Configure the module switches, Configure message instructions – Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module User Manual
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Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 8
Messaging Between ControlLogix Controllers
Configure the Module Switches
In this application, Channel A on the first and last 1756-DHRIO or
1756-DHRIOXT modules must be set for DH+. The channels on the second
1756-DHRIO or 1756-DHRIOXT module must be set for DH+.
Configure Message Instructions
Use the Studio 5000 environment to configure the ControlLogix controller
message instructions. The following figure shows the message instructions
necessary for this example.
Configuration Tab
Communication Tab
IMPORTANT
When you are using the 1756-DHRIO for CIP messaging, no link ID numbers
are present. You must use an explicit message path.
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