90

0

30

60

123456789

256

256

3*

* Example only – These values vary depending on parameters and products.

1203–5.5 September 1995

5–8

Parameter Read Full

The Parameter Read Full function provides all known attributes for
the parameters requested. This information includes the parameter’s
current value, descriptor, multiply and divide value, base value,
offset value, text string, group element reference, minimum value,
maximum value, default value, and unit text string.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 20 words

Message Structure

PLC Request

Message Length

3

PLC Decimal Value

768

Parameter Number

(See Drive List)

Header Word 1

Header Word 2

Data Word 3

Drive Response

Parameter Value

or Status Word

Descriptor

Multiply Value

Data

Word 1

Data

Word 2

Data

Word 3

Divide Value

Base Value

Offset Value

Parameter Text

Char 2 Char 1

Parameter Text

Char 4 Char 3

Parameter Text

Char 6 Char 5

Parameter Text

Char 8 Char 7

Parameter Text

Char 10 Char 9

Parameter Text

Char 12 Char 11

Parameter Text

Char 14 Char 13

Parameter Text

Char 16 Char 15

Data

Word 4

Data

Word 5

Data

Word 6

Data

Word 7

Data

Word 8

Data

Word 9

Data

Word 10

Data

Word 11

Data

Word 12

Data

Word 13

Data

Word 14

1203–5.5 September 1995

Message Structure (Continued)

5–9Block Transfer Emulation Instructions

Drive Response

File, Group, Element

Minimum Value

Maximum Value

Default Value

Unit Text

Char 2 Char 1

Unit Text

Char 4 Char 3

Data

Word 15

Data

Word 16

Data

Word 17

Data

Word 18

Data

Word 19

Data

Word 20

Message Operation

Parameter Read Full retrieves the attributes of the specified
parameter. The attributes for each parameter include the data,
minimum and maximum values, and the parameter text. The
response message returns this information.

If an error has occurred in reading any of the values, word 1 contains
the status word.

The parameter text is returned with each data word containing two
ASCII characters per word. The first and second characters are in
opposite order.

Example

In this example, a Parameter Read Full was performed through block
transfer on a 1336 PLUS. N10:10 shows the header message for the
request. The data is returned in the response data file, starting with
word 1, for parameter 20. Word 1 shows the present value in drive
units. Word 2 through word 6 provide scaling information, used to
convert drive units to engineering units for the Human Interface
Module (HIM). Word 7 through word 14 provide the parameter
name.

1203–5.5 September 1995

5–10

This example shows the response message N10:90 through N10:112
in both binary and ASCII. Note the ASCII information beginning
with N10:99. The parameter name characters return in reverse order
for each word. N10:99 has the ASCII value of (aM). To read this,
invert the word to read (Ma). The next word (ix), inverted gives you
(xi). These words, along with the following two words, form the
word Maximum. You can see the parameter name Maximum Voltage
in word 7 through word 14 of the response message. In addition,
word 20, is also returned in this format. This word provides the units
the parameter is defined in. In this example it is vlts.

Word 15 contains the file, group, and element which are used to
reference the parameter.

Words 16–18 contain the minimum, maximum, and default values of
this parameter.

Data File Format

PLC request
Drive response

Drive response

N10:10
N10:90

N10:100

N10:90
N10:100

0

3 768 20*

4096* 355* 1* 4096*

28502* 29804* 26465* 8293*

#

\10\00

#

o V

12 3 45 6 7 8 9

460*

1794*0*1024*

\01 c
t l g a e 07 02 04 00 \13 0

\00\01 \01\CC \00\00 a M i x u m\10\00 m

24909*

4915*

* Example only – These values vary depending on parameters and products.

