The Allen-Bradley 1756-CNBR is a ControlLogix redundant ControlNet bridge module that installs in a ControlLogix chassis to connect a ControlNet network to the controller. It operates at 5 Mbps and provides 40–48 connections (any combination of scheduled and unscheduled) for ControlNet devices. As a redundant bridge, it supports dual-path networking to improve availability in ControlLogix systems.
