Allen-Bradley 1756-DHRIOK DH+/RIO Interface Module — Original Spare Parts

1756-DHRIOK — Allen-Bradley ControlLogix DH+/RIO Communication Interface Module | 100% Original Spare Parts

As a procurement manager sourcing critical industrial automation components, you need absolute confidence in both product authenticity and technical compatibility. The Allen-Bradley 1756-DHRIOK is a dual-protocol communication bridge module designed for the ControlLogix 1756 platform, enabling simultaneous Data Highway Plus (DH+) and Remote I/O (RIO) network connectivity within modern PLC System architectures. Every unit we supply is 100% Brand New and Factory Sealed, backed by full traceability to the original manufacturer.

Industrial facilities running legacy DH+ or RIO infrastructure face a persistent challenge: how to integrate proven field devices with next-generation control platforms without costly rip-and-replace projects. The 1756-DHRIOK solves this directly — it acts as a transparent bridge between your existing DH+ nodes and ControlLogix processors, preserving your installed base investment while unlocking the full capability of the Logix control environment. This makes it an indispensable Original Spare Parts solution for brownfield modernization across Oil & Gas, Power Plants, and discrete manufacturing sectors.

Whether you are maintaining uptime on a critical production line or executing a phased migration from PLC-5 to ControlLogix, this module delivers the reliability and protocol fidelity your operation demands. Contact us today for a fast quotation.

Typical Application Scenarios

• Oil & Gas: Maintain continuous communication between legacy DH+ field panels and ControlLogix-based safety and control systems without interrupting production.
• Power Plants: Integrate existing Remote I/O racks on turbine control systems into centralized ControlLogix architectures, reducing wiring costs and engineering complexity.
• Chemical Processing: Bridge PLC-5 or SLC 500 legacy nodes to modern Logix platforms in hazardous-area environments where system changes must be minimized.
• Automotive Manufacturing: Coordinate legacy conveyor and material handling equipment communicating via RIO with new ControlLogix-based line controllers.
• Water & Wastewater Treatment: Extend the operational life of distributed DH+ SCADA networks while upgrading central control infrastructure to current standards.

Core Features & Technical Advantages

1. Dual-Protocol Simultaneous Operation: Supports Data Highway Plus (DH+) at up to 230.4 Kbps and Remote I/O (RIO) at up to 57.6 Kbps concurrently — no protocol switching required.
2. Robust ControlLogix Integration: Chassis-mounted in any 1756 slot; communicates natively via the ControlLogix backplane for high-speed, deterministic data exchange.
3. Precision Legacy Compatibility: Executes PLC-5 typed read/write and SLC typed read/write MSG instructions, ensuring seamless interoperability with existing DH+ node populations.
4. Heavy-Duty Industrial Design: Rated for 0°C to 60°C operating range; conformal coating option available for corrosive or high-humidity environments.
5. Real-Time Diagnostics: Onboard LED status indicators and full RSLogix 5000 diagnostic integration provide immediate visibility into network health and fault conditions.
6. Hot-Swap Capable: Supports removal and insertion under power (RIUP) to minimize planned downtime during maintenance or module replacement.

Technical Specifications & Selection Guide

Selection Note: The K suffix in 1756-DHRIOK denotes conformal coating, making it the preferred choice for installations in humid, dusty, or chemically aggressive environments.

Logistics & Professional Service

• ✅ 2-Day Express Shipping Available: Urgent orders dispatched within 24 hours from verified stock. Global freight to North America, Europe, Southeast Asia, and the Middle East.
• ✅ 1-Year Warranty: All modules carry a 12-month warranty against manufacturing defects, with rapid advance replacement for critical production environments.
• ✅ Full Traceability Documentation: Certificate of Origin, packing list, and manufacturer test reports provided upon request.
• ✅ EOL Legacy System Support: We specialize in sourcing End-of-Life and hard-to-find Control Module components from verified new-old-stock inventory.
• ✅ Pre-Sales Technical Consultation: Certified automation engineers assist with compatibility verification and RSLogix 5000 configuration at no charge.

FAQ — Frequently Asked Questions

Q1: What is the price of the Allen-Bradley 1756-DHRIOK?
A: Pricing varies based on order quantity and market availability. Contact us at sale@ninermas.com for a real-time quotation. Volume discounts available for orders of 5 units or more.

Q2: How long is the lead time for the 1756-DHRIOK?
A: In-stock units ship within 1-2 business days. Sourced inventory typically ships in 3-7 business days. Expedited freight available for emergency shutdowns.

Q3: Is this module 100% Original and Brand New?
A: Yes. Every 1756-DHRIOK we supply is 100% Original and Brand New, sourced from authorized distribution channels or factory-sealed surplus. Certificate of Authenticity available upon request.

Q4: Can you provide the Datasheet for the 1756-DHRIOK?
A: Yes. Contact our team and we will provide the official Allen-Bradley User Manual and Installation Instructions PDF, plus RSLogix 5000 configuration guidance.

Q5: Is the 1756-DHRIOK compatible with all ControlLogix chassis?
A: Compatible with all standard 1756 ControlLogix chassis (4-slot through 17-slot). Not compatible with GuardLogix or CompactLogix platforms.

Q6: Can this module replace a 1756-DHRIO without hardware changes?
A: Yes. The 1756-DHRIOK is a direct drop-in replacement for the 1756-DHRIO with the addition of conformal coating. No wiring changes required.

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