Allen-Bradley ControlLogix 1756-DH485, User Manual, Page: 62 / 110

Publication 1756-UM532A-EN-P - May 2006
6-2 Communicate Between SLC Controllers over DH+ and DH485 Networks
SLC 5/04 Controller Sends a
Remote Message
In this example an SLC 5/04 controller initiates a remote message and sends it
to an SLC 5/03 Controller.
Hardware Configuration
In this hardware configuration, an SLC 5/04 controller sends a remote
message to an SLC 5/03 controller.
•
The SLC 5/04 controller is on a DH+ network (1) .
•
The SLC 5/04 controller connects to Channel B on the 1756-DHRIO
module
(2) .
•
The SLC 5/03 controller connects to Channel A of the 1756-DH485
module in the same rack as the 1756-DHRIO module
(3) .
•
The SLC 5/04 controller sends a remote message to the SLC 5/03
controller on a DH485 network
(4) .
DH+/RIO
DH485
ControlLogix Controller 1756-DHRIO
(2)
1756-DH485
Channel A
(3)
SLC 5/03 Controller
(4)
DH485 network
communicating
through link
couplers.
SLC 5/04 Controller initiates
the message.
(1)
DH+ Network
Channel B
(2)
44063
AIC+
AIC