Allen-Bradley 1756-DHRIO

Overview

The Allen-Bradley 1756-DHRIO is a vital ControlLogix communication module designed to seamlessly integrate Data Highway Plus (DH+) and Remote I/O (RIO) networks within your industrial automation infrastructure. As systems evolve, the 1756-DHRIO serves as a critical bridge, facilitating communication between your established DH+ networks and other modules residing in a ControlLogix backplane. Furthermore, it functions as a robust RIO scanner, empowering your ControlLogix controller to efficiently exchange data with various remote RIO devices. While new 1756-DHRIO modules are no longer in production due to the age of DH+ technology, DD Parts Solution understands the ongoing need to support legacy systems. We often have access to meticulously inspected used or refurbished modules to ensure the continued operation of your existing architecture. It is important to acknowledge the inherent limitations of DH+ and consider strategic migration paths to contemporary technologies like Ethernet/IP for new deployments or significant system enhancements. This module is an essential component for maintaining functionality in critical legacy operations.

Key Features

• Legacy Network Integration: Provides essential connectivity to Data Highway Plus (DH+) networks, safeguarding existing system investments.
• Remote I/O Scanning: Enables efficient data exchange and control with a wide array of Remote I/O devices.
• Dual Channel Connectivity: Equipped with two independent channels for versatile DH+ network connections.
• ControlLogix Native: Designed for seamless and reliable integration within the Allen-Bradley ControlLogix chassis.
• System Bridge Functionality: Acts as a crucial communication bridge between DH+ networks and the ControlLogix backplane.
• Sustained Operational Support: Ideal for maintaining critical processes in systems reliant on DH+ and RIO technologies.
• Reliable Performance: Continues to deliver consistent communication performance for legacy applications.

Technical Specifications

• Product Type: DH+/RIO Communication Module
• Catalog Number: 1756-DHRIO
• Communication Protocols: Data Highway Plus (DH+), Remote I/O (RIO)
• DH+ Baud Rates: Supports 57.6 kbps, 115.2 kbps, and 230.4 kbps (optimally selected based on cable length and network topology).
• Connections: Standard DH+ connectors, typically 9-pin D-shell.
• Module Slots: Occupies a single slot within a ControlLogix chassis.
• Status: Discontinued by manufacturer; limited support and availability through specialized providers like DD Parts Solution.

Applications

• Interconnecting ControlLogix Systems: Facilitate communication between multiple ControlLogix controllers operating on DH+ networks.
• Interfacing with Remote Devices: Essential for communication with various remote I/O devices in distributed control architectures.
• Sustaining Legacy Operations: Critical for maintaining and repairing existing industrial automation systems that depend on DH+ communication.
• System Upgrade Pathways: Provides a temporary solution while planning and implementing migrations to modern Ethernet/IP-based control systems.
• Process Control and Data Acquisition: Enables data flow for monitoring and controlling industrial processes in established environments.
• Machine Tool Control: Used in older machine control applications requiring DH+ and RIO interfaces.

Why Choose This Model?

• Preserve Existing Investments: Extend the operational life of your DH+ and RIO-based industrial systems without requiring a complete overhaul.
• Maintain Critical Operations: The 1756-DHRIO ensures continued functionality for processes that must remain online.
• Expert Support for Legacy Systems: DD Parts Solution offers unparalleled expertise in sourcing and supporting discontinued modules, providing peace of mind.
• Guidance for Modernization: We don't just provide parts; we offer expert advice on how to strategically migrate to more advanced and efficient communication platforms like Ethernet/IP when the time is right.
• Reliable Sourcing: Access to rigorously tested used and refurbished modules ensures dependable performance, reducing downtime.
• Comprehensive Solutions: From securing hard-to-find components to offering migration strategies, DD Parts Solution is your partner in industrial automation.

Order Now

Ensure the continued performance of your legacy industrial systems with the Allen-Bradley 1756-DHRIO ControlLogix DH+/RIO Communication Module. Contact DD Parts Solution today to inquire about availability of used or refurbished units and to discuss your specific communication needs. Our team of industrial automation experts is ready to assist you in finding the right solutions, whether it's for maintaining current operations or planning future system modernizations. Explore our wider range of Allen-Bradley Industrial Automation Products for all your control, drive, motor, HMI, and accessory requirements, or return to our ControlLogix Controllers main category to discover more models and specifications.