1756-EN4TR | Allen-Bradley ControlLogix EtherNet/IP Communication Module

2026-04-17T01:20:49-07:00

Type: Communication Module
Price: 66.00

Product Overview

The Allen-Bradley 1756-EN4TR represents the pinnacle of communication hardware for the ControlLogix 5580 platform. This high-capacity EtherNet/IP module facilitates high-speed data exchange, bridging the gap between controller-level logic and enterprise-level analytics. It supports Gigabit Ethernet speeds and manages massive connection counts for complex, data-intensive industrial applications. We offer this module as 100% Brand New and Original, ensuring your network infrastructure utilizes the latest hardware revisions for maximum security and throughput.

Technical Specifications

The 1756-EN4TR delivers significantly expanded bandwidth and connection density compared to legacy EN2T modules.

Manufacturer: Allen-Bradley / Rockwell Automation

Product Line: ControlLogix

Module Type: High-Capacity EtherNet/IP Communication Module

Media Support: Dual Copper Media (RJ45)

Communication Rates: 10 Mbps, 100 Mbps, and 1 Gbps (Gigabit)

Maximum TCP Connections: 512 Connections

Maximum CIP I/O Connections: 1,000 Connections

HMI/Messaging Connections: 528 Connections

Unconnected Message Capacity: 256 Backplane / 256 Ethernet

Network Topologies: Device Level Ring (DLR), Linear, and Star

Socket Services: Fully Supported

Weight: 0.69 lbs (0.31 kg)

Engineering Advantages

Gigabit Backbone Performance: The 1756-EN4TR introduces 1 Gbps communication rates to the 1756 chassis. This tenfold increase in bandwidth over standard modules eliminates network bottlenecks in applications involving high-definition vision systems or large-scale distributed I/O.

Massive Connection Density: With the ability to manage 1,000 CIP I/O connections and 512 TCP connections, a single 1756-EN4TR replaces multiple legacy adapters. This consolidation reduces chassis slot consumption and simplifies the network architecture.

Redundant Network Resiliency: The integrated embedded switch supports Device Level Ring (DLR) topologies. This feature allows the network to recover from a single cable break in milliseconds, maintaining deterministic control and preventing costly process interruptions.

Enhanced Socket Services: The module natively supports socket services, enabling direct communication with third-party devices like printers, barcode scanners, and non-Logix controllers using standard TCP or UDP protocols.

Future-Proof Integration: Optimized for the ControlLogix 5580 series, this module leverages the high-speed backplane to ensure data moves at the maximum speed the processor allows, facilitating advanced IIoT and Industry 4.0 data harvesting.

FAQs

How does the 1756-EN4TR improve upon the 1756-EN2TR?

The 1756-EN4TR provides Gigabit (1 Gbps) speeds and supports roughly four times the TCP connection capacity of the EN2TR. It specifically addresses the needs of modern, data-heavy "Smart Factories" where legacy 100 Mbps modules struggle with traffic congestion.

Can I use the 1756-EN4TR in older ControlLogix chassis?

Yes. While it performs best in Series C chassis with 5580 controllers, you can install the 1756-EN4TR in standard 1756 I/O chassis to upgrade existing network segments. Always verify that your firmware version in Studio 5000 supports the EN4TR profile.

Does this module support "Removal and Insertion Under Power" (RIUP)?

Yes. Like most ControlLogix modules, you can install or remove the 1756-EN4TR while the chassis is powered. However, removing the communication module will immediately break the network path for all devices routed through its ports, so verify process safety before removal.

Is this a genuine, factory-sealed unit?

We guarantee that every 1756-EN4TR we ship is 100% Brand New and Original. It arrives in the original Allen-Bradley factory box with the UPC (889508721071) intact, ensuring you receive the full benefit of current manufacturing standards and hardware security.