Allen-Bradley 1756-EN2TR EtherNet/IP Communication Module

The Allen-Bradley 1756-EN2TR EtherNet/IP Communication Module provides dual RJ45 Ethernet ports with Device Level Ring (DLR) redundancy, enabling fast EtherNet/IP networking for ControlLogix controllers, distributed I/O, drives, and other automation devices. It mounts in a ControlLogix chassis slot and supports 10/100 Mbps speeds, up to 256 TCP/IP connections, and network topologies including DLR, Linear, and Star, with 1 A backplane current at 5.1 V DC and operating temperatures from 0 to 60 °C; LED indicators show module and network status. Commonly used in manufacturing lines, conveyor/material handling systems, packaging equipment, water and wastewater facilities, and general process control environments where reliable Ethernet communication is required; common replacements include 1756-ENBT, 1756-EN3TR, and 1756-EN2T.