# ASCII Display values

27000*

4096*

\10\00

30061*

27734* 29556*

l V s t

8301*

1203–5.5 September 1995

5–11Block Transfer Emulation Instructions

Parameter Value Read

The Parameter Value Read function reads the 16–bit parameter data
value for the selected parameter number.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 1 word

Message Structure

PLC Request

Message Length

3

PLC Decimal Value

769

Parameter Number

(See Drive List)

Message Operation

Header Word 1

Header Word 2

Header Word 3

Drive Response

Parameter Value or

Status Word

Data

Word 1

PLC request
Drive response

N10:10
N10:90

Parameter Value Read reads parameter values from the drive and
places that value (or an error code) in word 1 of the drive response
data file. The value is shown in device units. Device units are listed
in the user manual for the device you are using.

If an error occurs:

• Word 1 of the response contains the status code.

• The status area of the data file is non–zero.

Example

In this example, the value of parameter 20 was requested from a
1336 PLUS and a value of 4096 was returned. 4096 is the internal
drive unit value for the Maximum Rated Voltage Parameter. This
corresponds to a value of 100% Drive Rated Volts in Display Units.

Data File Format

0

3 769 20*

4096*

1234 5678 9

* Example only – These values vary depending on parameters and products.

1203–5.5 September 1995

5–12

Parameter Value Write

The Parameter Value Write message writes a 16–bit parameter data
value to the selected parameter number.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 1 word
Drive response instruction length: 4 words

Message Structure

PLC Request

Parameter Value

Data Word 1

Drive Response

Message Length

4

PLC Decimal Value

769 –– Message OK

–31999 –– Message Error

Parameter Number

Status Word

Header
Word 1

Header
Word 2

Data

Word 3

Data

Word 4

PLC request
Drive response

N10:0
N10:90

Message Operation

The Parameter Value Write function sends a new value to the
specified parameter. The value must be in device units. Units for
each parameter are listed in the device manual.

If an error has occurred, word 2 of the response returns a value of
–31999, and word 4 contains a status code.

Example

In this example, a value of 4096 was sent to Parameter 20. 4096 is
in drive units and indicates a value of 100% Drive Rated Volts, as
defined in P147, Drive Rated Volts.

Data File Format

0

4 –31999 20*

4 769 20* 0

123456789

4096*

* Example only – These values vary depending on parameters and products.

1203–5.5 September 1995

5–13Block Transfer Emulation Instructions

EE Memory Functions

The EE Memory Functions message activates the specified EE
functions.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 4 words
Drive response instruction length: 3 words

Message Structure

PLC Request

Message Length

4

PLC Decimal Value

–31998

0

Value EE Command

00
01
02
03

Not Used
EE Save
EE Recall
EE Default Initialize

Header Word 1

Header Word 2

Header Word 3

Header Word 4EE Command

Drive Response

Message Length

3

PLC Decimal Value

770 –– Message OK

–31998 –– Message Error

0

Header
Word 1

Header
Word 2

Header
Word 3

Message Operation

The EE memory function allows three different message requests:

• EE Save saves parameter information from the working memory

or RAM to EEPROM.

• EE Recall retrieves the last saved data from EEPROM and places

it in the working memory or RAM.

• EE Default Initialize clears the RAM and EEPROM and sets all

parameter values to default.

If an error has occurred, word 2 of the response returns a value of
–31998.

1203–5.5 September 1995

5–14

Example

This example requests that an EEPROM Save function be
performed.

Data File Format

PLC request
Drive response

N10:10
N10:90

0

43–31998

1234 5678 9

770

0*
0*

1*

* Example only – These values vary depending on parameters and products.

1203–5.5 September 1995

5–15Block Transfer Emulation Instructions

Fault Clear/Reset

The Fault Clear/Reset message activates the Clear Fault, Clear Fault
Queue, and Drive Reset functions.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 4 words
Drive response instruction length: 4 words

Message Structure

PLC Request

Message Length

4

PLC Decimal Value

–30976

0

Value Fault Command

00
01
02
03

Not Used
Clear Fault
Clear Fault Queue
Drive Reset (1336 FORCE Only)

Header Word 1

Header Word 2

Header Word 3

Data Word 4Fault Command

Drive Response

Message Length

4

PLC Decimal Value

1792 –– Message OK

–30976 –– Message Error

0

Status Word

Header
Word 1

Header
Word 2

Data

Word 3

Data

Word 4

PLC request
Drive response

Message Operation

The specified fault Clear/Reset function sends a fault handling
request to the device.

