Allen-Bradley 1203-GD2 User Manual
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Allen-Bradley 1203-GD2 User Manual

Allen-Bradley 1203-GD2 User Manual

Rs232/422/485 (using df1 protocol)
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Bulletin 1203
Serial Communications Module
RS232/422/485 (Using DF1 Protocol)
Catalog Number 1203-GD2, -GK2, -GM2
User Manual

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  • Page 1 Bulletin 1203 Serial Communications Module RS232/422/485 (Using DF1 Protocol) Catalog Number 1203-GD2, -GK2, -GM2 User Manual...
  • Page 2 In no event will Allen-Bradley Company be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.
  • Page 3 Summary of Changes Summary Information These changes have been made since any preliminary photocopy documents were issued: Chapter 1 A trademark symbol has been added to 1336 PLUS on page 1-1. Chapter 2 The word “board” has been changed to “module” in the last sentence of paragraph four on page 2-1.
  • Page 4 Summary of Changes This Page Intentionally Left Blank...

  • Page 5: Table Of Contents

    Table of Contents Introduction Chapter 1 Manual Objectives ........Who Should Use This Manual .
  • Page 6 Allen-Bradley Company, Inc. SMC, PLC-2/30, PLC-5/10, PLC-5/15, PLC-5/25, PLC-5/30, PLC-5/40, PLC-5/40L, PLC-5/60L, PLC-5/80, and PLC-5/250 are trademarks of Allen-Bradley Company, Inc. SCANport is a registered trademark of Allen-Bradley Company, Inc. SLC 500, SLC-5/02, and SLC-5/03 are registered trademarks of Allen-Bradley Company, Inc.

  • Page 7: Manual Objectives

    Serial Communications Module. For information on specific features of Allen-Bradley products mentioned herein, refer to the product user manual. IMPORTANT: This manual should be read in its entirety before installing, operating, servicing, or initializing the Serial Communications Module.

  • Page 8: Manual Organization

    Component damage may result if ESD control procedures are not followed. If you are not familiar with static control procedures, reference Allen-Bradley Publication 8000–4.5.2, Guarding Against Electrostatic Damage or any other applicable ESD protection handbook.

  • Page 9: Serial Device Compatibility

    Chapter 1 Component Test Procedures Serial Device Compatibility This Communications Module is intended for use with devices that communicate via the following protocols: Hardware Standard Communications Protocol RS232 RS422 RS485 IMPORTANT: “DF1” protocol is typically used with Allen-Bradley PLC programmable controllers.
  • Page 10 Chapter 1 Introduction This Page Intentionally Left Blank.

  • Page 11: Chapter Objectives

    Chapter Product Description Chapter Objectives In this chapter, you will read about: S Communications Module features S Location of configuration switches Module Description 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.

  • Page 12: Scanport Device Compatibility

    Chapter 2 Product Description SCANport Device Compatibility The SCANport Serial Communications Module is compatible with the following Allen-Bradley devices: Device Firmware Revision 1336 PLUS 1336 FORCE 1305 MicroDrive 2.0 or newer Figure 2.1 Open Style Communications Module SW1.1 – SW1.2 = Serial Mode Select SW1.3 –...
  • Page 13 Chapter 2 Product Description Figure 2.2 Enclosed Style Serial-to-SCANport Communications Module SCANport Connector Serial Channel D-Shell Connector Power Connection SCANport Status Diagnostic Serial Status LEDS AB0395C Switch SW2 Switch SW3 – Baud Rate Selection – Logic Command/Status and – Parity Enable Reference/Feedback –...
  • Page 14 Chapter 2 Product Description Figure 2.3 Typical Serial Communications/SCANport Device Interconnect Open Style Comm Module 1336 PLUS Serial Port 1305* Micro Drive IBM PC SCANport Serial Comm Link Communication Module SLC 5/03 . . . SMP 3 SCANport Communication Module Other Serial Devices AB0396C...

  • Page 15: Configuration Switches

    Chapter 2 Product Description Configuration Switches The Serial Communications Module contains three DIP Switches: SW1, SW2, and SW3 (Figure 2.1 and Figure 2.2). Switches are set ON or OFF as detailed in Figure 2.4. For a detailed explanation of switch configuration, refer to Chapter 3.
  • Page 16 Chapter 2 Product Description This Page Intentionally Left Blank.

  • Page 17: Chapter Objectives

    Chapter Installation Chapter Objectives In this chapter you will learn how to: S Mount the Communications Module S Configure the Communications Module S Connect power S Connect SCANport and serial communications cables Read this chapter completely before you attempt to install or configure your Communications Module.

