Allen-Bradley 1756-DHRIO - DH+ Messaging: PLC-5 to Multiple ControlLogix Controllers in One ControlLogix Chassis

Publication 1756-UM514B-EN-P - February 2003
Messaging Between PLC-5s or SLC5/04s and ControlLogix Controllers 5-5
DH+ Messaging: PLC-5 to
Multiple ControlLogix
Controllers in One
ControlLogix Chassis
This application sends a DH+ message from PLC-5/60 processor A
through a 1756-DHRIO module to multiple ControlLogix controllers.
Figure 5.4 illustrates the steps you must use in this application:
Figure 5.4
IMPORTANT
In this example, we use both 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, see Step 2.)
Remote DH+ messaging is used to send a message to
ControlLogix controller B. Separate message
instructions must be configured in RSLogix 5 for each
ControlLogix controller.
DHRIO module
Slot number: 3
Channel A
Node number: 010
PLC-5/60 processor A
Node number: 005
DH+ link
Link ID 1
41283
Set the Module
Switches
page 5-6
Set-Up
Controller Slot
page 5-6
Set-Up Routing
Table
page 5-7
ControlLogix controller A
Slot number: 1
Node number: 015
Configure Local
Msg Instructions
page 5-7
Configure Remote
Msg Instructions
page 5-8
ControlLogix controller B
Slot number: 2
Node number:020
ControlLogix chassis
Link ID 2
123
45