1756-EN3TR | Allen-Bradley ControlLogix EtherNet bridge Module 2-10/100 Mbps, CIP
1756-EN3TR | Allen-Bradley ControlLogix EtherNet bridge Module 2-10/100 Mbps, CIP
1756-EN3TR | Allen-Bradley ControlLogix EtherNet bridge Module 2-10/100 Mbps, CIP
    1756-EN3TR | Allen-Bradley ControlLogix EtherNet bridge Module 2-10/100 Mbps, CIP
1756-EN3TR | Allen-Bradley ControlLogix EtherNet bridge Module 2-10/100 Mbps, CIP

1756-EN3TR | Allen-Bradley ControlLogix EtherNet bridge Module 2-10/100 Mbps, CIP

Part #: 1756-EN3TR Manufactured by: Allen-Bradley
Regular price
$699.00
Sale price
$699.00
Regular price
6 in Stock
Condition: New-Surplus Original Box
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Product Overview
The Allen-Bradley 1756-EN3TR is a dual-port EtherNet/IP bridge module for ControlLogix systems. With embedded switch techn...  Read more
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Product Description P/N: 1756-EN3TR

Description / Specifications

Description 

The Allen-Bradley 1756-EN3TR is a ControlLogix communication module that functions as an EtherNet/IP bridge. It features two RJ45 Ethernet ports supporting 10/100 Mbps transfer rates and one USB 2.0 port at 12 Mbps for configuration and diagnostics.

 

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-EN3TR
Manufacturer Rockwell Automation
Integrated motion axes Up to 128 Axes
Thermal Dissipation 17.4 BTU/hr
Integrated Motion Supported
Power supply, redundant 1756-PA75R, 1756-PB75R, 1756-PSCA2
Power supply, standard 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75, 1756- PC75, 1756-PH75
Chassis 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Slot width 1
Backplane current 1.0 A at 5.1 VDC; 3 mA at 24VDC
Mounting Any 1756 Chassis
USB Data Transfer rate 12 Mbps
Supported topologies Linear / Device Level Ring (DLR)
Ethernet Data Transfer speed 10 /100 Mbps
Communication Port Two (2) Ethernet; One (1) USB
Power Dissipation 5.1 W
Module Type Ethernet Communication Module
Location Chassis (any slot)
Backplane Current (5Volts) 1 amp
Backplane Current (24 Volts) 3 milliamps
Power Consumption 5.1 Watts
Insulation Voltage 30 Volts Continuous
Enclosure Open
Operating Temperature 32-140 Fahrenheit, 0-60 Celsius
Current Rating 1.2 Amps

  

 

Information About 1756-EN3TR

The 1756-EN3TR belongs to the Allen-Bradley ControlLogix communication family and provides high-performance EtherNet/IP networking for local or remote chassis installations. With embedded switch technology, the dual Ethernet ports support linear, star, and Device Level Ring (DLR) topologies, ensuring network flexibility and resilience. This module supports up to 128 CIP motion axes, 128 TCP/IP connections, and 256 Logix connections, making it suitable for large-scale control systems. It draws 1 A at 5.1V DC and 3 mA at 24V DC from the backplane, with a power dissipation of approximately 5.1 W. Designed for reliability, it operates within a temperature range of 32–140 °F (0–60 °C) and provides continuous 30V insulation voltage protection. Compact and versatile, the 1756-EN3TR allows seamless integration of EtherNet/IP networks with advanced motion, I/O, and information exchange.

Key Features:

  • Ethernet Connectivity: Two RJ45 ports supporting 10/100 Mbps with embedded switch technology for flexible topologies.
  • USB Interface: One USB 2.0 port (12 Mbps) for configuration, programming, and diagnostics.
  • Supported Topologies: Linear, star, and Device Level Ring (DLR) for network redundancy and uptime.
  • Motion Support: Handles up to 128 CIP motion axes and up to 255 total axes for advanced motion applications.
  • Connection Capacity: Supports 128 TCP/IP and 256 Logix connections for large-scale system integration.
  • Power Requirements: Consumes 1 A @ 5.1V DC and 3 mA @ 24V DC with 5.1 W maximum power dissipation.
  • Environmental Ratings: Operates from 0–60 °C (32–140 °F) with 30V continuous insulation voltage.
  • Application Use: Suitable for real-time I/O messaging, controller communication, and enterprise-level integration.

The 1756-EN3TR delivers robust EtherNet/IP connectivity, high connection capacity, and reliable motion support for modern ControlLogix automation systems.

 

 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1756-EN3TR
Question: What is the 1756-EN3TR?
Date Update:03/06/2025
Answer:

The 1756-EN3TR is a ControlLogix EtherNet/IP communication module from Rockwell Automation. It enables the ControlLogix controller to communicate with other devices over an EtherNet/IP network. It supports real-time I/O messaging and message exchange.

