The Allen-Bradley 1756-CNB is a ControlLogix communication module that operates as a ControlNet Bridge. It provides seamless communication between ControlLogix controllers and other ControlNet-enabled devices within an industrial network. The module is equipped with one (1) BNC connector for non-redundant media operation and one (1) Network Access Port (NAP) featuring an RJ-45 8-pin shielded interface. The 1756-CNB ensures reliable data exchange and efficient network performance, making it suitable for distributed control and real-time communication applications in ControlLogix systems.