Allen‑Bradley 1756-EN2TRK – Conformally Coated Dual-Port EtherNet/IP Bridge Module

Specifications

• Communication Protocol: EtherNet/IP (CIP industrial protocol)
• Ethernet Interfaces: 2 × RJ45 10/100 Mbps auto-sensing copper ports
• Supported Topologies: Linear, star, DLR Device Level Ring for network redundancy
• Max TCP Connections: 128; Total CIP connections: 256
• Backplane Current Draw: 1 A @ 5.1 VDC, 3 mA @ 24 VDC
• Power Dissipation: 5.1 W (21.28 BTU/h)
• Core Differentiator: Full conformal coating on PCB for harsh environments
• Status Indicators: LNK1, LNK2, NET, OK diagnostic LEDs
• Mounting: Single standard slot on all 1756 ControlLogix chassis
• Operating Temperature: 0 °C ~ +60 °C
• Humidity: 5%–95% RH, non-condensing
• Shock/Vibration: 30 g shock, 2 g vibration (10–500 Hz)
• Isolation: 30 V continuous Ethernet-to-backplane basic insulation
• Dimensions: 145 × 35 × 120 mm; Weight: ~0.48 kg
• Certifications: UL/cULus, CE, Class A industrial emissions

Key Features

1. Conformal Coating (CC model exclusive)
    
   Protects circuit boards against moisture, dust, corrosive fumes, condensation, and chemical vapors; ideal for food & beverage, marine, mining, chemical, high-humidity cabinet environments.
2. Dual RJ45 DLR-capable ports
    
   Builds fault-tolerant ring networks with automatic recovery to avoid single-point communication failure.
3. High-speed deterministic CIP data exchange
    
   Supports real-time distributed I/O, multi-axis motion control, HMI, drive and peer-controller messaging.
4. Hot-swappable design
    
   Module replacement without full chassis power shutdown for minimal downtime maintenance.
5. Comprehensive front-panel diagnostics
    
   Quick visual troubleshooting of link status, network activity and module faults.
6. Full Studio 5000 Logix Designer support
    
   Simplified IP configuration, firmware upgrade and network diagnostic tools.
7. Compatible with full ControlLogix ecosystem
    
   Works with 1756 CPU, 1794 FLEX I/O adapters, PowerFlex drives, PanelView HMIs and all EtherNet/IP field devices.

Applications

• Harsh industrial automation environments with humidity, dust or chemical exposure
• Food & beverage, pharmaceutical, water/wastewater, mining, offshore marine equipment
• Mission-critical production lines requiring DLR redundant EtherNet/IP networks
• Central ControlLogix racks connecting large-scale remote distributed I/O and motion systems