Allen-Bradley 1756-EN2TR ControlLogix EtherNet/IP Communication Module

Description

The Allen-Bradley 1756-EN2TR is a high-performance EtherNet/IP communication module designed for the ControlLogix platform. This module features two integrated RJ45 ports, allowing for flexible network topologies including linear, star, and Device-Level Ring (DLR) configurations. By supporting DLR, the module enables media redundancy, ensuring network continuity without requiring external switches. It is engineered for robust data exchange in demanding industrial environments, providing reliable connectivity for real-time I/O messaging and explicit messaging.

Features

• Dual-port Ethernet interface supporting 10/100 Mbps communication speeds.
• Supports linear, star, and DLR (Device-Level Ring) network topologies.
• Capacity for up to 128 TCP/IP connections and 256 CIP connections.
• Integrated USB port for temporary local configuration and firmware updates.
• Designed for seamless integration within the ControlLogix chassis environment.
• Optimized for high-speed data processing with support for extensive I/O packet rates.

Applications

• Automated assembly, welding, and painting lines in the automotive industry.
• SCADA and remote monitoring systems for energy management and water treatment facilities.
• High-speed packaging and filling equipment in food and beverage production.
• Marine and offshore control systems, including dynamic positioning and vessel monitoring.

Technical Specifications

Installation Guidelines

• Ensure the ControlLogix chassis is powered down before inserting or removing the module.
• Use shielded Category 5 Ethernet cabling to minimize EMI interference in industrial settings.
• The USB port is intended for temporary configuration only; do not utilize it in hazardous area applications.
• When using this module in a chassis alongside legacy 1756-ENBT modules, avoid "Rack Optimized" communication formats to prevent potential data conflicts.
• Ensure adequate ventilation around the chassis to maintain operating temperatures within the specified 0 to 60 degC range.

FAQ

Does the 1756-EN2TR support media redundancy?

Yes, the module supports Device-Level Ring (DLR) topology, which provides media redundancy for critical network applications.

What is the primary function of the USB port?

The USB port is designed exclusively for temporary local configuration and programming. It is not intended for permanent connection or use within hazardous locations.

Can this module communicate with older ControlLogix modules?

Yes, but ensure that communication formats are compatible. If using legacy 1756-ENBT modules in the same rack, it is recommended to avoid "Rack Optimized" settings to ensure system stability.