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Allen-Bradley 1756-EN2TR ControlLogix Ethernet – Repair Available

Allen-Bradley 1756-EN2TR ControlLogix EtherNet/IP bridge module, Second-generation EtherNet/IP bridge, copper, dual-port embedded switch (DLR ring capable). NJT Automation offers mail-in repair for the 1756-EN2TR with a 1-year warranty; replacement pricing is available on request.

Mail-in repair available now. Returned with a 1-year warranty. Replacement pricing on request.

Allen-Bradley 1756-EN2TR ControlLogix EtherNet/IP bridge module – front view
Request Replacement QuoteRequest Repair QuoteEstimated $1,440.00
Part Number1756-EN2TR
Price
On Request
Previously sold for $729.99 - $2,299.99 USDAvailability and condition determine final quote.
DescriptionControlLogix EtherNet/IP bridge module.
Shipping
UPS Ground included | Next-Day Air and Worldwide Shipping available at checkout
Warranty
1-year full-function warranty provided by NJT Automation.
Warranty details
Included
1 year, full-function
2 years
+15% of product price ($202.50)
3 years
+25% of product price ($337.50)
View full warranty policy
Returns
90-day free returns. View return policy
Exchange

Send us your defective 1756-EN2TR after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability
Available Level 1

This part is available through our Level 1 supplier network. Request a quote to confirm quantity, price, and next-day shipping options.

Inventory Level 1 RFQ

Level 1 parts come from vetted US suppliers we have worked with for years. Each unit is checked before it ships, so counterfeits, repackaged items sold as new, and worn-out equipment do not reach you. Every part carries the same NJT warranty and return policy as our own stock.

Request QuoteLearn more about Inventory Levels
Repairs

1756-EN2TR Mail-In Repair Service

Estimated: $1,440.00

How the Process Works:

  1. Submit Your RFQ: Complete the request-for-quote (RFQ) form with your exact requirements.
  2. Receive a Quote: We respond ASAP - within 1 hour during business hours.
  3. Approve and Pay: Agree to the quoted price, and we will issue an invoice payable via credit card or your preferred method.
  4. Direct Shipping: Our normal shipping time is 3-5 business days, during which we thoroughly inspect and certify items to meet our high standards. If you request next-day air delivery, the item will be sent directly to you and arrive the following business day. Please note: These items are NOT available for local pickup at NJT Automation's location.

What We Offer

We source genuine parts from trusted U.S. channels and stand behind what we sell.
  • Our network has millions of parts ready to be delivered now.
  • Complete Transparency: Clear information on item availability.
  • Well-vetted components from trusted suppliers sourced from the USA.
  • Technical Support: Assistance, troubleshooting and hardware repairs.
  • Minimal Markup: The best sourcing service at a minimal cost.
  • Quick Delivery: Fast access to the parts you need to get your machines back up and running.
  • Dropship available • No branding on packaging

Part Number Decoder

ControlLogix EtherNet/IP bridge module
1756EN2TR

Second-generation EtherNet/IP bridge, copper, dual-port embedded switch (DLR ring capable).

1756
BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
EN
Module typeEtherNet/IP communication bridge: connects the chassis backplane to an EtherNet/IP network.
2
GenerationSecond-generation EtherNet/IP bridge (10/100 Mbps; 128 TCP / 256 CIP connections, up to 8 Integrated Motion axes).
T
MediaTwisted-pair copper (RJ45).
R
TopologyRing: embedded 2-port switch supporting Device Level Ring (DLR), linear or star topologies.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Physical Data

Weight and DimensionsWeight0.62 lb (0.28 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)
Weight0.28 kg (0.62 lb)
Typical unit weight
Dimensions (H × W × D)145 × 35 × 145 mm (5.7 × 1.4 × 5.7 in.)
Single-slot module
Shipping Weight0.81 kg (1.78 lb)
Estimated: unit weight plus box and packing material; bills as 2 lb
Shipping Box (L × W × H)12 × 12 × 8 in. (305 × 305 × 203 mm)
Smallest standard box fitting the product with 3 in. cushioning per side
Product weight and dimensions are typical manufacturer-published values and may differ by series or option. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Datasheet

Datasheet available for download
Generated from product specifications; not an official Allen-Bradley datasheet. For an official datasheet, contact Allen-Bradley or an authorized distributor.

Similar Part Numbers

  • 1756-EN3TR Generation: Third-generation EtherNet/IP bridge

Allen Bradley Information

Technical Description
Second-generation EtherNet/IP bridge, copper, dual-port embedded switch (DLR ring capable).
Technical Specifications11 parameters from manufacturer-published specifications
Module typeEtherNet/IP communication bridge, dual-port
Network speed10/100 Mbps, full or half duplex
Ethernet ports2 × RJ45 with embedded switch
Supported topologiesDevice Level Ring (DLR), linear, star
Connections128 TCP/IP; 256 CIP
I/O packet rate25,000 packets/s
MotionUp to 8 axes, Integrated Motion on EtherNet/IP
Configuration portUSB
Backplane current1 A @ 5.1V DC
Power dissipation5.1 W
Chassis slots1
Typical manufacturer-published values for this catalog number; confirm against the current manufacturer documentation before specifying.

Alternate Part Numbers

1756EN2TR
CategoryControlLogix
Part Number1756-EN2TR
ManufacturerAllen-Bradley

Previously sold 1756-EN2TR

4 sold

NJT Automation has supplied and shipped 4 1756-EN2TR ControlLogix EtherNet/IP bridge modules since 2024; request a quote and we will source another from our supplier network.

