1784-U2CN Allen-Bradley ControlLogix DH+ Link Communication Module, PLC Interface Adapter

Allen-Bradley 1784-U2CN

1784-U2CN ControlNet Module

1784-U2CN SLC 500 Module

1784-U2CN

The Allen-Bradley 1784-U2CN ControlNet Module is a SLC 500 communication interface enabling ControlNet network connectivity for industrial automation data exchange.

Specification

SEODescription

The Allen-Bradley 1784-U2CN ControlNet Module is a communication interface designed for integration with the SLC 500 modular control system. This 1784-U2CN SLC 500 Module supports ControlNet networks, providing high-speed deterministic data exchange with up to 99 nodes on a single network. It operates on a 24V DC power supply and functions within an industrial temperature range of 0°C to 60°C. The module connects directly to SLC 500 processors via the backplane, enabling seamless integration with digital and analog I/O modules. Key industries include manufacturing, automotive, and process automation, where real-time control and reliability are critical. Its advantages include robust communication performance and compatibility with legacy systems, while limitations involve limited support for modern protocols like EtherNet/IP. The 1784-U2CN remains a durable solution for industrial networks requiring deterministic data transfer.

SEOSpecification

Parameter	Specification
Module Type	Allen-Bradley 1784-U2CN ControlNet Communication Module
Compatibility	SLC 5/03 & SLC 5/04 Processors (1784-U2CN SLC 500 Module)
Protocol	ControlNet (CNet)
Data Transfer Rate	5 Mbps (synchronized)
Power Requirement	5V DC @ 500mA (via backplane)
Operating Temperature	0°C to 60°C (32°F to 140°F)
Certifications	CE, UL, cUL, ATEX, IECEx
Connector Type	Dual ControlNet ports (BNC), Removable Terminal Block
Mounting	SLC 500 chassis slot (single-slot module)
Dimensions	135 x 30 x 107 mm (H x W x D)

SEOQandA

question:Do you provide technical selection services?
answer:Yes, we offer technical selection support to help identify the best solutions for your needs.
question:Can you supply upgraded or alternative models?
answer:Yes, we provide upgraded models or alternatives based on availability and your requirements.
question:Is technical specification customization available?
answer:Yes, we assist in customizing specifications to align with your project needs.

SEOQandA_Product

question:Why does the 1784-U2CN module fail to connect to the DeviceNet network?
answer:Check DeviceNet cable integrity, node address configuration, and ensure proper termination resistor installation.
question:How to resolve unrecognized 1784-U2CN in RSLinx?
answer:Verify backplane connections, update firmware, and confirm correct chassis slot configuration in RSLogix.
question:Why does the 1784-U2CN show intermittent communication errors?
answer:Inspect for electrical noise, validate network baud rate consistency, and ensure shielded grounding.
question:How to fix 1784-U2CN firmware compatibility issues?
answer:Download the latest firmware from Rockwell Automation and flash using ControlFlash utility.
question:Why does the 1784-U2CN module overheat during operation?
answer:Ensure adequate chassis ventilation, verify power supply voltage, and avoid exceeding ambient temperature limits.