Rockwell Automation 1756-ENBT A Ethernet Communication Module

This Ethernet communication module serves as a critical bridge between ControlLogix automation systems and industrial networks. Designed for demanding environments, it facilitates real-time data exchange between controllers, HMIs, and enterprise systems while maintaining robust security protocols. The module’s dual-port architecture enables daisy-chaining devices without requiring additional switches, streamlining network topology in manufacturing and process control applications.

Commonly deployed in automotive assembly lines and oil & gas processing facilities, this module handles critical communication tasks where network reliability is paramount. For instance, a Midwest-based bottling plant successfully integrated multiple 1756-ENBT A modules to synchronize their filler-capper labeling systems, achieving sub-10ms response times across distributed ControlLogix racks. We regularly supply this component alongside complementary Allen Bradley hardware including 1756-L72 controllers and 1756-CNBR communication modules.

Technical Advantages

The module’s dual-port switch architecture allows direct device connection without external networking hardware, reducing system complexity. Its support for 5000 messages/second throughput ensures smooth operation in high-data-density environments like pharmaceutical batch processing systems. Built-in web server functionality enables browser-based diagnostics, while the integrated LED display provides immediate physical layer status verification.

Key compatibility features include seamless integration with RSLogix 5000 software for configuration, support for CIP Security protocols, and redundant ring topologies via Device Level Ring (DLR) implementation. The module maintains backward compatibility with legacy ControlLogix chassis while offering forward-looking support for future network upgrades.