Sold
4 since 2024
Price range
$730 – $2,300, median $1,350
By condition
Unused surplus (4)$730 – $2,300
Series
C × 4

Unused surplus 1756-EN2TR ControlLogix EtherNet/IP bridge modules have sold for $730 – $2,300, typically around $1,350.

Allen-Bradley 1756-EN2TR Unused surplus (new old stock) - previously sold by NJT AutomationSold

2024 Allen Bradley 1756-EN2TR Ser C ControlLogix Ethernet Module -Sealed Surplus

$2,299.99 USD

Unused surplus (new old stock)

Request Quote
Allen-Bradley 1756-EN2TR Unused surplus (new old stock) - previously sold by NJT AutomationSold

Allen Bradley 1756-EN2TR / 1756EN2TR Ser C ControlLogix EtherNet/IP Module 100M

$1,599.99 USD

Unused surplus (new old stock)

Request Quote
Allen-Bradley 1756-EN2TR Unused surplus (new old stock) - previously sold by NJT AutomationSold

2023 Allen Bradley 1756-EN2TR Ser C CLX ENet/IP 100M DLR Module Sealed Surplus

$1,099.99 USD

Unused surplus (new old stock)

Request Quote
Allen-Bradley / Rockwell Automation 1756-EN2TR Unused surplus (new old stock) - previously sold by NJT AutomationSold

Allen Bradley 1756-EN2TR Ser C ControlLogix 2-Port Ethernet Module - No Box

$729.99 USD

Unused surplus (new old stock)

Request Quote

Can the 1756-EN2TR be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-EN2TR, including diagnostic evaluation, component-level repair, and functional testing.

NJT Managed Repair

One vendor. One warranty. NJT manages the entire process.

  • 1-year full-function NJT warranty, with 2- and 3-year options available
  • Rush service available for production-critical repairs
  • No evaluation or diagnostic charges
  • No repair, no charge
  • "Unrepairable" is not an option
  • Pre-paid UPS shipping label provided for sending your unit in
  • $650 minimum repair charge, shipping included both ways
Get an NJT Repair Quote

Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.

Find a PLC repair specialiston RepairMode.com ↗

Common 1756-EN2TR failures

Failure patterns we regularly see on ControlLogix EtherNet/IP bridge module hardware like the 1756-EN2TR:

  • Scrolling display / IP address display blank while the module still passes traffic
  • Module drops all CIP connections under load and recovers only after a power cycle
  • Ethernet port failure: no link LED, or link flapping with a known-good cable and switch port
  • Solid red OK LED at power-up (module hardware fault) or module not seen in RSLinx
  • Overheating when the module runs near its connection limit in a sealed enclosure

Repair or replace?

ReplaceA ControlLogix EtherNet/IP bridge module holds little more than a network address, so a replacement 1756-EN2TR drops in with almost no setup. Replace it when the network is down or the module is physically damaged. The 1756-EN2TR is not shelf stock, so sourcing time is part of the repair-or-replace decision.
RepairRepair makes sense on the 1756-EN2TR when the failure is a connector, port or power-section fault on an otherwise sound board, or when you have several failing modules and want them returned as tested spares. Most 1756-EN2TR units reach our bench with one of two symptoms: “Ethernet port failure” or “Overheating”. Already swapped it out? Repairing the failed 1756-EN2TR turns it into a tested spare on the shelf for the next failure. Expect estimated $1,440.00 for the 1756-EN2TR repair, with full-function testing and a 1-year warranty included.

Request a Repair Quote

Text photos of the faulty unit and the symptoms to (414) 331-5954.

Start Your Repair Today

All product photos were taken by NJT Automation. Test videos originated from either NJT Automation internally or from repair technicians within our network.

Still have questions?

Find answers to shipping, warranties, repairs, and more.

The Allen-Bradley 1756-EN2TR is a ControlLogix EtherNet/IP bridge module: Second-generation EtherNet/IP bridge, copper, dual-port embedded switch (DLR ring capable).
The 1756-EN2TR is available in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.
At NJT Automation, 4 1756-EN2TR ControlLogix EtherNet/IP bridge modules have sold since 2024 for $730 – $2,300, with a median of $1,350. None are in stock at the moment; request a quote for current pricing, or have your ControlLogix EtherNet/IP bridge module repaired for an estimated $1,440.
This 1756-EN2TR is sourced on request, so sourcing and quote timelines apply. Request a quote and we'll confirm availability and lead time. Many parts can be sourced within a few business days through our Level 1 supplier network.
Yes. UPS Next Day Air is available at checkout for the 1756-EN2TR ControlLogix EtherNet/IP bridge module. Place your order before 5:00 PM Central on a business day and your in-stock item ships the same day for next-business-day delivery.
Yes. Once your 1756-EN2TR has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.
NJT Automation

NJTAutomation

Industrial Electronics

Supply & Repair, Milwaukee WI

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Product Condition & Warranty

Products sold by NJT Automation may be surplus inventory, discontinued models, older series, or units with earlier manufacturing date codes than those currently available from the OEM or its authorized distribution network. As NJT Automation is not an authorized distributor, manufacturer warranties, support programs, and other OEM services may not apply. Any warranty provided is solely that of NJT Automation, where applicable.

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Certain programmable logic controllers (PLCs), drives, HMIs, and other electronic products may require firmware to operate. While some products may include firmware, NJT Automation makes no representations or warranties regarding whether firmware is installed, the firmware version or revision level, its compatibility with your application, or its licensing status.

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