Question: What are the main features of the 1756-EN3TR?
Date Update:03/06/2025
Answer:
  • Dual Ethernet ports with embedded switch technology for device-level ring (DLR) support.
  • Supports Linear, DLR, and star topologies.
  • Data rates: 10 Mbps, 100 Mbps, and 1 Gbps.
  • Supports simultaneous connections to multiple devices.
  • Diagnostic indicators for status and activity.
  • Firmware upgradable for security and performance enhancements.
Question: How do I configure the 1756-EN3TR?
Date Update:03/06/2025
Answer:

You can configure the module using Studio 5000 Logix Designer or RSLogix 5000 software.

Steps:

  • Add the module to the I/O configuration tree.
  • Assign an IP address (static or via DHCP/BOOTP).
  • Set the desired parameters (e.g., module properties, requested packet intervals).
  • Download the configuration to the controller.
Question: What is the maximum number of connections supported?
Date Update:03/06/2025
Answer:

The 1756-EN3TR can handle up to 128 CIP connections for real-time I/O and messaging.

Question: How do I update the module’s firmware?
Date Update:03/06/2025
Answer:
  • Use the ControlFLASH or ControlFLASH Plus utility.
  • Select the module, and choose the new firmware revision.
  • Follow the on-screen instructions to complete the update.

Important: Updating firmware may cause brief downtime.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1756-EN3TR is a ControlLogix communication module that functions as an EtherNet/IP bridge. It features two RJ45 Ethernet ports supporting 10/100 Mbps transfer rates and one USB 2.0 port at 12 Mbps for configuration and diagnostics.

 

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-EN3TR
Manufacturer Rockwell Automation
Integrated motion axes Up to 128 Axes
Thermal Dissipation 17.4 BTU/hr
Integrated Motion Supported
Power supply, redundant 1756-PA75R, 1756-PB75R, 1756-PSCA2
Power supply, standard 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75, 1756- PC75, 1756-PH75
Chassis 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Slot width 1
Backplane current 1.0 A at 5.1 VDC; 3 mA at 24VDC
Mounting Any 1756 Chassis
USB Data Transfer rate 12 Mbps
Supported topologies Linear / Device Level Ring (DLR)
Ethernet Data Transfer speed 10 /100 Mbps
Communication Port Two (2) Ethernet; One (1) USB
Power Dissipation 5.1 W
Module Type Ethernet Communication Module
Location Chassis (any slot)
Backplane Current (5Volts) 1 amp
Backplane Current (24 Volts) 3 milliamps
Power Consumption 5.1 Watts
Insulation Voltage 30 Volts Continuous
Enclosure Open
Operating Temperature 32-140 Fahrenheit, 0-60 Celsius
Current Rating 1.2 Amps

  

 

Information About 1756-EN3TR

The 1756-EN3TR belongs to the Allen-Bradley ControlLogix communication family and provides high-performance EtherNet/IP networking for local or remote chassis installations. With embedded switch technology, the dual Ethernet ports support linear, star, and Device Level Ring (DLR) topologies, ensuring network flexibility and resilience. This module supports up to 128 CIP motion axes, 128 TCP/IP connections, and 256 Logix connections, making it suitable for large-scale control systems. It draws 1 A at 5.1V DC and 3 mA at 24V DC from the backplane, with a power dissipation of approximately 5.1 W. Designed for reliability, it operates within a temperature range of 32–140 °F (0–60 °C) and provides continuous 30V insulation voltage protection. Compact and versatile, the 1756-EN3TR allows seamless integration of EtherNet/IP networks with advanced motion, I/O, and information exchange.

Key Features:

  • Ethernet Connectivity: Two RJ45 ports supporting 10/100 Mbps with embedded switch technology for flexible topologies.
  • USB Interface: One USB 2.0 port (12 Mbps) for configuration, programming, and diagnostics.
  • Supported Topologies: Linear, star, and Device Level Ring (DLR) for network redundancy and uptime.
  • Motion Support: Handles up to 128 CIP motion axes and up to 255 total axes for advanced motion applications.
  • Connection Capacity: Supports 128 TCP/IP and 256 Logix connections for large-scale system integration.
  • Power Requirements: Consumes 1 A @ 5.1V DC and 3 mA @ 24V DC with 5.1 W maximum power dissipation.
  • Environmental Ratings: Operates from 0–60 °C (32–140 °F) with 30V continuous insulation voltage.
  • Application Use: Suitable for real-time I/O messaging, controller communication, and enterprise-level integration.

The 1756-EN3TR delivers robust EtherNet/IP connectivity, high connection capacity, and reliable motion support for modern ControlLogix automation systems.

 

 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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