Allen-Bradley 1756-DHRIO - DH+ Messaging: PLC-5 to One ControlLogix Controller With One ControlLogix Chassis

Publication 1756-UM514B-EN-P - February 2003
5-2 Messaging Between PLC-5s or SLC5/04s and ControlLogix Controllers
DH+ Messaging: PLC-5 to
One ControlLogix Controller
With One ControlLogix
Chassis
This application sends a DH+ message from PLC-5/60 processor A
through a 1756-DHRIO module to ControlLogix controller B. Local
DH+ messaging may be used to send the message.
Figure 5.1 illustrates the steps you must use in this application:
Figure 5.1
IMPORTANT
Local DH+ messaging can only send DH+ messages
to one ControlLogix controller per DH+ channel. See
the application on
page 5-5 if you want to send DH+
messages to multiple ControlLogix controllers in the
chassis.
1756-DHRIO
Slot number: 3
PLC-5/60 processor A
Node number: 005
DH+ link
Link ID 1
41283
Set the Module
Switches
page 5-3
Set-Up
Controller Slot
page 5-3
Configure Msg
Instruction
s
page 5-4
Channel A
Node number: 010
ControlLogix controller
Slot number: 1
123
IMPORTANT
For this application, the 1756-DHRIO module only
needs a controller slot programmed if the
ControlLogix controller is not located in the default
slot (0) of the ControlLogix chassis.