Allen-Bradley 1756-EN2TRS ControlLogix Ethernet Module
Allen-Bradley 1756-EN2TRS ControlLogix Ethernet Module. NJT Automation sources the 1756-EN2TRS on request; send the part number for a replacement or repair quote.
Quote required. Request a quote below for pricing and delivery.

Actual NJT inventory photos
| Part Number | 1756-EN2TRS |
| Price | On Request Availability and condition determine final quote. |
| Description | Allen-Bradley 1756-EN2TRS ControlLogix Ethernet Module (ControlLogix Module). Key features: Dual-port Ethernet/IP, supports DLR (Device Level Ring) and linear topologies, enhanced performance and security. |
| 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
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| Returns | 90-day free returns. View return policy |
| Exchange | Send us your defective 1756-EN2TRS after your purchase for a 10% core credit. We also purchase old or damaged parts outright. |
| Availability | Sourced on request We do not have a 1756-EN2TRS on the shelf right now. We can source one through our supplier network; request a quote and we confirm availability, price and lead time before you commit. | ||||||||
| Sourcing | Sourced through our Level 1 network of vetted US suppliers. Each unit is checked before it ships and carries the same NJT warranty and return policy as our own stock. Quotes within one hour during business hours; typical delivery 3–5 business days, next-day air available. Sourced parts are not available for local pickup. | ||||||||
| Repairs | 1756-EN2TRS Mail-In Repair Service | ||||||||
Intended Use | Built for EtherNet/IP networking and remote I/O applications. The bridge connects a ControlLogix chassis to distributed I/O, drives, HMIs and other controllers over Ethernet, and uplinks the rack to plant and business networks. Dual-port versions build device-level ring (DLR) topologies for fault-tolerant machine networks. | ||||||||
Physical Data | Weight and DimensionsWeight0.62 lb (0.28 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)
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. | ||||||||
Allen Bradley Information | Allen Bradley ControlLogix Communication Module 1756-EN2TRS Key Features/Specifications: Dual-port Ethernet/IP, supports DLR (Device Level Ring) and linear topologies, enhanced performance and security. Technical SpecificationsLifecycle status
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| Category | ControlLogix | ||||||||
| Part Number | 1756-EN2TRS | ||||||||
| Manufacturer | Allen-Bradley | ||||||||
Can the 1756-EN2TRS be repaired?
Yes. NJT Automation repairs the 1756-EN2TRS by mail-in: diagnostic evaluation, component-level repair and a functional test, backed by a 1-year full-function warranty.
NJT managed repair. No evaluation fee; no repair, no charge. Prepaid UPS label both ways, $650 minimum, rush available. 1-year full-function warranty included, 2- and 3-year options.
Compare quotes from independent repair technicians. Post your repair on RepairMode to receive competitive bids from experienced technicians. Each technician sets their own pricing and warranty.
Find a PLC repair specialiston RepairMode.com ↗Common failures
Failure patterns we regularly see on ControlLogix EtherNet/IP module hardware like the 1756-EN2TRS:
- Scrolling display / IP address display blank while the module still passes traffic
- Corrupted firmware after an interrupted ControlFLASH update: module stuck in boot
- Overheating when the module runs near its connection limit in a sealed enclosure
- Solid red OK LED at power-up (module hardware fault) or module not seen in RSLinx
- Ethernet port failure: no link LED, or link flapping with a known-good cable and switch port
Photos by NJT Automation; test videos from NJT or network repair technicians.
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