Allen-Bradley 1756-EN3TR ControlLogix EtherNet/IP Communication Bridge Module

The Allen-Bradley 1756-EN3TR is a high-performance communication module designed for the ControlLogix platform. This EtherNet/IP bridge module facilitates seamless data exchange within industrial control systems and features an integrated dual-port switch, allowing for flexible network topologies including Device Level Ring (DLR) and linear configurations.

Features

• Integrated dual-port switch for EtherNet/IP connectivity
• Supports up to 128 axes of motion control
• Optimized for high-speed data transfer and network diagnostics
• Compatible with standard copper-based Ethernet cabling
• Designed specifically for seamless integration into the ControlLogix backplane

Applications

This module is engineered for demanding industrial environments requiring robust communication, such as automated manufacturing, motion control systems, and large-scale process automation where high-speed EtherNet/IP connectivity is critical for system coordination.

Technical Specifications

Installation Guidelines

• Ensure the ControlLogix chassis is powered down before inserting or removing the module.
• Use shielded twisted-pair Ethernet cabling to minimize electromagnetic interference (EMI).
• Verify that the module is fully seated in the chassis slot and secured with the top and bottom latches.
• Adhere to standard ESD (Electrostatic Discharge) handling procedures during installation to prevent damage to internal circuitry.
• Maintain proper ventilation in the control cabinet to ensure the module operates within its thermal limits.

FAQ

What is the primary function of the 1756-EN3TR?
The 1756-EN3TR acts as an EtherNet/IP bridge module, providing connectivity between a ControlLogix controller and an Ethernet network, supporting advanced motion control and standard messaging.

Does this module support DLR?
Yes, the dual-port design supports Device Level Ring (DLR) topologies for enhanced network fault tolerance.