Allen-Bradley 1756-CNBR ControlNet Redundant Bridge Module

The Allen-Bradley 1756-CNBR ControlNet Redundant Bridge Module delivers a redundant, high-speed ControlNet bridge between ControlLogix chassis or distributed control nodes, preserving communication in mission-critical automation environments. It mounts rack-side inside ControlLogix chassis and offers dual ControlNet ports for redundant configuration, enabling automatic failover to maintain real-time control during network faults. Common applications include manufacturing production lines, batch processes, material handling, oil and gas facilities, and utilities automation where fault-tolerant ControlNet communication improves system availability. Compatible with Rockwell Automation ControlLogix I/O and ControlNet networks, it is designed for industrial-rated operating conditions and installation within a control or automation enclosure; common replacements include Allen-Bradley 1756-CNBR/A and Rockwell Automation 1781-CNBR.