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Allen-Bradley 1756-CN2 ControlLogix ControlNet Dual Capacity Bridge Module

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Allen-Bradley 1756-CN2

by Allen-Bradley

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OverviewThe Allen-Bradley 1756-CN2 ControlLogix ControlNet Dual Capacity Bridge Module is a vital element for contemporary industrial automation setups, meticulously crafted to enhance communication within ControlLogix systems. This robust module functions as a crucial connection point, seamlessly integrating ControlNet networks with remote I/O units and other devices. It provides high-speed I/O bridging, accommodating up to 100 connections, thereby offering extensive distributed I/O management. The 1756-CN2 ensures efficient and dependable transmission of both scheduled information via produced/consumed tags and unscheduled communication through MSG instructions. Beyond core data transfer, it facilitates essential messaging for system configuration, programming, and operator interface interactions, including vital upload and download functionalities. This module is the ultimate solution for establishing smooth, high-performance data flow and communication across intricate ControlLogix networks, ensuring operational continuity and efficiency.Key Features Dual Capacity ControlNet Bridging: Efficiently links ControlNet networks and remote I/O modules, supporting up to 100 simultaneous connections for broad network integration. High-Speed I/O Functionality: Guarantees swift and reliable data exchange, essential for real-time industrial automation applications and responsive system control. Scheduled and Unscheduled Data Transfer: Supports both produced/consumed tags for predictable, periodic data and MSG instructions for flexible, on-demand communication with ControlNet nodes. Comprehensive Messaging Support: Enables seamless transfer of configuration, programming, and operator interface data, including essential upload and download capabilities for system management. Enhanced Network Efficiency: Optimizes data flow and reduces latency across ControlLogix systems, contributing to improved overall operational performance. Robust and Reliable Design: Constructed to Allen-Bradley's rigorous quality standards, ensuring long-term durability and dependable operation in demanding industrial environments. Technical Specifications Model: 1756-CN2 Type: Dual Capacity ControlNet Bridge Module Capacity: Up to 100 Connections Data Transfer: Supports produced/consumed tags for scheduled data transfer Communication Type: High-speed I/O bridge Module Type: Provides bridge functionality between ControlNet and other networks ControlNet Links: Bridges messages to remote I/O modules and devices MSG Instruction Support: Unscheduled messaging with ControlNet nodes Upload/Download Capability: Supports data for configuration, programming, and operator interfaces Dimensions: 6.5 in. (H) x 5.5 in. (W) x 3.25 in. (D) Power Supply: 5V DC via ControlLogix chassis Applications Industrial Automation Systems: Indispensable for large-scale automation architectures requiring efficient management of numerous remote I/O modules and distributed control. ControlLogix Controller Integration: Perfect for seamlessly integrating with ControlLogix controllers to extend communication capabilities and manage remote devices effectively. High-Speed Data Transfer Networks: Ideal for environments where rapid and dependable data exchange between decentralized I/O modules is paramount, such as high-production manufacturing. Network Interoperability Solutions: Bridges communication gaps between ControlNet and various other industrial networks, ensuring smooth data flow across diverse systems. Remote Process Control: Enables operators to robustly monitor and control remote industrial processes and equipment from a central ControlLogix system. Complex Machine Control: Facilitates sophisticated control strategies for intricate machinery by providing reliable and expansive I/O connectivity. Why Choose This Model?As an Allen-Bradley product, the 1756-CN2 guarantees superior build quality and long-term performance, minimizing operational disruptions.Order NowOptimize your automation infrastructure with the Allen-Bradley 1756-CN2. Contact us for pricing and availability.FAQWhat is the primary function of the Allen-Bradley 1756-CN2?The 1756-CN2 acts as a bridge module, linking ControlNet networks with remote I/O units and other devices, facilitating high-speed data transfer within ControlLogix environments.How many connections can the 1756-CN2 support?This module is engineered to support up to 100 connections, allowing for extensive network integration and distributed I/O management.Does this module support both scheduled and unscheduled data transfer?Yes, it supports scheduled data transfer via produced/consumed tags and unscheduled communication using MSG instructions for flexible data exchange.What are the typical applications for the 1756-CN2?It is commonly used in industrial automation systems, ControlLogix controller integration, high-speed data transfer networks, network interoperability solutions, remote process control, and complex machine control.

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PRODUCT DETAILS

Allen-Bradley 1756-CN2

Overview

This is a genuine Allen-Bradley component from the ControlLogix 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 ControlLogix 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:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the ControlLogix family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1756-CN2
  • Type: Dual Capacity ControlNet Bridge Module
  • Capacity: Up to 100 Connections
  • Data Transfer: Supports produced/consumed tags for scheduled data transfer
  • Communication Type: High-speed I/O bridge
  • Module Type: Provides bridge functionality between ControlNet and other networks
  • ControlNet Links: Bridges messages to remote I/O modules and devices
  • MSG Instruction Support: Unscheduled messaging with ControlNet nodes
  • Upload/Download Capability: Supports data for configuration, programming, and operator interfaces
  • Dimensions: 6.5 in. (H) x 5.5 in. (W) x 3.25 in. (D)
  • Power Supply: 5V DC via ControlLogix chassis

Applications

  • Industrial Automation Systems: Indispensable for large-scale automation architectures requiring efficient management of numerous remote I/O modules and distributed control.
  • ControlLogix Controller Integration: Perfect for seamlessly integrating with ControlLogix controllers to extend communication capabilities and manage remote devices effectively.
  • High-Speed Data Transfer Networks: Ideal for environments where rapid and dependable data exchange between decentralized I/O modules is paramount, such as high-production manufacturing.
  • Network Interoperability Solutions: Bridges communication gaps between ControlNet and various other industrial networks, ensuring smooth data flow across diverse systems.
  • Remote Process Control: Enables operators to robustly monitor and control remote industrial processes and equipment from a central ControlLogix system.
  • Complex Machine Control: Facilitates sophisticated control strategies for intricate machinery by providing reliable and expansive I/O connectivity.

Why Choose the 1756-CN2?

As an Allen-Bradley product, the 1756-CN2 guarantees superior build quality and long-term performance, minimizing operational disruptions.

Availability & Shipping

  • In stock: 1756-CN2 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 1756-CN2 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1756-CN2 acts as a bridge module, linking ControlNet networks with remote I/O units and other devices, facilitating high-speed data transfer within ControlLogix environments.

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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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.

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