Allen-Bradley 1756-CN2R ControlNet Communications Bridge Module

The Allen-Bradley 1756-CN2R ControlNet Communications Bridge Module is a redundant ControlNet interface for ControlLogix systems, combining two ControlNet ports and an integrated repeater in a single bridge module that plugs into a 1756 backplane. It supports up to 99 ControlNet nodes and 131 connections on the network, with a nominal 5 Mbps data rate for reliable bridging between a ControlLogix controller and distant I/O or remote devices. Power is supplied from the backplane, typical consumption of about 1.3 A at 5.1 V (plus a small draw at 24 V) with a total dissipation around 6.7 W, and the unit weighs roughly 0.64 lb (0.29 kg). Operating temperature ranges from -25 to 70 C, making it suitable for demanding industrial environments where uninterrupted ControlNet connectivity is required for remote racks and critical processes.