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Allen-Bradley 1771-ACNR/B
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 1771-ACNR/B is a high-performance, dual-port ControlNet interface module crafted for exceptional dependability within demanding industrial automation environments. This module enables effortless integration into existing PLC-5 architectures, featuring redundant media capabilities for continuous, fault-tolerant communication. Compatible with multiple ControlNet specifications, including versions 1.0, 1.25, and 1.5+, the 1771-ACNR/B delivers dependable data transfer, significantly boosting network stability and communication integrity for essential operations. As a crucial 1771 I/O adapter, it extends the operational lifespan and efficiency of established systems by offering a dependable link to modern ControlNet networks.Key Features Dual-Port ControlNet Connectivity: Provides redundant media operation to maximize fault tolerance and system uptime. Extensive ControlNet Compatibility: Fully supports ControlNet protocols 1.0, 1.25, and 1.5+, ensuring versatile system integration. 1771 I/O Adapter Functionality: Designed for straightforward and seamless connection with legacy PLC-5 and 1771 I/O components. Series B Enhancements: Incorporates advanced design improvements for superior reliability and communication stability. High-Speed Deterministic Transfer: Facilitates real-time industrial control with guaranteed data delivery. Certified Compliance: Meets stringent international standards with UL, CE, and RoHS certifications. Technical Specifications Model: 1771-ACNR/B Series: B Communication Protocol: ControlNet Port Configuration: Two-Port, Redundant Media Supported Protocols: ControlNet 1.0, 1.25, and 1.5+ I/O Interface: 1771 I/O Adapter Backup System Compatibility: The 1771-ACNR15 model specifically supports the ControlNet PLC-5 backup system (1785-CHBM) Mounting: PLC-5 / 1771 Chassis-Based Certifications: UL, CE, RoHS Applications Industrial Automation & Process Management: Offers robust, real-time network communication vital for intricate industrial processes. SCADA & Distributed Control Solutions: Improves system integration and ensures high data reliability across distributed networks. Factory & Machine Control: Supports advanced automation processes requiring network redundancy and precise communication. Material Handling & Robotics: Ensures smooth and accurate system operation, minimizing interruptions in automated logistics. Power & Utility Networks: Ideal for high-availability industrial automation where continuous operation is critical. Why Choose This Model?Unparalleled ReliabilityThe dual-port redundant media design delivers superior fault tolerance, guaranteeing uninterrupted operations.Effortless Legacy IntegrationSpecifically engineered as a 1771 I/O adapter, it extends the lifespan and functionality of your current PLC-5 systems.Optimized PerformanceExperience high-speed, deterministic data transfer crucial for real-time industrial control applications.Future-Ready CompatibilityExtensive support for various ControlNet versions ensures compatibility with both contemporary and older network infrastructures.Global Regulatory ComplianceWith UL, CE, and RoHS certifications, this module adheres to global industrial standards, simplifying deployment and ensuring safety.Expert Support and AvailabilityBenefit from rapid worldwide shipping and access to a comprehensive selection of Allen-Bradley industrial automation products.Order NowElevate your industrial network capabilities with the Allen-Bradley 1771-ACNR/B.
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Allen-Bradley 1771-ACNR/B
Overview
This is a genuine Allen-Bradley component from the PLC-5 Platform (Legacy) family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Allen-Bradley catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Allen-Bradley automation ecosystem
- Engineered to integrate inside PLC-5 Platform (Legacy) installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the PLC-5 Platform (Legacy) family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Model: 1771-ACNR/B
- Series: B
- Communication Protocol: ControlNet
- Port Configuration: Two-Port, Redundant Media
- Supported Protocols: ControlNet 1.0, 1.25, and 1.5+
- I/O Interface: 1771 I/O Adapter
- Backup System Compatibility: The 1771-ACNR15 model specifically supports the ControlNet PLC-5 backup system (1785-CHBM)
- Mounting: PLC-5 / 1771 Chassis-Based
- Certifications: UL, CE, RoHS
Applications
- Industrial Automation & Process Management: Offers robust, real-time network communication vital for intricate industrial processes.
- SCADA & Distributed Control Solutions: Improves system integration and ensures high data reliability across distributed networks.
- Factory & Machine Control: Supports advanced automation processes requiring network redundancy and precise communication.
- Material Handling & Robotics: Ensures smooth and accurate system operation, minimizing interruptions in automated logistics.
- Power & Utility Networks: Ideal for high-availability industrial automation where continuous operation is critical.
Why Choose the 1771-ACNR/B?
Unparalleled Reliability
The dual-port redundant media design delivers superior fault tolerance, guaranteeing uninterrupted operations.
Effortless Legacy Integration
Specifically engineered as a 1771 I/O adapter, it extends the lifespan and functionality of your current PLC-5 systems.
Optimized Performance
Experience high-speed, deterministic data transfer crucial for real-time industrial control applications.
Future-Ready Compatibility
Extensive support for various ControlNet versions ensures compatibility with both contemporary and older network infrastructures.
Global Regulatory Compliance
With UL, CE, and RoHS certifications, this module adheres to global industrial standards, simplifying deployment and ensuring safety.
Expert Support and Availability
Benefit from rapid worldwide shipping and access to a comprehensive selection of Allen-Bradley industrial automation products.
Availability & Shipping
- ▸In stock: 1771-ACNR/B ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 1771-ACNR/B ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Allen-Bradley
Machine down? We ship parts the same day.
New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
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What Verified Buyers Say
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.