Rockwell Automation 1756-CN2_CN2R, Series B ControlLogix ControlNet Interface Module - Manual (Page 7)

ControlLogix ControlNet Interface Module 7
Publication 1756-IN607A-EN-P - February 2008
Example Redundant System
Primary
Chassis
Secondary
Chassis
Redundant
Control Chassis
Pair
Remote I/O Chassis
1756-RM Module
ControlNet
Network
1756-CNB/CNBR
1756-CN2 Module
1756-CN2R Module
1756-CN2R Module
1756-CN2R Module
1756-RM Module
The 1756-CN2 and 1756-CN2R series B modules are supported in
both the local chassis (primary and secondary) and the remote
chassis (I/O chassis) of a ControlLogix redundancy system,
revision 16.5x.
IMPORTANT