Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 70)

70 Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 5 Messaging Between PLC-5 and SLC 5/04 Controllers
DH+ Messaging: SLC 5/04
Controllers with Two
Modules in One ControlLogix
Chassis This application sends a DH+ message from SLC 5/04 controller A through two
1756-DHRIO or 1756-DHRIOXT modules in the same chassis to SLC 5/04
controller B. Remote DH+ messaging is required to send the message.
The following figure illustrates the steps you must use in this application.
ControlLogix Chassis
1756-DHRIO
SLC /504 Controller A
Node Number: 015
DH+ Link
Link ID 1
SLC 5/04 Controller B
Node Number: 025
19765
1756-DHRIO
DH+ Link
Link ID 2
Channel B
Node Number: 020
Channel B
Node Number: 030