Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module User Manual
Page 83
Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
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Messaging Between PLC-5 or SLC 5/04 Controllers and ControlLogix Controllers
Chapter 6
DH+ Messaging: PLC-5 to
Multiple ControlLogix
Controllers in One
ControlLogix Chassis
This application sends a DH+ message from PLC-5/60 controller A through a
1756-DHRIO and 1756-DHRIOXT modules to multiple ControlLogix
controllers.
The following figure illustrates the steps you must use in this application.
IMPORTANT
In this example, we use local and remote DH+ messaging to send DH+
messages. Local DH+ messaging is used to send a message to ControlLogix
controller A. This processor must be configured as the controller slot.
Remote DH+ messaging is used to send a message to ControlLogix
controller B. Separate message instructions must be configured in
RSLogix 5 software for each ControlLogix controller.
DHRIO Module
Slot Number: 3
Channel A
Node Number: 010
PLC-5/60 Controller A
Node Number: 005
DH+ Link
Link ID 1
41459
ControlLogix Controller A
Slot Number: 1
Node Number: 015
ControlLogix Controller B
Slot Number: 2
Node Number:020
ControlLogix Chassis
Link ID 2