Overview

The Allen-Bradley 1756-DHRIO is a communication interface module designed for the ControlLogix platform, enabling connectivity between modern ControlLogix controllers and legacy Allen-Bradley Data Highway Plus (DH+) and Remote I/O (RIO) networks. The module serves as a communication bridge, facilitating data exchange and system integration across different generations of automation equipment.

The 1756-DHRIO features two independent communication channels that can be configured for DH+, Remote I/O Scanner, Remote I/O Adapter, or a combination of network modes. This flexibility allows users to migrate legacy PLC systems while maintaining compatibility with existing infrastructure.

Widely used in manufacturing, power generation, water treatment, mining, oil & gas, and industrial process control applications, the module provides a cost-effective solution for integrating legacy Allen-Bradley networks into ControlLogix architectures.

Features

Dual Communication Channels

Provides two independently configurable communication ports.

DH+ Network Support

Enables communication with legacy Data Highway Plus devices and controllers.

Remote I/O Compatibility

Supports both Remote I/O Scanner and Adapter operating modes.

ControlLogix Integration

Seamlessly integrates legacy networks into modern ControlLogix systems.

Flexible Migration Solution

Helps reduce upgrade costs while preserving existing automation investments.

Specification	Details
Product Name	Allen-Bradley 1756-DHRIO
Product Type	DH+ / Remote I/O Communication Module
Manufacturer	Rockwell Automation
Brand	Allen-Bradley
Series	ControlLogix
Function	Legacy Network Communication Interface
Supported Networks	Data Highway Plus (DH+) / Remote I/O (RIO)
Communication Channels	2 Independent Channels
Channel Modes	DH+, RIO Scanner, RIO Adapter
Mounting Type	ControlLogix Chassis Installation
Backplane Interface	ControlLogix Backplane
Operating Environment	Industrial Grade
HS Code	8517623990
Dimensions (L × W × H)	Approx. 14 × 15 × 5 cm
Weight	Approx. 0.36 kg
Country of Origin	United States
Condition	Brand New & Original
Availability	In Stock
Shipping	Worldwide Delivery
Warranty	Available Upon Request

Related Keywords

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3. DH+ Communication Module
4. Remote I/O Interface Module
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6. Allen-Bradley Network Bridge
7. Legacy PLC Integration Module
8. Rockwell Automation Communication Card
9. Data Highway Plus Interface
10. 1756-DHRIO Supplier 
11. Allen-Bradley 1756-CNB 
12. Allen-Bradley 1756-CNB/D 
13. Allen-Bradley 1756-CNBR 
14.