• A Clear Fault request clears the last fault that occurred.

• A Clear Fault Queue clears the entire fault buffer. Certain

devices may store more than one fault.

• A Drive Reset is used with the 1336 FORCE drive product only.

This function resets the drive; it clears the fault queue and writes
the parameter information stored in EEPROM to RAM.

Data File Format

0
N10:0
N90:0

4 –30976
4 1792 0*0

* Example only – These values vary depending on parameters and products.

123456789

1,2,30

1203–5.5 September 1995

5–16

Fault Queue Entry Read Full

This function reads the contents of the specified fault queue entry. A
message is returned which includes the fault text and fault code
associated with the specified fault queue entry. The 1336 FORCE
also returns the time stamp associated with the fault.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 12 or 16 words

Message Structure

PLC Request

Message Length

3

PLC Decimal Value

1792

Fault Queue

Entry Number

Header Word 1

Header Word 2

Data Word 3

Drive Response

Message Length

18

PLC Decimal Value

1792 –– Message OK

–30976 –– Message Error

Fault Queue

Entry Number

Fault Text

Char 2 Char 1

Fault Text

Char 4 Char 3

Fault Text

Char 6 Char 5

Fault Text

Char 8 Char 7

Fault Text

Char 10 Char 9

Fault Text

Char 12 Char 11

Fault Text

Char 14 Char 13

Fault Text

Char 16 Char 15

Header
Word 1

Header
Word 2

Header
Word 3

Data

Word 4

Data

Word 5

Data

Word 6

Data

Word 7

Data

Word 8

Data

Word 9

Data

Word 10

Data

Word 11

1203–5.5 September 1995

1336 FORCE

Drive Only

Fault Code Value

Clock Time

SES REF

Clock Time

Hour Minute

Clock Time

Date Day

Clock Time

Y ear Month

Data

Word 12

Data

Word 13

Data

Word 14

Data

Word 15

Data

Word 16

5–17Block Transfer Emulation Instructions

Message Operation

Fault Queue Entry Read Full reads the contents of the fault queue
specified in word 3 of the request. The response returns the fault text
which can be ASCII text. The text will have every two characters in
reverse order. In addition, the 1336 FORCE returns a time stamp,
indicating the day and time the fault occurred.

If an error has occurred, word 2 of the response returns a negative
value.

Example

In this example, Fault Queue Entry number 3 was retrieved from a
1336 PLUS drive. The drive response returned the ASCII text Drive
Reset Flt, with each character reversed. The fault code for this
example is 22.

Data File Format

PLC request
Drive response

N10:0
N10:90

N10:100

N10:90
N10:100

0

3 1792 3*

18 1792 3* 29252*

8308*

#

\00\12

#

t \00\16

123456789

30313* 8293* 25938* 25971* 8308*

22*

\07\00

\03\00 v i l F

r D

e

e R

* Example only – These values vary depending on parameters and products.

# ASCII Display values

27718*

e s t

1203–5.5 September 1995

5–18

Fault Queue Size

The Fault Queue Size function gets the number of fault entries
allowed in the fault queue.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 4 words

Message Structure

PLC Request

Message Length

3

PLC Decimal Value

1793

0

Header Word 1

Header Word 2

Header Word 3

Drive Response

Message Length

5

PLC Decimal Value

1793 –– Message OK

–30975 –– Message Error

0

Fault Queue Size

Header
Word 1

Header
Word 2

Data

Word 3

Data

Word 4

PLC request
Drive response

Message Operation

The Fault Queue Size function reads back the size of the fault queue
available in the product. Each product may have a different number
of fault queue entries available for storage.

