Preface
Using This Manual
Preface Objectives
Read this preface to familiarize yourself with the rest of the manual. 
In this preface, you will read about the following:
• Intended audience for this manual.
• Purpose of this manual.
• Firmware supported by this manual.
• Terms and abbreviations.
• Safety precautions.
• Rockwell Automation support.
Audience for This Manual
Use this manual if you are responsible for setting up and using a 
Remote I/O communications module (Bulletin numbers 1203-GD1, 
1203-GK1, or 1336-GM1). You must have previous experience with 
and a basic understanding of communications terminology, 
configuration procedures, required equipment, and safety precautions.
To use this Remote I/O communications module efficiently, you must 
be able to program and operate programmable controllers as well as 
have a basic understanding of the parameter settings and functions of 
the SCANport™ product with which you are communicating.
Purpose of This Manual
This manual is an installation and user guide for the Remote I/O 
communications module. The 1203 Remote I/O communications 
modules are available for products that include SCANport. 
This manual provides the following information:
• An overview of the Remote I/O communications module.
• Procedures that you need to install, configure, and troubleshoot 
the Remote I/O communications module.
• Example ladder logic programs for controlling a product and 
using block transfer messages.
Important:
You should read this manual in its entirety before 
configuring, installing, operating, or troubleshooting the 
Remote I/O communications module.
Firmware Support
This manual supports firmware versions 1.xx to 4.xx (the “xx” 
designator may vary). Features that work with specific firmware 
versions will be identified.
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