1756-CN2R | Allen-Bradley ControlLogix Communication Module

The Allen-Bradley 1756-CN2R is a ControlLogix communication module designed for high-performance ControlNet connectivity within the ControlLogix controller platform. It offers redundant ControlNet network support and multiple communication ports for seamless integration and robust network performance in industrial environments.

Key Features:

Part Number: 1756-CN2R
Manufacturer: Rockwell Automation
Series: ControlLogix
Product Type: Communication Module
Network Topology: Redundant ControlNet communication
ControlNet Transmission Speed: 5 Mbps
Maximum Nodes: 99 nodes
Maximum Logix Connections: 128 connections (131 total connections)
Ports:
- Two (2) BNC ControlNet ports
- One (1) USB port (12 Mbps data transfer rate for configuration purposes, not for data communication)
Power Dissipation: 6.7 Watts (22.9 BTU/hr)
Mounting: Fits into any standard 1756 chassis
Operating Temperature: 0°C to 60°C (32°F to 140°F)
Humidity Range: 5% to 95% (non-condensing)
Vibration Resistance: 2G (10–500 Hz)
Shock Resistance: 30G operational shock

Technical Specifications:

Input Current (5V DC): 1300 mA
Input Current (24V DC): 3 mA
Isolation Voltage: 30V DC continuous; Basic insulation tested at 500V for 1 minute
Communication Cable: Compatible with 1786-RG6 quad shield RG6 coaxial cable
Thermal Dissipation: 6.7 W (22.9 BTU/hr)
Dimensions: 5.51 x 4.41 x 5.71 inches (140 x 112 x 145 mm)
Weight: 0.64 lbs (0.293 kg)
Chassis Compatibility: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Power Supply Compatibility (Standard): 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
Power Supply Compatibility (Redundant): 1756-PA75R, 1756-PB75R, 1756-PSCA2
Backplane Current: 1.3A at 5.1V DC; 3mA at 24V DC

General Information:

Product Type: Communication Module for ControlNet
Communication Protocol: ControlNet (using CIP over ControlNet)
Redundant Configuration Type: Ensures network reliability in mission-critical applications
Maximum Number of Communication Connections: 131
Data Transfer Speed (USB Port): 12 Mbps (for configuration use)
Network Compatibility: Supports a maximum of 99 ControlNet nodes
Enclosure Type: Open
Environmental Rating: T4 IEC temperature code, T4A North American temperature code

Revisions and Series Information:

1756-CN2R/A, Series A, Rev A
1756-CN2R/B, Series B, Rev B
1756-CN2R/C, Series C, Rev C

Applications:

Distributed I/O Topology: Enables effective implementation of distributed I/O networks across large industrial systems.
Human-Machine Interface (HMI): Communication with HMI systems for process monitoring and control.
SCADA Systems: Used in Supervisory Control and Data Acquisition systems for real-time data acquisition and control.
ControlNet Redundancy: Ideal for applications requiring high availability and redundancy in the network setup.

Ordering Information:

Catalog Number: 1756-CN2R
UPC: 10612598324436

About Us

Meloauto – Your Trusted Supplier for Original, Brand-New PLC and DCS Parts Meloauto offer a vast selection of products from globally recognized brands, including Allen Bradley, Bently Nevada, Honeywell, ABB, GE Fanuc, Siemens, Invensys Triconex, ICS Triplex, Foxboro, Yokogawa, Schneider, and Hima, among others. With tens of thousands of new parts ready to ship, Meloauto has successfully served customers across over 50 countries worldwide. We focus on supplying discontinued and hard-to-find items, ensuring each product is in brand-new, original condition.

Contact Us

Phone: +86-15915488782
Email: [email protected]
WhatsApp: +8615915488782
Business Hours: 24/7 service
Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China

Let us help you find the automation parts you need with reliable quality and dedicated support!