The Allen-Bradley 1756-EN3TR is a high-performance ControlLogix EtherNet/IP communication module designed to provide robust and high-speed connectivity for industrial automation systems. It features two RJ45 ports that support 10/100/1000 Mbps communication speeds, enabling fast data exchange between controllers, I/O, drives, and other network devices. A key feature of the 1756-EN3TR is its support for Device Level Ring (DLR) topology, which provides network media redundancy to increase system availability and minimize downtime in case of a network fault. This module is ideal for complex control applications requiring reliable, high-bandwidth communication within a ControlLogix architecture.