Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 150)

150 Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 12 Block Transfers with the 1756-DHRIO or 1756-DHRIOXT Module
Block Transfers to Remote
1771-ASB I/O Modules
through a
1756-DHRIO or 1756-
DHRIOXT Module in a Remote
Chassis This application enables a ControlLogix controller to write block transfers to
remote 1771-ASB I/O modules through a 1756-DHRIO or 1756-DHRIOXT
module in a remote chassis over a ControlNet link. The following diagram
illustrates the steps you follow to use this application.
Configure the Module Switches
In this application, channel B on the 1756-DHRIO or 1756-DHRIOXT
module must be set for RIO. Channel A can be used for remote I/O or DH+,
regardless of the usage assigned to channel B.
Set the switches on the 1756-CNB modules to the correct network addresses.
The 1756-CNB module in system number 1 uses network address 01 and the
1756-CNB module in system number 2 uses network address 23.
1756-CNB
Network Address: 01 ControlLogix Controller 1756-CNB
Network Address: 23 1756-DHRIO
1771-ASB
Rack Number: 025