1756-EN2TR | Allen-Bradley ControlLogix Ethernet Module Supplier

What Is the 1756-EN2TR?

When network reliability is critical, the 1756-EN2TR from Allen-Bradley delivers dual-port Ethernet/IP connectivity for ControlLogix platforms. This module supports 10/100 Mbps communication rates and integrates seamlessly into any chassis slot. It is designed for real-time control, time synchronization, and motion applications.

Key Features & Technical Specs

• Backplane current draw: 1 amp at 5 Volts and 3 milliamps at 24 Volts.
• Integrated ports: two RJ45 and one USB 1.1 for flexible connectivity.
• Power consumption: 5.1 Watts with thermal dissipation of 21.28 BTU per hour.
• Insulation voltage: 30 Volts continuous for reliable isolation.
• Operating temperature range: 32 to 140 degrees Fahrenheit (0 to 60 degrees Celsius).
• Supports up to 128 TCP/IP connections and 256 CIP connections.
• Supports up to 8 axes for integrated motion on Ethernet/IP.

One standout spec is the dual-port RJ45 design, which enables redundant Ethernet networks. This feature minimizes downtime and enhances system availability, a key benefit for maintenance engineers.

Industry Applications

In manufacturing plants, the 1756-EN2TR connects distributed I/O, HMIs, and SCADA systems over Ethernet/IP. It also supports messaging to legacy controllers like SLC 500 and PLC-5. For motion control, it handles up to 8 axes, making it suitable for packaging and assembly lines.

Installation Guide

Install the 1756-EN2TR in any ControlLogix chassis slot. Use Category 5 or 6 twisted-pair cables for RJ45 connections. Configure the IP address using the BOOTP-DHCP tool. No scheduling or routing tables are required, simplifying setup.

Routine Care

Inspect the module periodically for dust accumulation and ensure ambient temperature stays within 0 to 60 degrees Celsius. Verify that all RJ45 connections are secure. Follow the manufacturer's manual for detailed maintenance procedures.

Compatible Systems

The 1756-EN2TR works with ControlLogix, CompactLogix, Flex I/O, and POINT I/O adapters. It also communicates with third-party gateways and HMI products. The module supports ring and star topologies with qualified partner devices.

Common Questions

Q: How many TCP/IP connections does the 1756-EN2TR support?

A: It supports up to 128 TCP/IP connections simultaneously.

Q: What is the backplane current draw at 24 Volts?

A: The backplane current draw is 3 milliamps at 24 Volts.

Q: Can the 1756-EN2TR be used in redundant networks?

A: Yes, its dual RJ45 ports support redundant Ethernet networks.

Q: What is the operating temperature range?

A: The module operates from 32 to 140 degrees Fahrenheit (0 to 60 degrees Celsius).

Q: Does it support motion control?

A: Yes, it supports up to 8 axes for integrated motion on Ethernet/IP.

Product Support & Availability

The 1756-EN2TR is in stock and ready to ship from Petro Auto Tech. Contact our team for current lifecycle status and ordering details.