Allen-Bradley | 1756-EN2TR |ControlLogix

Product Description: Allen-Bradley 1756-EN2TR

The Allen-Bradley 1756-EN2TR is a high-performance dual-port EtherNet/IP communication bridge module designed for ControlLogix systems. It enables high-speed communication between controllers, I/O, HMIs, and other Ethernet devices. The dual-port design supports Device Level Ring (DLR) topology for network redundancy and improved system availability. With support for multiple CIP connections and secure firmware updates, the 1756-EN2TR provides robust and scalable Ethernet networking within Rockwell Automation architectures.

Key Features

• Two RJ45 Ethernet ports for DLR or linear topology
• Supports up to 256 CIP connections
• Supports multicast and unicast messaging
• Supports HMI, I/O, peer-to-peer, and controller messaging
• Compatible with Studio 5000 Logix Designer
• Real-time diagnostics and network status monitoring
• Supports redundancy protocols and secure firmware upgrades
• Requires a 1756 ControlLogix chassis and power supply

Technical Specifications

• Ports: 2 x RJ45 (10/100 Mbps full duplex)
• Protocol: EtherNet/IP
• Maximum CIP Connections: 256
• Packet Rate: Up to 10,000 packets per second
• Backplane Current Draw: 1.2 A @ 5.1V DC
• Isolation: 30V (between Ethernet and backplane)
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Relative Humidity: 5% to 95% non-condensing
• Dimensions (H x W x D): Approx. 145 mm x 35 mm x 140 mm
• Certifications: UL, CE, CSA, ATEX, IECEx, RCM

Application Areas

• High-speed controller-to-controller networking
• Real-time I/O over EtherNet/IP
• HMI and SCADA communication
• Redundant ring topologies with DLR
• Large distributed automation systems
• Remote device and diagnostics access

Advantages

• Enables flexible and redundant EtherNet/IP network topologies
• Reduces downtime with DLR and real-time fault detection
• Supports large-scale communication with high connection capacity
• Integrated into the Logix architecture for seamless configuration
• Secure and scalable for future network expansion