Allen-Bradley 1756-EN2TR 2-Port EtherNet/IP Interface Module

The Allen-Bradley 1756-EN2TR is a dual-port EtherNet/IP interface module for ControlLogix backplanes, providing two RJ45 Ethernet ports that operate at 10/100 Mbps to connect the controller to external EtherNet/IP networks. It installs in a 1756 chassis in any slot and supports up to 128 TCP connections, enabling data exchange with many Ethernet/IP devices such as PLCs, HMIs, and industrial PCs. The EN2TR is designed for redundancy in Ethernet/IP networking, offering dual-path options to improve availability on factory networks. Electrical and environmental specs include a 30 V continuous isolation voltage, power consumption around 5.1 W, backplane current of 1 A at 5 V and 3 mA at 24 V, and an operating temperature range of 32–140 °F (0–60 °C). Each port is a copper RJ45 interface, and the module uses the ControlLogix chassis backplane for EtherNet/IP communications.