Product Description:

The Allen-Bradley 1756-DHRIO is a ControlLogix communication module that provides an interface to Data Highway Plus (DH+) and Remote I/O (RIO) networks. It acts as a bridge, allowing communication between devices on DH+ networks and other modules in a ControlLogix backplane. It also functions as a RIO scanner, enabling the ControlLogix controller to exchange data with remote RIO devices.

Due to the older nature of DH+ technology, new 1756-DHRIO modules are no longer manufactured. At DD Parts Solution, we may offer used or refurbished modules to support existing legacy systems. It's crucial to understand the limitations of DH+ and consider migrating to more modern technologies like Ethernet/IP for new applications or significant system upgrades.

Key Features (Based on original documentation - subject to limitations due to product age):

• DH+ Communication: Supports communication on Data Highway Plus networks.
• RIO Scanner: Enables data exchange with Remote I/O devices.
• Two Channels: The module has two channels for DH+ connection.
• ControlLogix Integration: Designed for use in ControlLogix chassis.

Technical Specifications (Consult official Rockwell documentation for precise details - subject to limitations due to product age):

• Product Type: DH+/RIO Communication Module
• Catalog Number: 1756-DHRIO
• Communication: DH+, RIO
• Baud Rates (DH+): 57.6 kbps, 115.2 kbps, 230.4 kbps (depending on cable length)
• Connections: DH+ connectors (typically 9-pin connectors)
• Status: Discontinued (limited support available)

Applications (Product age caveats apply):

• Interconnecting controllers on DH+ networks.
• Communicating with remote RIO devices.
• Legacy systems using DH+ that require module replacements.

Why contact DD Parts Solution for the 1756-DHRIO?

• Support for Legacy Systems: We can assist with locating used/refurbished modules to keep existing DH+ systems running.
• Industrial Automation Expertise: Our team has knowledge in industrial automation and can help find solutions for your legacy communication needs.
• Migration Guidance: We can help identify migration options to more modern communication platforms, such as Ethernet/IP, offering more efficient and better-supported solutions.