  • Page 18: Factory Switch Settings

    Chapter 3 Installation Factory Switch Settings Switch Setting Communication Mode SW1-8 Module Address = 1 SW1-7 SW1-6 SW1-5 SW1-4 SW1-3 SW1-2 RS232 (DF1 Protocol) SW1-1 SW2-8 BCC Checksum SW2-7 Point-to-Point SW2-6 1 Stop Bit SW2-5 Parity Disabled SW2-4 Even Parity (if enabled) SW2-3 9600 Baud SW2-2...

  • Page 19: Switch Sw1

    Chapter 3 Installation Switch SW1 Switch SW1 is used to select: S Serial communications mode (RS232/RS422/RS485) S Communications Module address Communications Communications Module Address Mode Selection AB0398B Table 3.A Switch SW1 Settings for Communications Mode Switch Value SW1-2 SW1-1 Communications Mode (Decimal) RS232 (DF1 Protocol) RS422 (DF1 Protocol)
  • Page 20 Chapter 3 Installation Table 3.B Switch SW1 Settings for Serial Device Addressing Module Module Address Address SW1-8 SW1-7 SW1-6 SW1-5 SW1-4 SW1-3 (Decimal) (Octal)
  • Page 21 Chapter 3 Installation Module Module Address Address SW1-8 SW1-7 SW1-6 SW1-5 SW1-4 SW1-3 (Decimal) (Octal)

  • Page 22: Switch Sw2

    Chapter 3 Installation Switch SW2 Switch SW2 is used to select: S Baud rate S Parity S Number of Stop Bits S Point-to-Point or Multi-Drop S Checksum mode (CRC or BCC) Parity Baud Rate Setting Selection Stop Bits Point-to-Point/Multi-Drop Checksum Mode AB0399A Table 3.C Switch SW2 Settings for BCC/CRC Selection...
  • Page 23 Chapter 3 Installation Table 3.F Switch SW2 Settings for Parity Selection SW2-5 SW2-4 Function Don’t Care Parity Disabled Even Parity Odd Parity Table 3.G Switch SW2 Settings for Baud Rate Switch Value SW2-3 SW2-2 SW2-1 Baud Rate (Decimal) 1200 2400 4800 9600 19200...

  • Page 24: Switch Sw3

    Chapter 3 Installation Switch SW3 Switch SW3 is used to select: S Logic Command/Status and Reference/Feedback S DataLinks (up to four DataLinks) S Stop Bits (1 or 2) S Application Timeout Default Value Datalink Message Application Timeout Enables Default Values Logic Command/ Duplicate Message Status and...
  • Page 25 Chapter 3 Installation Table 3.L Switch SW3 Settings for Datalink D SW3-5 Function Disable Datalink D Messaging Enable Datalink D Messaging Table 3.M Switch SW3 Settings for Duplicate Message Detection SW3-6 Duplicate Message Detection Disable Duplicate Message Detection Enable Duplicate Message Detection Table 3.N Switch SW3 Settings for Application Timeout Default Value SW3-8...

  • Page 26: Mounting The Communications Module

    Chapter 3 Installation Mounting the The Communications Module can be provided in three Communications Module mounting configurations: S Open style board, factory installed in a drive (not available for all drives) S Open style board as a separate kit S Enclosed style for panel mount or DIN rail mount This section provides mounting information for the Enclosed style and the Open style kit.
  • Page 27 Chapter 3 Installation Figure 3.2 Enclosed Style Communications Module Mounting Location (1336 FORCE and 1336 PLUS Drives) 1336 FORCE SCANport 2 SCANport Cable Communication Module AB0405B 3-11...

  • Page 28: Enclosed Style Communications Module Dimensions

    Chapter 3 Installation Enclosed Style Communications Module Dimensions Figure 3.3 Enclosed Style Communications Module Dimensions 44mm NOTES: (1.75) DIN RAIL DIN RAIL 1. The enclosure requires clearance at the top and bottom for proper cooling. Additional space will be required if access to DIP switches is desired without having to remove the device.

