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Allen-Bradley ControlLogix 1756-EN4TR Dual-Port Gigabit EtherNet/IP Module, 512 TCP Connections, 256 Axes | Original New

Allen-Bradley ControlLogix 1756-EN4TR Dual-Port Gigabit EtherNet/IP Module, 512 TCP Connections, 256 Axes | Original New

ALLEN-BRADLEY | CONTROLLOGIX

1756-EN4TR

Dual-Port Gigabit EtherNet/IP Motion Communication Module

Official description: EtherNet/IP communication module, dual port, 10M/100M/1G twisted pair, 512 TCP connections, 256 axes.

PORTS: Dual | LINK SPEED: 10/100/1G | TCP CONNECTIONS: 512 | MOTION AXES: 256

LEAD TIME: In stock | WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

Overview
Technical Data
Inquiry
Functions
Interfaces
Installation
Diagnostics
FAQ
Recommend Models
Recommended Products

Allen-Bradley ControlLogix 1756-EN4TR

Dual-Port Gigabit EtherNet/IP Motion Communication Module for the ControlLogix platform.

PORTS
Dual

LINK SPEED
10/100/1G

TCP CONNECTIONS
512

MOTION AXES
256

The Rockwell Automation official cut sheet identifies catalog number 1756-EN4TR as EtherNet/IP communication module, dual port, 10M/100M/1G twisted pair, 512 TCP connections, 256 axes. Verify the complete catalog number, series or revision, installed platform and application requirements before procurement.

Technical Data

Complete model	1756-EN4TR
Brand	Allen-Bradley
Product family	1756 ControlLogix I/O Modules and Accessories
Product type	Communication Interface Module
Official description	EtherNet/IP communication module, dual port, 10M/100M/1G twisted pair, 512 TCP connections, 256 axes
Network protocol	EtherNet/IP
Network ports	Dual port
Physical media	Twisted pair
Link speed	10 Mbit/s, 100 Mbit/s or 1 Gbit/s
TCP connections	512
Motion axes	256
Dimensions	No numeric dimensions were stated in the verified official cut sheet
Weight	Not stated in the verified official cut sheet
Installation instructions	Rockwell Automation publication 1756-IN050

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Functions

Dual-port networking
Provides two EtherNet/IP ports for high-capacity ControlLogix communication.

Gigabit capability
Supports 10M, 100M or 1G twisted-pair Ethernet operation.

Connection capacity
The official cut sheet specifies 512 TCP connections.

Motion capacity
The exact model supports up to 256 axes.

Interfaces

Network ports
Two EtherNet/IP ports are provided on the exact model.

Link rates
Network links support 10 Mbit/s, 100 Mbit/s and 1 Gbit/s operation.

Topology planning
Apply the dual ports only in Rockwell Automation-supported network topologies.

System interface
The module communicates with the ControlLogix system through the chassis backplane.

Installation

Official instructions
Follow Rockwell Automation publication 1756-IN050.

Chassis placement
Install in a compatible ControlLogix chassis slot with power removed.

Network planning
Verify cabling, link rates, addressing and supported topology for both ports.

Motion commissioning
Confirm controller and firmware compatibility, TCP loading and the 256-axis application limit.

Diagnostics

Exact model
Verify 1756-EN4TR on the nameplate and in the controller project.

Port operation
Check both links and confirm the intended 10M, 100M or 1G negotiation.

Connection loading
Confirm the application remains within 512 TCP connections.

Motion loading
Verify the configured system remains within 256 axes and supported controller limits.

FAQ

Q1. How can I verify that the quoted unit is exactly 1756-EN4TR?

Require a clear nameplate photo showing 1756-EN4TR and compare it with the Rockwell Automation official cut sheet description: EtherNet/IP communication module, dual port, 10M/100M/1G twisted pair, 512 TCP connections, 256 axes. The quotation, invoice and packing label should use the same complete catalog number.

Q2. How can I distinguish a new 1756-EN4TR from a used or refurbished unit?

Ask for current, high-resolution photos of the front, side label, chassis connector and field or network interfaces. Check for insertion marks, terminal or port wear, damaged seals, residue, repainting or mismatched packaging, and require the condition in writing.

Q3. How should I check whether a supplier is legitimate and reliable for 1756-EN4TR?

Verify the legal company name, registration, physical address, corporate-domain contacts and bank beneficiary. Request traceable references and a written quotation that identifies 1756-EN4TR, declared condition, quantity and return terms.

Q4. Which specifications should an engineer confirm before purchasing 1756-EN4TR?

Confirm dual 10/100/1G EtherNet/IP ports, 512 TCP connections, 256-axis capacity, chassis slot, firmware and topology. Match these items with the installed ControlLogix system and current Rockwell Automation documentation.

Q5. What physical evidence should be requested before payment for 1756-EN4TR?

Request timestamped photos or video showing the exact 1756-EN4TR nameplate, series and revision, serial or date identifiers, packaging, chassis connector and all field or network interfaces. Evidence should match the offered unit.

Q6. Can a similar catalog number or suffix replace 1756-EN4TR?

Do not assume interchangeability. A different 1756 catalog number can change point count, contact type, port count, link speed, connection capacity, motion capacity or compatibility. Approve a substitute only after engineering review.

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