1756-EN2TR ControlLogix EtherNet/IP Module 100M DLR | Allen-Bradley

The Original New Allen-Bradley 1756-EN2TR ControlLogix EtherNet/IP Communication Module is a high-performance dual-port EtherNet/IP bridge module designed for demanding industrial automation applications requiring network redundancy and high-speed data exchange. Featuring an embedded switch and support for Device Level Ring (DLR) topology, this module delivers deterministic, real-time performance essential for mission-critical control systems. Fully compatible with ControlLogix, GuardLogix, and CompactLogix controllers, the 1756-EN2TR provides seamless integration for distributed I/O, motion control, and SCADA connectivity.

Core Engineering Highlights:
Dual 10/100 Mbps EtherNet/IP ports with embedded switch | Device Level Ring (DLR) support | 128 TCP/IP connections + 256 CIP connections | 1.0A @ 5V backplane current | 5.1W power dissipation | 1 slot width | 0-60°C operating temperature | Conformal coated version available (1756-EN2TRK)

Key Features:

• Original New Allen-Bradley 1756-EN2TR module

• Dual-port EtherNet/IP bridge with embedded switch for linear and ring topologies

• Device Level Ring (DLR) support with sub-second fault recovery for network redundancy

• Supports up to 128 TCP/IP connections and 256 CIP connections for large-scale I/O and data exchange

• 10/100 Mbps communication rate with auto-negotiation

• Up to 8 axes of integrated motion over EtherNet/IP

• 25,000 I/O packet rate capacity, 2,000 HMI/MSG packet rate

• USB 1.1 port for temporary configuration and diagnostics

• Web server for real-time network diagnostics and configuration management

• Electronic keying for secure module replacement

• CIP Safety™ standards support for simultaneous transfer of safety, control data, and diagnostics

• Fits any slot in the ControlLogix chassis

• Open-style enclosure (IP20 equivalent)

• K suffix denotes conformal coating for harsh environments (1756-EN2TRK)

Applications:

• High-performance EtherNet/IP communication for ControlLogix systems

• Device Level Ring (DLR) network topologies requiring fast fault recovery

• Multi-zone process control in chemical and petrochemical plants

• Coordinated motion control across packaging and material handling systems

• SCADA integration for remote monitoring and diagnostics

• High-speed I/O data exchange between distributed control nodes

• Produced/consumed tag communication and MSG instruction data exchange

• Remote diagnostics and monitoring via built-in web server

• System upgrades from 1756-ENBT to higher-capacity communication

Technical Specifications:

• Catalog Number: 1756-EN2TR

• Product Family: ControlLogix EtherNet/IP Communication Modules

• Product Type: EtherNet/IP Bridge Module with Embedded Switch, Copper

• Communication Rate: 10/100 Mbps auto-negotiation

• Media: Dual copper RJ45

• Ethernet Ports: 2 x RJ45 Category 5

• USB Port: 1 x USB 1.1 (programming/diagnostics)

• TCP/IP Connections: 128

• CIP Connections: 256

• Multicast Tags: 32 max

• I/O Packet Rate: 25,000 p/s

• HMI/MSG Packet Rate: 2,000 p/s

• Integrated Motion: Up to 8 axes on EtherNet/IP network

• Current Draw @ 5.1V: 1.0A

• Current Draw @ 24V: 3mA

• Power Dissipation: 5.1W

• Thermal Dissipation: 17.4 BTU/hr

• Isolation Voltage: 30V continuous, Basic Insulation Type

• Slot Width: 1

• Module Location: Chassis-based, any slot

• Enclosure Type: None (open-style)

• Weight: Approx. 0.45 kg (1.00 lbs)

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: –40°C to 85°C

• Relative Humidity: 5% to 95% non-condensing

• ESD Immunity: 6 kV contact discharges, 8 kV air discharges

• Certifications: CE, cULus, KC, RCM, ODVA (EtherNet/IP), China CCC, UKCA, ABS

System Compatibility:

• Rockwell Automation ControlLogix controllers

• GuardLogix controllers

• ControlLogix-XT extreme environment controllers

• 1756 ControlLogix chassis (any slot)

• Studio 5000 Logix Designer® application (Add-On Profile available)

• RSLogix 5000 programming software

• EtherNet/IP networks with DLR, linear, and star topologies

• 1756 power supplies (standard and XT series)

Related Products:

• 1756-EN2TRK – Conformal coated version for harsh environments

• 1756-EN2T – Single-port version (no DLR support)

• 1756-EN2TP – 2-port version with Parallel Redundancy Protocol (PRP) support

• 1756-EN2TRXT – Extreme temperature version (–25°C to +70°C) for harsh environments

• 1756-EN3TR – 3-port EtherNet/IP bridge module

• 1756-EN4TR – 4-port EtherNet/IP bridge module with 1 Gbps support

• 1585J-M8TBJM-1M9 – Ethernet patch cable (accessory)

• 1756-PA72 / 1756-PB72 – ControlLogix power supplies

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley, ControlLogix, GuardLogix, and Studio 5000 are trademarks of Rockwell Automation.