Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 54)

54 Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 4 Using Programming Software in DH+ Applications
Studio 5000 Environment DH+ Application Example
The following figure shows an example DH+ application where PLC-5/25
processor A writes data, via a message instruction and the 1756-DHRIO or
1756-DHRIOXT module, to PLC-5 processor B.
ControlLogix Chassis
1756-DHRIO
PLC-5/25 controller A
Node Number: 015
DH+ Link
Link ID 1
PLC-5 controller B
Node Number: 025
41363
Channel A
Node Number: 010
Channel B
Node Number: 020
DH+ Link
Link ID 2