Allen-Bradley 1756-EN4TRXT EtherNet Interface Module

The Allen-Bradley 1756-EN4TRXT is a dual-port EtherNet/IP communication module designed for Rockwell's ControlLogix automation platforms, providing wired Ethernet connectivity between a controller and EtherNet/IP devices on a plant network. It offers two copper RJ45 ports that support 10 Mbps, 100 Mbps, and 1 Gbps twisted-pair Ethernet, enabling flexible network topologies and high-throughput messaging. The module sustains up to 512 TCP connections and can support communications across as many as 256 axes, making it suitable for demanding multi-device applications. Built for harsh environments, the EN4TRXT variant denotes extended-temperature operation for reliability in challenging conditions. In application, it functions to bridge EtherNet/IP links and route messages to devices on other networks, expanding the ControlLogix network without adding I/O control at the module level.