Chapter
2
Configuring the Module
Chapter Objectives
Chapter 2 provides instructions and information for configuring the 
Remote I/O communications module (1203-GD1, 1203-GK1, or 
1336-GM1). In this chapter, you will read about the following:
• Factory-default settings.
• Recording the I/O image table.
• Configuring the module.
Important:
The communications module is not compatible with 
complementary I/O configurations because it uses both 
output and input image words for proper product control.
Safety Precautions and 
Important Information
Please observe the following safety precautions:
Important:
Due to an anomaly in firmware release 4.01, Remote I/O 
modules that are used only for block transfer messages 
require the following configuration: switches for block 
transfer and reference/feedback should both be enabled 
(SW 3.1 and SW 3.3 are ON. SW 3.2 and SW 3.4 through 
3.8 are OFF). 
This configuration prevents a fault on power up. It does not 
affect rack I/O allocation or the ladder logic program 
because it still fits within 1/4 rack I/O space. The drive will, 
however, generate a serial fault if the communications 
module is disconnected or loses power.
!
ATTENTION: Hazard of equipment damage exists. When 
you make changes to the switch settings, use a blunt, pointed 
instrument. Do not use a pencil or pen.
!
ATTENTION: Hazard of injury or equipment damage 
exists. Failure to check connections and switch settings for 
compatibility with your application could result in 
unintended or undesirable operation. Verify the 
configuration is correct for your application.
!
ATTENTION: Hazard of injury or equipment damage 
exists. Unintended or incorrect machine motion can result 
from the initial configuration. When a system is configured 
for the first time, the motor must be disconnected from the 
machine or process during initial system testing.
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