  • Page 29: Cable Connections

    Chapter 3 Installation Cable Connections RS485/RS422/RS232 Connection Examples Figure 3.4 1746-BAS Module Serial Connections Communications Module to 1746-BAS Module PRT1, PRT2 RS232 Mode Port Connection Diagram Communications Module 1746-BAS Module 9-Pin D-Shell Port Connection N.C. N.C. N.C. N.C. N.C. N.C. N.C.
  • Page 30 Chapter 3 Installation Figure 3.5 IBM PC Compatible Serial Connections RS485/RS422/RS232 Communications Adapter to IBM AT Compatible Computer RS232 Serial Port Connection Diagram IBM AT Compatible Communications Module Personal Computer Computer Internal 9-Pin D-Shell RS232 Serial Port Jumper Connectors N.C. N.C.
  • Page 31 Chapter 3 Installation Figure 3.7 SLC 5/03 Serial Connection Options SLC 5/03 CPU 1747-AIC Link Coupler Option #1 Communications Module Option #2 LED Indicators 9-Pin D-Shell RS232 SLC 5/03 Connection Options Option #3 AB0412C Figure 3.8 SLC 5/03 Cable Option #3 RS232 using DF1 Protocol Communications Module 9-Pin D-Shell...

  • Page 32: Scanport Link Connection

    Expander must be subtracted from the cable length used to connect the device to the expander (B1 + C = max 10 meters). 1305 Drive An Allen-Bradley SCANport link cable is used to make the connection between the Communications Module and the drive (Figure 3.9). Figure 3.9...

  • Page 33: 1336 Plus And 1336 Force

    1336 PLUS and FORCE drives with an open Communications Module mounted in the drive, no separate SCANport cable connection is required. SMP 3 An Allen-Bradley SCANport cable is used to make the connection between the Communications Module and an SMP3. Figure 3.10 SCANport Connection on Communications Module...

  • Page 34: Power Supply Connections

    Chapter 3 Installation Power Supply Connections The Enclosed Communications Module is powered from a separate 24V DC or 115V AC power supply (Figure 3.11). With the Open style Communications Module board mounted in the drive, no separate power supply connections are required. Figure 3.11 Typical Power Supply Connection 115/230V...

