Allen Bradley Communication Module 1756-EN2TR


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  • Manufacturer: Allen Bradley – PLC
  • Product Type: Communication module
  • Part Number: 1756-EN2TR
  • Series: 1756 ControlLogix/GuardLogix
  • UPC: 10612598547736
SKU: 1756-EN2TR Category:


The 1756-EN2TR is a communication module belonging to the 1756 ControlLogix series. It is designed to create communication links between various electrical machines and can operate as an Ethernet or IP network. The module provides an Ethernet and IP bridge with an embedded switch and copper supports and can work as an adapter for remote links and a communication device with other Ethernet and IP devices. Additionally, it operates as a bridge to route messages and signals to other devices or networks.

  • Communication: Ethernet/IP
  • Ethernet/IP Communication Rate: 10/100 Mbps twisted pair
  • Integrated Ports: 2 RJ45 and 1 USB
  • Slot Width: 1
  • Enclosure: Open
  • Power Dissipation: 5.1 W
  • Current Rating: 1.2 Amps
  • Backplane Current (5Volts): 1 amp
  • Insulation Voltage: 30 Volts Continuous

The 1756-EN2TR module offers two Ethernet RJ-45 Category 5 ports and one USB 1.1, full speed, 12 Mbps port, with the option to use shielded or unshielded cables. It supports linear topologies and device level ring topologies, has 128 TCP connections and 256 CIP connections, and draws 1 Ampere at 5.1 Volts DC, with a power dissipation of 5.1 Watts and an isolation voltage of 30 Volts. The module can operate in environmental conditions between zero (0) and 60 degrees Celsius and in a relative humidity between 5 and 95% without condensation.

The 1756-EN2TR can be used to create interaction linkages between various devices and allows you to send messages to other Allen-Bradley controllers including the SLC 500, PLC-5, and MicroLogix. It can also communicate with Allen-Bradley’s Human Machine Interfaces (HMI), Supervisory Control and Data Acquisition (SCADA), and third-party devices. It can be partnered with third-party gateways, converters, and devices, as well as partner modules. The module provides embedded Ethernet connectivity for computers and programming workstations, eliminating the need for costly communication adapters to connect to the controller.

The 1756-EN2TR is an Ethernet/IP dual port interface communication module that supports general messaging, real-time I/O messaging, and information exchange for applications such as Real-Time Control, Time Synchronization, and Motion. It can support a maximum of 8 axes for integrated motion on the Ethernet/IP Network and draws 1 A current at 5.1V DC. It has a maximum power dissipation of 5.1 W and thermal dissipation of 17.4 BTU/hr. It can be installed in any slot in the ControlLogix Chassis, using unshielded RJ45, category 5, twisted-pair cable connectors to interface with the controller.

The 1756-EN2TR bridge has various functions, such as providing support for messaging, distributed I/O, and tags, and encapsulating messages within standard TCP/IP protocol. It supports explicit protected mode, electronic keying, Device Level Ring Network, and Parallel Redundancy Protocol Network support. The 1756-EN2TR is especially designed for use in redundant Ethernet networks and supports Ring and Star topology with qualified partner devices.

Additional information

Weight 0.48 kg


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