Wire the module – Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module User Manual
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Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 3
Installing the Modules
Wire the Module
Wire the connectors for the module channels.
.
4.
Connect the module to the programming terminal and Data Highway 
Plus or remote I/O network.
WARNING: If you connect or disconnect the communications cable with 
power applied to this module or any device on the network, an electrical 
arc can occur. This could cause an explosion in hazardous location 
installations.
Be sure that power is removed or the area is nonhazardous before 
proceeding.
Pin Assignments for Channel A and B Connectors
DH+
Remote I/O
Pin Numbers
Description
Pin Number
Description
1
Clear
1
Blue
Shield
Shield
Blue
2
Clear
WARNING: The local programming terminal port is intended for 
temporary use only and must not be connected or disconnected unless 
the area is assured to be nonhazardous.
For hazardous locations, use the following Rockwell Automation cable for 
the programming terminal connection: 1784-U2DHP.
43238
Wiring Label
Channel A and B 
Connectors
8-pin Mini-DIN programming 
terminal connection parallel to 
Channel A when Channel A is 
configure for DH+ communication.
POWER
POWER
43239