Genuine Allen-Bradley 1756-RIO ControlLogix Remote I/O Communication Module | 1756 Series — Verified Source
The Allen-Bradley 1756-RIO is a critical Remote I/O communication module within Rockwell Automation’s ControlLogix platform, designed to bridge legacy 1771 I/O systems with modern ControlLogix controllers over the Remote I/O network. As a discontinued yet widely deployed component in continuous-process, discrete manufacturing, and critical infrastructure environments, the 1756-RIO commands a premium in the secondary market — making it a frequent target for counterfeit substitution, refurbished-as-new misrepresentation, and grey-market diversion. Procurement teams that source from unverified channels risk receiving modules with degraded firmware, cloned ASICs, or falsified date codes that pass visual inspection but fail under load.
Konmask sources the 1756-RIO exclusively through documented supply chains with full traceability back to authorized distributors and verified surplus channels. Every unit we ship carries a genuine Rockwell Automation part number, unbroken factory labeling, and a traceable lot code. Our procurement and QC teams apply the term genuine with strict internal criteria: a module is only listed as authentic after passing our 4-step verification process detailed below. We do not list, repackage, or resell units that fail any stage of inspection — no exceptions.
Technical Specifications
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Part Number | 1756-RIO |
| Series | ControlLogix 1756 |
| Module Type | Remote I/O Communication Module |
| Network Protocol | Remote I/O (RIO) — Allen-Bradley proprietary |
| Backplane Interface | ControlLogix 1756 backplane |
| RIO Data Rate | 57.6 Kbps, 115.2 Kbps, 230.4 Kbps |
| Max RIO Nodes | Up to 32 adapter nodes per scanner |
| I/O Capacity | Up to 4096 discrete I/O points (input/output combined) |
| Operating Voltage | Supplied via ControlLogix backplane (no external power required) |
| Operating Temperature | 0 °C to 60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to 85 °C |
| Relative Humidity | 5% to 95% non-condensing |
| Dimensions (H × W × D) | Approx. 147 mm × 45 mm × 122 mm (standard 1756 single-slot) |
| Weight | Approx. 260 g |
| Agency Certifications | UL, CE, C-Tick |
| Product Status | Discontinued (legacy support) |
Specifications verified against Allen-Bradley / Rockwell Automation official documentation (Publication 1756-UM514).
Our 4-Step Quality Verification Process
Every 1756-RIO unit processed by Konmask passes all four stages before it is listed for sale or shipped to a customer.
Step 1 — Label & Traceability Audit
We verify the Rockwell Automation catalog label, series letter, revision code, date code, and lot number against known-authentic reference databases. Labels are inspected under magnification for print quality, font consistency, and adhesive integrity. Any unit with tampered, reprinted, or mismatched labels is immediately quarantined.
Step 2 — Physical & Component Inspection
The module is opened (where non-destructive) or inspected via high-resolution imaging to confirm PCB markings, ASIC part numbers, and component placement match the genuine 1756-RIO bill of materials. We check for signs of re-soldering, component substitution, or board washing that indicate refurbishment.
Step 3 — Functional Power-On & Communication Test
Each unit is bench-tested in a live ControlLogix chassis. We verify successful backplane recognition, firmware version reporting, RIO network initialization at all supported baud rates, and stable I/O data exchange. Test results are logged and retained per unit serial number.
Step 4 — Documentation Package Preparation
Upon passing Steps 1–3, we prepare the shipment documentation package, which may include: Certificate of Conformance (COC), Functional Test Report, High-Resolution Inspection Photos, Packing List with serial/lot numbers, and Country of Origin (COO) Declaration. Documents are available upon request before or after purchase.
Key Features & Benefits
- Seamless Legacy Integration: Connects ControlLogix controllers directly to existing 1771 Remote I/O networks, protecting capital investment in legacy field wiring and I/O racks without requiring a full system migration.
- High-Capacity I/O Scanning: Supports up to 4,096 discrete I/O points across 32 adapter nodes, meeting the demands of large-scale process and discrete manufacturing cells.
- Multi-Baud Rate Flexibility: Operates at 57.6, 115.2, and 230.4 Kbps, compliant with Allen-Bradley Remote I/O network specifications (Publication 1770-6.5.16), enabling compatibility across mixed-vintage installations.
- Single-Slot ControlLogix Form Factor: Occupies one standard 1756 backplane slot, maximizing chassis density in space-constrained control panels.
- Deterministic Scan Cycle: Delivers predictable, low-latency I/O updates essential for time-critical control loops in accordance with IEC 61131-3 controller timing requirements.
- Rockwell Software Integration: Fully configurable via RSLogix 5000 / Studio 5000 Logix Designer, with native Add-On Profile (AOP) support for streamlined commissioning.
Typical Applications
- Oil & Gas: Pipeline SCADA systems migrating from PLC-5 / SLC-500 platforms to ControlLogix while retaining existing 1771 field I/O infrastructure.