If an error has occurred, word 2 of the response returns a value of
–30975.

Example

In this example, a 1336 PLUS was used. This product has a fault
queue of four storage locations available to store faults. This value
is seen in word 4 of the response header message.

Data File Format

0

N10:0
N10:90

3 1793 0

6 1793 0 4*

* Example only – These values vary depending on parameters and products.

123456789

1203–5.5 September 1995

5–19Block Transfer Emulation Instructions

Trip Fault Queue Number

The Trip Fault Queue Number provides the fault queue number of
the fault that caused the device to trip.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 3 words
Drive response instruction length: 4 words

Message Structure

PLC Request

Message Length

3

PLC Decimal Value

1794

0

Header Word 1

Header Word 2

Header Word 3

Drive Response

Message Length

4

PLC Decimal Value

1794 –– Message OK

–30984 –– Message Error

0

Number of Trip Fault

Header
Word 1

Header
Word 2

Header
Word 3

Header
Word 4

PLC request
Drive response

Message Operation

The Trip Fault Queue Number function provides the number of the
entry in the fault queue that tripped the device in word 4 of the drive
response. The Fault Queue Number is 0 when the device is not
faulted.

If an error has occurred in the block transfer, word 2 of the response
is negative.

Example

In this example, the device has stored a fault in the first entry of the
Fault Queue that caused the drive to trip. Word 4 of the response
indicates the entry number.

Data File Format

0

N10:0
N10:90

3 1794 0

6 1794 0 1*

* Example only – These values vary depending on parameters and products.

123456789

1203–5.5 September 1995

5–20

1203–5.5 September 1995

T roubleshooting

Chapter

6

Chapter Objectives

Use this chapter to help you troubleshoot your Serial
Communications Module system using the LED indicators on the
front of the device (as shown below). The Serial Communications
Module is a non-serviceable device that you should return to
Allen-Bradley for replacement when a major fault exists that is
attributable to the Serial Communications Module itself.

LED Locations

Front View Open Version

TX

Serial STS

SCANport STS

RX

J2

Front View Enclosed Version

SW1SW2SW3

J4

RX

SCANport STS

Serial STS

TX

1203–5.5 September 1995

AB0414C

6–2 Troubleshooting

Indicator Color Description Recommended Action

Serial Sts Green (blinking) Link OK, off–line

SCANport Sts Green (blinking) Link OK, not connected

TX Off No transmission occurring

RX Off No transmission received

ATTENTION: Servicing energized industrial control
equipment can be hazardous. Electrical shock, burns,

!

or unintentional actuation of controlled industrial
equipment may cause death or serious injury. Follow
the safety-related practices of NFPA 70E, Electrical
Safety for Employee Workplaces, when working on or
near energized equipment. Do not work alone on
energized equipment.

ATTENTION: Do not attempt to defeat or override
fault circuits. You must determine and correct the

!

cause of a fault indication before attempting operation.
Failure to correct a drive or system malfunction may
result in personal injury and/or equipment damage due
to uncontrolled machine system operation.

LED Troubleshooting Table

•Check configuration switch settings.

•Check for serial cable connection.

•Cycle Serial Communications Module power .

Green (steady) Link OK, on–line None, system functioning properly

Red (blinking)

Red (steady) Faulted

Green (steady) Link OK, connected None

Red (blinking)

Red (steady) Faulted

Flash Transmission occurring None

Flash Characters being received None

Link was on–line and is now

off–line

Link was connected and is now

not connected

Check for failed devices or link problems.

•Check configuration switch settings.

•Check for serial cable connection.

•Cycle power , replace module.

•Check configuration switch settings.

•Check for serial cable connection.

•Cycle power .

Check for failed devices or link problems.

•Check configuration switch settings.

•Check for serial cable connection.

