Description

Technical Specifications

• Product Model: 1756-EN2TR
• Brand: Allen‑Bradley (Rockwell Automation)
• Warranty: One Year
• Backplane Power Draw: 1A @ 5.1VDC, 3mA @ 24VDC, total power dissipation 5.1W
• Operating Temperature: 0°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Relative Humidity: 5%–95% non-condensing
• Protection Class: IP20 open chassis design, installed in ControlLogix 1756 rack
• Ethernet Interfaces: 2× RJ45 copper ports, auto-sensing 10/100 Mbps
• Network Topology: Supports DLR (Device Level Ring), linear and star topology
• Connection Capacity: Max 128 TCP connections, 256 CIP connections, drives up to 8 CIP Motion servo axes
• Onboard Port: Front USB mini port for local program upload and diagnostics
• Isolation Rating: 980VAC isolation between Ethernet and backplane bus
• Shock & Vibration: 30G shock resistance, 2G vibration at 10–500Hz
• Mounting: Single-slot plug-in installation on standard 1756 ControlLogix chassis
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Product Overview

The 1756-EN2TR is a high-performance dual-port EtherNet/IP communication bridge module for Rockwell ControlLogix 5570 series PLC platforms. It solves critical industrial networking pain points including single Ethernet point-of-failure, limited motion axis driving capacity, complicated ring network configuration, and inconvenient on-site module debugging. Equipped with native DLR ring redundancy technology and abundant CIP connection resources, the module builds stable industrial Ethernet links between the ControlLogix CPU, HMI panels, remote distributed I/O racks, Kinetix servo drives, and upper SCADA monitoring systems. Widely deployed in automotive assembly lines, packaging equipment, power generation control, petrochemical process systems and heavy machinery automation projects. As a mainstream active communication accessory for the ControlLogix ecosystem, it delivers deterministic real-time data transmission, simplified network architecture and robust long-term operational reliability.