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Allen-Bradley 1756-CN2R ControlLogix ControlNet Redundant Communication Bridge Module

SKU: NO100854
Model: 1756-CN2R
Product Condition: New - Open Box
$899.95

Allen-Bradley 1756-CN2R ControlLogix ControlNet communication module designed for redundant network architectures, providing high-speed ControlNet connectivity for distributed I/O and PLC systems.

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One year warranty
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Allen Bradley Programmable Logic Controllers (PLCs) Automation
Product Description

Allen-Bradley 1756-CN2R ControlLogix Redundant ControlNet Communication Module

The Allen-Bradley 1756-CN2R is a ControlLogix ControlNet communication module engineered to provide reliable, high-speed network connectivity within ControlLogix PLC systems. This module supports redundant ControlNet topologies and installs directly into a single slot of a compatible 1756 chassis.

Redundant ControlNet Communication Architecture

  • Dual ControlNet BNC ports supporting redundant network configuration
  • ControlNet communication rate up to 5 Mbps
  • Supports up to 99 ControlNet nodes
  • Handles up to 131 total communication connections

ControlLogix Backplane-Integrated Design

The 1756-CN2R interfaces directly with the ControlLogix backplane, drawing power from the chassis while maintaining deterministic ControlNet data transfer. The integrated USB port supports configuration and maintenance functions.

Industrial Control Applications

  • Redundant ControlNet PLC architectures
  • Distributed I/O networks using ControlNet
  • ControlLogix systems requiring deterministic peer-to-peer communication
Specifications
Specifications
MPN 1756-CN2R
Product Condition New - Open Box
Shipping Length (in.) 14
Shipping Width (In.) 10
Shipping Height (In.) 8
Item Returns This item can be returned
Brand Allen-Bradley
Manufacturer Rockwell Automation
Product Line ControlLogix
Catalog Number / MPN 1756-CN2R
Category Programmable Logic Controllers (PLCs)
Module Type ControlNet Communication Bridge Module
Configuration Redundant
Supported Network ControlNet
ControlNet Communication Rate 5 Mbps
Maximum Number of Nodes 99
Maximum Communication Connections 131
Maximum Logix Connections 128
Communication Ports Two (2) ControlNet BNC ports; One (1) USB port
USB Data Transfer Rate 12 Mbps
Backplane Current 1.3 A at 5.1 VDC; 3 mA at 24 VDC
Power Dissipation 6.7 W
Thermal Dissipation 22.9 BTU/hr
Slot Width 1 slot
Mounting Type ControlLogix chassis backplane mount
Compatible Chassis 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Compatible Power Supplies (Standard) 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
Compatible Power Supplies (Redundant) 1756-PA75R, 1756-PB75R, 1756-PSCA2
Supported Communication Cable 1786-RG6 quad-shield RG6 coaxial cable
Operating Temperature Range 32 to 140 °F (0 to 60 °C)
Enclosure Type Open type
Dimensions (L × W × H) 5.51 × 4.41 × 5.71 in
What's in the box?
  • 1 x Allen-Bradley 1756-CN2R ControlNet communication module 

 

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