•Cycle power , replace module.

•Send serial data again

•Check data device to verify it is sending data

1203–5.5 September 1995

Specifications

Chapter

7

Chapter Objectives

Catalog Number: –GM2 –GD2 –GK2
Environmental:

Operating Temperature
Storage Temperature

Electrical:

Input Voltage Supplied by drive 85 to 264V AC, 1 phase
Input Frequency NA 45 to 63 Hz NA
Input Current NA 35mA maximum 0.4 amps maximum
SCANport Load 60mA DC 60mA DC 60mA DC

Communications:

SCANport Side

Serial Side

Baud Rates
Checksum BCC or CRC BCC or CRC BCC or CRC

Dimensions:

This chapter provides you with background information and
specifications that you may need to install or apply your Serial
Communications Module.

Product Specifications

Open Style

0 to 50° C (32 to 122°F) 0 to 50° C (32 to 122°F) 0 to 50° C (32 to 122°F)

–40 to 85° C (–40 to 185°F) –40 to 85° C (–40 to 185°F) –40 to 85° C (–40 to 185°F)

SCANport Peripheral

Interface

RS–232/RS–422/RS–485

(DF1)

DH–485

110, 300, 600, 1200, 2400,

4800, 9600, 19.2K

Open (IP00) NEMA Type 1 (IP30) NEMA Type 1 (IP30)

NA

Enclosed Style 115/230V

AC

SCANport Peripheral

Interface

RS–232/RS–422/RS–485

(DF1)

DH–485

110, 300, 600, 1200, 2400,

4800, 9600, 19.2K

45w x 76h x 123d mm

(1.8 x 3.0 x 4.8 in.)

Enclosed Style 24V DC

24V DC, ±10%

SCANport Peripheral

Interface

RS–232/RS–422/RS–485

(DF1)

DH–485

110, 300, 600, 1200, 2400,

4800, 9600, 19.2K

45w x 76h x 123d mm

(1.8 x 3.0 x 4.8 in.)

Module Compatibility

This module is intended for use with devices that communicate via
RS–232, RS–422, or RS–485 hardware standards using the DF1
protocol or the DH–485 standard. The Serial Communications
Module is intended to provide a means for transmitting messages
between these serial communications devices and Allen-Bradley
SCANport devices.

1203–5.5 September 1995

7–2 Specifications

1203–5.5 September 1995

Allen-Bradley, a Rockwell Automation Business, has been helping its customers improve
productivity and quality for more than 90 years. We design, manufacture and support a broad
range of automation products worldwide. They include logic processors, power and motion
control devices, operator interfaces, sensors and a variety of software. Rockwell is one of the
worlds leading technology companies.

Worldwide representation.

Argentina • Australia • Austria • Bahrain • Belgium • Brazil • Bulgaria • Canada • Chile • China, PRC • Colombia • Costa Rica • Croatia • Cyprus • Czech Republic •
Denmark • Ecuador • Egypt • El Salvador • Finland • France • Germany • Greece • Guatemala • Honduras • Hong Kong • Hungary • Iceland • India • Indonesia •
Ireland • Israel • Italy • Jamaica • Japan • Jordan • Korea • Kuwait • Lebanon • Malaysia • Mexico • Netherlands • New Zealand • Norway • Pakistan • Peru •
Philippines • Poland • Portugal • Puerto Rico • Qatar • Romania • Russia–CIS • Saudi Arabia • Singapore • Slovakia • Slovenia • South Africa, Republic • Spain •
Sweden • Switzerland • Taiwan • Thailand • Turkey • United Arab Emirates • United Kingdom • United States • Uruguay • Venezuela • Yugoslavia

Allen-Bradley Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, Tel: [phone] Fax: [phone]

1203–5.5 September 1995 74001–014–01(C)

T emplate revised June 23,

1995

1203–5.5 September 1995

Copyright 1995 Allen-Bradley Company, Inc. Printed in USA