Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 90)

90 Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 7 Messaging Between ControlLogix Controllers and PLC-5 or SLC 5/04 Controllers
Local DH+ Messaging:
ControlLogix Controller
in One Chassis to a PLC-5 This application sends a DH+ message from a ControlLogix controller A
through a 1756-DHRIO or 1756-DHRIOXT module to a PLC-5 controller B
on a DH+ link. Local DH+ messaging can be used to send the message. In this
case, local DH+ messaging is used.
The following figure illustrates the steps you must use in this application.
1756-DHRIO
PLC-5/60 Controller A
Node Number: 015
DH+ Link
Link ID 1
41284
Channel A
Node Number: 010
ControlLogix Controller
Slot Number: 0
IMPORTANT When you are using local DH+ messaging between a ControlLogix
controller and a PLC controller, you do not need a routing table. The
default setting on the module out of the box is to have no routing table
configured.
However, if a routing table is programmed, verify it is programmed
correctly or a configuration fault can occur.
Also, controller slot values for channels that are configured for DH+ are
applied or restored to default value, by using the software tabs. Failure to
enter the correct value generates a configuration fault for that channel.