Description

Allen-Bradley 1756-CN2R is a ControlLogix communication module of the Allen-Bradley brand under Rockwell Automation.The module is specially designed for establishing connections in redundant control network topologies.The following is a detailed introduction to the Allen-Bradley 1756-CN2R:

I.Product Overview

The Allen-Bradley 1756-CN2R communication module is part of the Logix controller platform and has two BNC control network ports for high-reliability and high-availability communication connections in redundant control network topologies.This module supports high-speed data transmission and is an indispensable component in industrial automation control systems.

II.Product Features

Redundant Configuration:The 1756-CN2R module has a redundant configuration type and is able to communicate at a rate of 5Mbps on up to 99 nodes,ensuring the reliability and stability of network communication.

High-speed data transmission:In addition to the dual ControlNet ports,the module also supports a transmission speed of up to 5Mbps,meeting the needs of industrial automation control systems with high real-time requirements.

Allen-Bradley 1756-PA72

Multiple interfaces:In addition to two BNC control network ports,the 1756-CN2R is also equipped with a USB 1.1 port that supports a full-speed 12 Mbps transfer rate(but note that it cannot be used for data communication purposes).In addition,the module also supports an RJ45 interface for easy connection and communication with other devices.

Wide compatibility:The 1756-CN2R module can be installed into any available slot of a standard chassis,such as 1756-A4,1756-A7,1756-A10,1756-A13,1756-A17,etc.,and used with a standard ControlLogix power supply.

Easy to configure and maintain:The module provides configuration objects and diagnostic functions that enable users to easily configure network parameters and monitor network status.

3.Technical Specifications

Part Number/Catalog Number:1756-CN2R

Series:ControlLogix

Module Type:Bridge Module

Maximum Number of Nodes:99

Maximum Number of Connections:131(including 128 Logix connections)

ControlNet Communication Rate:5 Mbps

Input Current:1300mA at 5.1V DC,3mA at 24V DC

Power Consumption and Heat Dissipation:Power consumption is 6.6W(or 6.7W,depending on different materials),and heat dissipation is 22.5 BTU per hour(or 22.9 BTU,depending on different materials).

Isolation voltage:30V DC

Basic insulation:tested at 500V for one minute

Enclosure type:open

Temperature standard:meets T4 IEC temperature standard and T4A North American temperature standard

Operating temperature range:0 to 60 degrees Celsius(32 to 140 degrees Fahrenheit)

Operating humidity:operates at 5%to 95%non-condensing relative humidity

Shock rate:30G

Maximum vibration:2G at 10-500Hz

Allen-Bradley 1756-PA72

IV.Application areas

The Allen-Bradley 1756-CN2R communication module is suitable for industrial automation and control applications that require the use of ControlNet networks,such as manufacturing,process control,etc.It is particularly suitable for implementing distributed I/O topologies,which can cover 1000 meters per segment and can be easily extended to control network segments of more than 1000 meters by using repeaters.

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