Allen-Bradley 1756-ENBT EtherNet IP Interface Module

The Allen-Bradley 1756-ENBT is a single-port EtherNet/IP interface module for Rockwell Automation's ControlLogix I/O chassis, delivering 10/100 Mbps copper Ethernet connectivity between the controller backplane and EtherNet/IP devices, enabling reliable, deterministic messaging on industrial networks. It provides one RJ45 copper Ethernet port and supports up to 64 TCP connections and 128 CIP connections, enabling a mix of implicit I/O traffic and explicit communications on a single module. As part of the ControlLogix Ethernet/IP stack, the ENBT bridges the 1756 backplane to Ethernet networks, allowing the controller to exchange I/O data with remote I/O modules, PLCs, HMIs, and other EtherNet/IP-enabled equipment. This 10/100 Mbps ENBT model is the standard single-port option in the 1756 EtherNet/IP module family; other variants such as the dual-port EN2T offer different port counts and higher CIP/TCP capacity.