Allen-Bradley 1756-ENBT EtherNet/IP Network Interface Module

The Allen-Bradley 1756-ENBT EtherNet/IP Network Interface Module is a ControlLogix Ethernet/IP bridge that adds a dedicated 10/100 Mbps Ethernet interface to a backplane-based controller. It provides a single Copper RJ45 Ethernet port (10/100 Mbps) for EtherNet/IP communications and supports up to 64 TCP connections and 128 CIP connections. The module isolates the Ethernet network from the backplane with 30 V continuous isolation and is designed for use in a 1756 chassis slot, with type-tested insulation suitable for rugged industrial environments. Power is drawn from the backplane, with typical consumption around 700 mA at 5.1 V and 3 mA at 24 V. Typical applications include linking ControlLogix systems to EtherNet/IP devices and bridging data between the Ethernet/IP network and the controller backplane for I/O and explicit messaging, enabling reliable data exchange across industrial networks.