  • Page 35: Chapter Objectives

    Chapter SCANport Datalink Operation Chapter Objectives In this chapter, you will read about: S Configuring the SCANport device Datalinks. S Datalink Operation. SCANport Datalinks A Datalink is a type of pointer used by some SCANport devices to transfer information to the drive. Datalinks allow parameter values to be written when the Logic Command and Reference are sent to the drive.
  • Page 36 Chapter 4 Configuration and Interfacing This Page Intentionally Left Blank.
  • Page 37 Chapter Configuration and Interfacing Chapter Objectives The purpose of this chapter is to provide you with information on how the Communications Module communicates with a serial device. The following topics will be explained: S Communications Module data table structure S Data transfer through the Communications Module S Block transfer emulation ATTENTION: It is recommended that when a system is configured for the first time, that the motor be disconnected from...
  • Page 38 Chapter 5 Configuration and Interfacing Table 5.A PCCC Commands Supported by the Communications Module Command Name PLC Addressing Method Code Code Unprotected Read PLC-2 Address Echo Read Diagnostic Counters Variable (modified PLC-2 addresses) Set Variables (#ENQs, #NAKs, TIMEOUT) Identify Host and Some Status Set Timeout Set #NAKs Set #ENQs...
  • Page 39 Chapter 5 Configuration and Interfacing Table 5.B Data Table Structure for PLC-5 Style Addressing Parameter Description of PLC-5 Style Address Number Location’s Purpose 1 – 999 N10:1 – 999 1000 – 1999 N11:0 – 999 Parameter Value 8000 – 8999 N18:0 –...
  • Page 40 Chapter 5 Configuration and Interfacing Table 5.C Data Table Structure for PLC-2 Style Addressing Parameter PLC-2 Style Address Description of Number Decimal (Octal) Location’s Purpose 512 + Parm # 1 – 7039 Parameter Value Read (1001 to 16577) (16600 to 16777) Status of Last Parameter Write 7680 + Parm # 1 –...
  • Page 41 Chapter 5 Configuration and Interfacing Table 5.D Data Table Structure for SLC-500 Style Addressing Parameter Description of SLC-500 Style Address Number Location’s Purpose 1 – 249 N50:1 – 249 250 – 499 N51:0 – 249 500 – 749 N52:0 – 249 Parameter Value 9250 –...
  • Page 42 Chapter 5 Configuration and Interfacing The data tables have up to eight areas, each having a different purpose. 1. Parameter Value Read or Write. Reading data from files in this area will cause the Communications Module to read parameter values from the SCANport device and send those values as the response to the read message.
  • Page 43 Chapter 5 Configuration and Interfacing 6. Communications Module Parameters. Each of the four elements in this area can be read or written and affects the operation of the 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.
  • Page 44 Chapter 5 Configuration and Interfacing Configuration Examples DF1 Messaging with a PLC-5/80 Example (Read Parameters 1 through 50) Ladder rung example for Gx2 manual Rung 2:0 | I:000 MG20:0 +MSG––––––––––––––––––––+ +––] [–––]/[–––[ONS]––––––––––––––––––––––––––––+SEND/RECEIVE MESSAGE +–(EN)–+ |Control block MG20:0+–(DN) | +–(ER) | +–––––––––––––––––––––––+ Data Table Report MESSAGE INSTRUCTION DATA MONITOR FOR CONTROL BLOCK MG20:0...
  • Page 45 Chapter 5 Configuration and Interfacing Notes: 1. I:000/00 is any application related conditioning logic. 2. MG20:0.EN is the “enabled” status bit from the message block. 3. B3/2 is a one-shot and causes the message to be resent each time the message block completes or errors (as long as I:000/00 is true).
  • Page 46 Chapter 5 Configuration and Interfacing DF1 Messaging with a 1746-BAS Module Example (Write 10 Parameters then read 10 parameters) REM –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– REM This file is a program for the 1746–BAS module. REM It performs a PLC2 Unprotected Write (08) followed by REM a PLC2 Unprotected Read (01) over the DF1 link on port #2 REM ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––...
  • Page 47 Chapter 5 Configuration and Interfacing 530 PUSH 2 : REM Data Source (2 = Internal String) 540 PUSH 0 : REM Offset in M0 file (Not used in this example) 550 PUSH 1 : REM Internal String Number 560 CALL 123 570 POP S 580 IF (S<>0) THEN PRINT ”Unsuccessful PLC2 Unprotected Write”...
  • Page 48 Chapter 5 Configuration and Interfacing This Page Intentionally Left Blank. 5-12...
  • Page 49 LED indicators on the front of the device (Figure 6.1). The Communications Module is a non-serviceable device that should be returned to Allen-Bradley for replacement when a major fault exists that is attributable to the Communications Module itself.
  • Page 50 Chapter 6 Troubleshooting ATTENTION: Do not attempt to defeat or override fault circuits. The cause of a fault indication must be determined and corrected 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.
  • Page 51 This module is intended for use with devices that communicate via RS232, RS422, or RS485 hardware standards using the DF1 protocol. It is intended to provide a means for transmitting messages between these serial- communications devices and Allen-Bradley SCANport devices.
  • Page 52 Chapter 7 Specifications This Page Intentionally Left Blank.
  • Page 53 Notes...
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  • Page 62 Notes N-10...
  • Page 63 By filling out this form you can help us provide the most useful, thorough, and accurate manuals available. Please take a few minutes to tell us what you think. Then mail this form, FAX it, or send comments via E-Mail. FAX: to your local Allen-Bradley Sales Office or 414/512-8579 E-Mail: via Internet to “SEPATTERSON@ra.rockwell.com” PUBLICATION NAME PUBLICATION NUMBER, DATE AND PART NUMBER (IF PRESENT) CHECK THE FUNCTION THAT MOST CLEARLY DESCRIBES YOUR JOB.
  • Page 64 FOLD HERE FOLD HERE NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST CLASS PERMIT NO. 413 MEQUON, WI POSTAGE WILL BE PAID BY ADDRESSEE ALLEN-BRADLEY Attn: Marketing Communications P.O. Box 760 Mequon, WI 53092-9907...
  • Page 65 Index Index Factory Switch Settings, 3-2 Cable Connections, 3-13 Firmware Cable Requirements, 3-16 Support, 1-1 Versions, 1-1 Communications Module Basic Operation, 5-1 Compatibility, 7-1 Configuration Examples, 5-8 Configuration Switches, 2-5 LED Locations, 6-1 Configurations, 2-1 Data Table Structure, 5-1 LED Troubleshooting Table, 6-2 Definitions, 5-6 PLC-2 Style Addressing, 5-4 PLC-5 Style Addressing, 5-3...
  • Page 66 Index Parity Selection, 3-7 Serial Device Point-to-Point Selection, 3-6 Compatibility, 1-3 Configurations, 2-1 Switch SW3 Settings Application Timeout Default Value, 3-9 Setting Configuration Switches, 3-1 Datalink A, 3-8 SLC-500 Style Addressing, Data Table Structure, 5-5 Datalink B, 3-8 Datalink C, 3-8 Special Terms, 1-1 Datalink D, 3-9 Specifications, 7-1...
  • Page 67 SCANport is a trademark of Allen-Bradley Company, Inc.
  • Page 68 Publication 1203-5.2 May, 1995 P/N 74001-014-01(B) Supersedes 1203-5.2 April, 1995 Copyright 1994, Allen-Bradley Company, Inc. Printed in USA...

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