Allen-Bradley 1756-CN2 ControlLogix ControlNet Communication Bridge
Manufacturer: Allen Bradley
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Part Number: 1756-CN2
Condition：New with Original Package
Product Type: ControlNet Communication Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1756-CN2 ControlLogix ControlNet Communication Bridge Module
Product Overview
The Allen-Bradley 1756-CN2 is a high-performance ControlNet™ communication bridge designed for the ControlLogix® platform. It provides a deterministic, high-speed link for concurrent dissemination of time-critical control data and non-time-critical information. By bridging the ControlLogix backplane to a ControlNet network, this module facilitates robust real-time communication between controllers, I/O modules, and other networked devices.
Equipped with dual BNC connectors, the 1756-CN2 supports media redundancy (Channels A and B), ensuring system availability even in the event of a cable fault. This module is an essential component for distributed control architectures where scheduled, repeatable data transfer is mandatory for process stability and safety.
Technical Specifications
Detailed hardware parameters and network performance ratings for the 1756-CN2:
| Parameter | Specification Details |
| Model Number | 1756-CN2 |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | ControlNet Communication Module |
| Data Transfer Rate | 5 Mbps |
| Logix Connections | Up to 128 Connections |
| Network Capacity | Up to 99 Nodes |
| Network Ports | 2 BNC (Channels A & B), 1 RJ45 (Network Access Port) |
| Backplane Current (5.1V DC) | 1100 mA |
| Backplane Current (24V DC) | 3 mA |
| Power Dissipation | 5.6 Watts |
| Isolation Voltage | 30V (Continuous), Basic Insulation Type |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to +85 °C (-40 °F to +185 °F) |
| Weight | 0.13 kg (0.29 lbs) |
| Certifications | CE, UL, cUL, CSA, C-Tick, Marine |