Product Overview
The A-B 1756-EN2TXT is a high-performance Ethernet interface module designed for use with Allen-Bradley’s ControlLogix series of programmable automation controllers (PACs). This module enables seamless integration of ControlLogix systems into Ethernet networks, providing high-speed, reliable communication between the PAC and other devices within a plant or facility.
The A-B 1756-EN2TXT supports advanced networking capabilities, including support for TCP/IP and UDP protocols, making it ideal for connecting to a wide range of devices such as sensors, I/O modules, HMIs, and other PLCs. Its built-in web server allows for remote monitoring and diagnostics, which can significantly improve system maintenance and troubleshooting.
With a user-friendly interface and robust performance, the A-B 1756-EN2TXT offers unmatched flexibility for building scalable and distributed control systems. Whether you’re managing a complex manufacturing process or an integrated automation system, this module provides the communication backbone needed for real-time data exchange and remote access.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | A-B 1756-EN2TXT |
| Manufacturer | Allen-Bradley |
| Product Type | Ethernet Interface Module |
| Supported Protocols | TCP/IP, UDP |
| Port Configuration | 2 Ethernet Ports (Auto-sensing) |
| Ethernet Speed | 10/100/1000 Mbps |
| Mounting | ControlLogix Chassis |
| Operating Temperature | 0°C to +60°C |
| Power Supply | 24V DC |
Key Features and Benefits
High-Speed Ethernet Communication
The A-B 1756-EN2TXT module supports 10/100/1000 Mbps Ethernet speeds, ensuring high-speed, reliable communication for demanding automation systems. This capability makes it ideal for high-performance industrial applications where quick data transfer and minimal latency are crucial for operational efficiency.
Dual Ethernet Ports for Redundancy

Equipped with two Ethernet ports, the A-B 1756-EN2TXT allows for network redundancy through the use of a daisy-chained or ring topology. This redundancy helps ensure uninterrupted communication even if one Ethernet link fails, improving system reliability and uptime in critical applications.
Integrated Web Server for Remote Monitoring
The A-B 1756-EN2TXT comes with a built-in web server that enables remote access for monitoring, diagnostics, and configuration. Users can view real-time system data, perform troubleshooting, and adjust settings from any device with a web browser, making it easier to maintain and optimize the network remotely.
Seamless Integration with ControlLogix Systems
As part of the ControlLogix family, the A-B 1756-EN2TXT integrates seamlessly into existing ControlLogix systems. This compatibility allows for easy configuration and management, reducing the time and effort required to set up and maintain complex control networks.
Advanced Diagnostics and Monitoring
The module provides robust diagnostic capabilities that help monitor the health and performance of the network. With built-in tools for troubleshooting and fault detection, it ensures proactive maintenance and minimizes downtime, enhancing overall system reliability.
Flexible Network Design
Supporting both TCP/IP and UDP communication protocols, the A-B 1756-EN2TXT module offers great flexibility for connecting a variety of devices and systems within an Ethernet network. It can be used for both simple and complex applications, adapting to various network designs as needed.
Related Models
- 1756-EN2TR – A similar Ethernet interface module with additional security features and more advanced network management options for high-security environments.
- 1756-EN3TR – A higher-performance module with support for advanced networking protocols and greater bandwidth capabilities, suitable for large-scale automation systems.
- 1756-EN2T – A more basic version of the 1756-EN2TXT, offering Ethernet communication with fewer advanced features, ideal for standard network communication.
- 1756-EN2F – A fiber optic Ethernet module that provides long-distance communication for applications requiring greater distances or immune to electrical noise.
- 1756-EN1 – The first-generation Ethernet module for ControlLogix systems, providing Ethernet connectivity at lower speeds and without the advanced features of the 1756-EN2TXT.
Feel free to ask for further details on the A-B 1756-EN2TXT or its related models!


Leave a comment
Your email address will not be published. Required fields are marked *