Communication Protocol: The module supports the EtherNet/IP protocol, which is an industrial automation protocol based on the standard TCP/IP protocol suite. It allows for real-time control and information exchange between various devices on the network.

Dual-Port Ethernet: The 1756-EN2TR module has two Ethernet ports, which allow for network redundancy and increased resiliency. It supports 10/100 Mbps data rates and can automatically negotiate the connection speed.

EtherNet/IP Scanner/Adapter: The module can operate in two different modes: Scanner and Adapter. In Scanner mode, it can initiate and control communication with other connected devices on the network. In Adapter mode, it allows the ControlLogix controller to be configured as an EtherNet/IP device for communication with other systems.

Integrated Web Server: The module includes a built-in web server, which allows users to access diagnostic and configuration information through a web browser. This feature simplifies module setup and troubleshooting.

Diagnostics and Status Indicators: The 1756-EN2TR module provides diagnostic information, such as connection status, throughput statistics, and error counters. It also has status indicators that provide visual feedback on the module's operational state.

Module Configuration: The module's configuration can be done using Rockwell Automation's Logix Designer software, which is part of the Studio 5000 Integrated Development Environment (IDE). The software allows users to configure communication settings, set up connections to other devices, and manage network-related parameters.