Allen-Bradley 1756-ENET ControlLogix Ethernet Communication Module

Overview

The Allen-Bradley 1756-ENET is a 10 Mbps Ethernet communication module for the 1756 ControlLogix chassis.

The recorded configuration includes RJ45 and AUI ports, scanner and adapter modes, explicit messaging, implicit messaging, and direct or rack-optimized connections.

Features

• Dual physical ports including one RJ45 Ethernet port and one AUI (Attachment Unit Interface) port
• Supports both scanner and adapter operational modes for flexible network architectures
• Handles explicit messaging for configuration and programming alongside implicit messaging for real-time I/O data
• Supports rack-optimized and direct connection methods to optimize controller backplane resource utilization
• Occupies a single standard slot width in any 1756 ControlLogix chassis
• Standard open-style industrial enclosure rating

Technical Specifications

Connections / Interfaces

The 1756-ENET module features two distinct physical connection options on the front faceplate to interface with network infrastructure:

• Ethernet Port: Standard RJ45 connection used for connecting to 10 Mbps Ethernet local area networks.
• AUI Port: Attachment Unit Interface port allowing connection via transceiver cables to older network media such as coaxial thicknet or thinnet infrastructures.