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1756-EN2T

1756-EN2T Allen-Bradley 10/100 Mbps Ethernet Communication

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  • Manufacturer: Allen-Bradley

  • Product No.: 1756-EN2T

  • Product Type: Communication Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 350g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Beskrivelse

Allen-Bradley 1756-EN2T ControlLogix EtherNet/IP Bridge Module

The module functions as a high-performance communication interface engineered to connect Allen-Bradley ControlLogix controllers to open, industrial EtherNet/IP networks. Occupying a single chassis slot width and weighing approximately 0.35 kg, this versatile bridge adapter acts as a critical link for Industrial Internet of Things (IIoT) architectures, encapsulating standard CIP messages within TCP/IP frameworks to manage up to 128 TCP/IP and 256 Logix connections simultaneously across distributed I/O, HMI, and SCADA systems.

Technical Specifications

Manufacturer Allen-Bradley / Rockwell Automation
Product Model / Catalog No. 1756-EN2T
System Line Series ControlLogix Communication System
Component Interface Profile EtherNet/IP Bridge Communication Module
Network Transmission Rates 10 / 100 Mbps Fast Ethernet (Auto-Sensing)
Capacity Metrics 128 TCP/IP connections | 256 Logix connections | Max 8 axes integrated motion
Packet Execution Limits I/O Processing: 10,000 p/s | HMI/MSG Processing: 3,200 p/s
Integrated Physical Interfaces One (1) RJ45 Fast Ethernet Port | One (1) USB 1.1 Configuration Port
Backplane Power Usage 1 A @ 5.1V DC nominal draw (1.2 A maximum continuous boundary)
Power & Thermal Dissipation 5.1 to 6.2 Watts power dissipation | 17.4 to 21.28 BTU/hour heat generation
Chassis Space Occupancy 1-Slot width form factor (Can be placed in any available slot)
Insulation Safety Voltage 30 Volts continuous protection barrier threshold
Hardware Net Weight 0.35 kg / 0.77 lbs robust standalone card weight
System Compatibility Matrix Chassis: 1756-A4, -A7, -A10, -A13, -A17 | Power Supplies: 1756-PA72, -PA75, -PB72, -PB75, -PC75, -PH75

Quick Installation Guide

  • Verify that the main chassis rack power supply is completely isolated before inserting or extracting interface hardware.
  • Align the upper and lower circuit board tracks of the 0.35 kg 1756-EN2T bridge card with any open slot inside the targeted ControlLogix chassis.
  • Press the 0.35 kg module firmly into the rack until the structural interlocking top and bottom clips engage with the metal chassis frame.
  • Connect a standard Category 5 unshielded twisted-pair (UTP) copper line with an RJ45 connector into the front interface port, configure your local subnet boundaries, and close the terminal shroud.

Technical FAQs

Q1: Why does the 1756-EN2T module require separate tracking for TCP/IP and Logix connection counts?
A1: TCP/IP connections identify the physical network nodes (such as individual computers, HMIs, or third-party hardware controllers) interacting with the bridge. Logix connections represent the internal data paths used by controllers to stream real-time I/O tags, produce/consume data arrays, or communicate messaging parameters concurrently.

Q2: How does a modest 0.35 kg standalone mass cope with heavy communication traffic and thermal loading?
A2: A net mass of 0.35 kg highlights a solid-state layout using optimized communication processing chipsets. While running a full 10,000 p/s I/O packet execution rate, the card dissipates up to 6.2 Watts (21.28 BTU/hour), relying on standard chassis convection pathways within its 0 to 60°C operating window.

Q3: Can this module participate in high-availability, fault-tolerant network topologies?
A3: Yes. The 1756-EN2T bridge includes native firmware support for Device Level Ring (DLR) layouts and Parallel Redundancy Protocol (PRP) structures. This allows the module to withstand an external network cable break without dropping active PLC connections or disrupting industrial process control loops.

🏷️ Tags: Communication Module

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