- Automotive Manufacturing: Body-in-white and powertrain assembly lines using legacy RIO-networked tooling stations integrated into a ControlLogix supervisory controller.
- Water & Wastewater Treatment: Pump station and clarifier control panels where 1771 I/O racks handle field instrumentation and the 1756-RIO provides the ControlLogix gateway.
- Food & Beverage Processing: Continuous-process lines (filling, pasteurization, CIP) with established 1771 I/O wiring that must interface with a modern ControlLogix redundancy system.
- Power Generation & Utilities: Substation automation and turbine control systems requiring deterministic RIO communication between distributed I/O panels and a central ControlLogix controller.
- Mining & Minerals Processing: Conveyor, crusher, and flotation cell control systems where 1771 RIO networks are embedded in the existing plant DCS architecture.
Compatible System Components
- 1756-L6x / L7x / L8x ControlLogix Controllers
- 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 Chassis
- 1756-PA72 / 1756-PB72 Power Supplies
- 1771-ASB / 1771-ASBT Remote I/O Adapter Modules
- 1771-OA, 1771-IA, 1771-OW, 1771-IQ I/O Modules (legacy 1771 rack)
- 1756-EN2T / 1756-ENBT EtherNet/IP Communication Modules (same chassis)
- 1756-RM / 1756-RM2 Redundancy Modules
- RSLogix 5000 / Studio 5000 Logix Designer (v16.0 and above)
Global Sourcing & Shipping Capabilities
Konmask serves industrial buyers across Asia-Pacific, the Middle East, Europe, and the Americas. We maintain stock in bonded warehouse facilities and can fulfill urgent MRO requirements with same-day or next-business-day dispatch for in-stock units.
- Primary Service Regions: China (domestic), Southeast Asia, South Asia, Middle East & North Africa, Eastern Europe, South America
- Export Packaging Standard: Anti-static bag → foam-lined inner box → double-wall corrugated outer carton with shock-indicator label. Conforms to ISTA 2A transit testing guidelines.
- Logistics Partners: DHL Express, FedEx International Priority, SF International, and sea-freight consolidation for bulk orders
- Lead Time: In-stock units: 1–3 business days. Sourced-to-order: 5–15 business days depending on origin.
- Export Documentation: Commercial Invoice, Packing List, COO Declaration, and HS Code 8537.10 classification provided as standard
Certifications & Compliance Statement
- UL Listed — Underwriters Laboratories (File E65584)
- CE Marked — EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
- C-Tick / RCM — Australian Communications and Media Authority
- RoHS Compliant — EU Directive 2011/65/EU (as applicable to original manufacture date)
Konmask Quality Commitment: We warrant that every 1756-RIO unit shipped under this listing is genuine Allen-Bradley manufacture, has passed our 4-step verification process, and is accurately represented in condition and revision. If any unit fails to match its documented specification upon receipt, Konmask will arrange replacement or full refund at no cost to the buyer. Our quality commitment is backed by documented inspection records retained for a minimum of 3 years.
How to Order
- Submit Your Inquiry: Add to cart and check out, or contact us directly at [email protected] with your required quantity, delivery timeline, and any specific revision or date-code requirements.
- Receive Quotation & Documentation Preview: We respond within 24 hours with a formal quotation, available stock confirmation, and a preview of the inspection documentation package for your specific unit(s).
- Confirm & Ship: Upon order confirmation and payment, we dispatch with full tracking and provide the complete documentation package (COC, Test Report, Photos, Packing List, COO Declaration) by email before or with shipment.
Sample & Test Report Policy: For orders above USD 500 or for first-time buyers requiring qualification, we can provide a pre-shipment functional test report and high-resolution inspection photos at no additional charge. Physical samples for destructive testing are available subject to negotiation.
Authenticity & Trust FAQ
Q: How can I verify that the 1756-RIO I receive is genuine Allen-Bradley?
A: Every unit ships with a Certificate of Conformance (COC) documenting the catalog number, series, date code, lot number, and our inspection findings. The module’s label, PCB markings, and firmware version can be cross-referenced against Rockwell Automation’s published specifications. We also provide high-resolution inspection photos taken during our QC process. If you have access to a ControlLogix chassis, the module will self-identify with the correct catalog number and firmware revision in RSLogix 5000 / Studio 5000 upon power-up.
Q: What is Konmask’s warranty policy for the 1756-RIO?
A: We provide a 90-day functional warranty from the date of shipment. If the module fails to perform to specification under normal operating conditions within this period, we will replace the unit or issue a full refund — including return shipping costs. Warranty claims require the original COC and a brief description of the failure mode. Extended warranty arrangements are available for volume orders; please inquire at the time of purchase.
Q: Can Konmask provide a functional test report before I commit to purchase?
A: Yes. For qualified buyers and orders meeting our minimum threshold, we provide a pre-shipment functional test report documenting the bench-test results (backplane recognition, firmware version, RIO network initialization, and I/O data exchange confirmation) at no additional charge. Contact [email protected] to request this documentation as part of your pre-purchase due diligence.
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