1756-DHRIO/E Allen-Bradley ControlLogix DH+/RIO Module | Original Spare Parts

1756-DHRIO/E — Allen-Bradley ControlLogix Data Highway Plus & Remote I/O Communication Module (Original Spare Parts)

As a procurement manager sourcing critical Industrial Automation components, you need absolute confidence in what you’re buying. The 1756-DHRIO/E is a factory-sealed, 100% Brand New and Factory Sealed communication interface module manufactured by Allen-Bradley for the ControlLogix PLC System platform. Designed to bridge modern control architectures with legacy Data Highway Plus (DH+) and Remote I/O (RIO) networks, the 1756-DHRIO/E eliminates costly full-system replacements by enabling seamless coexistence between generations of automation infrastructure. This Original New Control Module is sourced directly and verified for authenticity — no counterfeits, no refurbished units.

Industrial facilities running legacy PLC-5 or SLC 500 systems face a common dilemma: upgrade entirely or maintain aging networks at rising cost. The 1756-DHRIO/E resolves this by acting as a high-performance gateway within the ControlLogix chassis, allowing Spare Parts integration without disrupting live production. Target industries include Oil & Gas, Power Plants, automotive manufacturing, and water treatment — anywhere legacy DH+ or RIO infrastructure must remain operational during phased modernization.

With dual isolated communication channels, broad protocol support, and full compatibility with RSLogix 5000, this Original New module delivers the reliability your site demands. Contact us today for pricing, lead time, and datasheet.

Technical Specifications & Selection Guide

Selection Tip: Choose the 1756-DHRIO/E when your ControlLogix system must communicate with existing DH+ or RIO networks. For pure EtherNet/IP requirements, consider the 1756-EN2T or 1756-EN2TR instead.

Core Features & Technical Advantages

• Dual-Protocol Support: Handles both Data Highway Plus and Remote I/O on a single Robust Control Module — no need for separate gateways.
• Dual Isolated Channels: Two independent communication ports enable redundant or split-network topologies for Heavy-duty industrial environments.
• Backplane-Powered: Draws power directly from the ControlLogix chassis — no external PSU required, simplifying installation.
• Master & Slave Modes: Configurable as DH+ master or slave, and RIO scanner or adapter, providing Precision flexibility for complex network designs.
• Field-Upgradable Firmware: Updated via ControlFLASH through the backplane, ensuring long-term compatibility with evolving PLC System standards.
• Legacy EOL System Support: Extends the operational life of PLC-5, SLC 500, and PanelView assets — a critical advantage for sites managing End-of-Life infrastructure.
• 100% Original and Brand New: Every unit is factory-sealed and traceable, meeting E-E-A-T standards for industrial procurement.

Typical Application Scenarios

✅ Oil & Gas: Upstream and midstream facilities rely on aging DH+ networks for SCADA and safety instrumented systems. The 1756-DHRIO/E integrates these networks into modern ControlLogix-based control rooms without field rewiring, reducing shutdown risk during upgrades.

Power Plants: Generation facilities with legacy RIO-based distributed I/O can retain existing field wiring while migrating control logic to ControlLogix. This module acts as the critical bridge, maintaining uptime during phased transitions.

✅ Automotive Manufacturing: Assembly lines built around PLC-5 or SLC 500 controllers benefit from the 1756-DHRIO/E’s ability to pass data between legacy and modern systems, enabling real-time production monitoring without full line replacement.

✅ Water & Wastewater Treatment: Municipal utilities operating long-distance RIO networks (up to 10,000 ft) use this module to maintain communication integrity across large treatment campuses while upgrading central control systems.

✅ Process Manufacturing: Chemical and pharmaceutical plants with validated legacy automation systems use the 1756-DHRIO/E to preserve existing I/O infrastructure during regulatory-compliant control system migrations.

Logistics & Professional Service

• ✅ 1-Year Warranty: Full coverage against manufacturing defects and performance failures on all Original New units.
• 2-Day Express Shipping Available: Fast Global Shipping to North America, Europe, Southeast Asia, and the Middle East. DHL / FedEx / UPS options supported.
• ✅ EOL Legacy System Support: Specialized in sourcing discontinued and hard-to-find Allen-Bradley Spare Parts for systems no longer in production.
• ✅ Full Documentation: Datasheet, installation manual, and certificate of conformity available upon request.
• ✅ Technical Pre-Sales Support: Our engineers assist with compatibility verification, network topology planning, and firmware version matching before purchase.

FAQ — Frequently Asked Questions

Q1: What is the price of the 1756-DHRIO/E?
Pricing for the 1756-DHRIO/E varies based on order quantity, delivery urgency, and current market availability. Because this is a specialized Industrial Automation Spare Parts item — particularly for EOL support — we recommend contacting us directly at sale@ninermas.com for a real-time quote. Volume discounts are available for orders of 2 units or more.

Q2: What is the lead time for the 1756-DHRIO/E?
In-stock units ship within 1-2 business days. For sourced or allocated stock, typical lead time is 3-7 business days depending on your region. Express 2-Day Shipping is available globally via DHL or FedEx.

Q3: Can you provide a Datasheet or Certificate of Origin for the 1756-DHRIO/E?
Yes. The official Allen-Bradley datasheet (publication 1756-TD006) and a Certificate of Origin confirming the module is 100% Original and Brand New are available upon request. Contact us before or after purchase.

Q4: Is the 1756-DHRIO/E compatible with Studio 5000 / RSLogix 5000?
Absolutely. The module is fully supported in RSLogix 5000 and Studio 5000 Logix Designer. Add-On Profiles (AOPs) are available from Rockwell Automation’s Product Compatibility and Download Center (PCDC).

Q5: Can the 1756-DHRIO/E communicate with PLC-5 and SLC 500 simultaneously?
Yes. Each of the two isolated DH+ channels can independently address up to 64 nodes, allowing concurrent communication with PLC-5 processors, SLC 500 controllers, and PanelView terminals on the same or separate networks.

Q6: What is the difference between the 1756-DHRIO/A, /B, /C, /D, and /E revisions?
Each revision letter denotes a hardware or firmware update from Allen-Bradley. The /E revision is the latest and most current version, offering improved firmware compatibility and support for newer ControlLogix chassis revisions. Always verify your chassis and software version compatibility before ordering.

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