A-B 1756-CNBR

A-B 1756-CNBR is a communication module produced by Allen Bradley, which belongs to the ControlNet bridge communication module and is particularly
The feature is that it supports redundant communication media 123. The following is a detailed description of the product:
Product Description

A-B 1756-CNBR is an interface module used for communication within a ControlNet network. It has two ControlNet ports and supports simplex and redundant ControlNet networks. In addition, it also features a Network Access Protocol (NAP) and a shielded RJ-45 8-pin physical interface.

Product parameters

Power supply: redundant 1756-PA75R, 1756-PB75R, 1756-PSCA2; Standard 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B2.

Working temperature: 32-140 degrees Fahrenheit (0-60 degrees Celsius) 2.

Dimensions: 5.51 x 4.41 x 5.71 inches.

Communication cable: 1786-RG6 four shielded RG6 coaxial cable 2.

Power consumption (maximum): 5.5 watts.

Isolation voltage: 30V continuous voltage 2.

Backboard current: 1.7mA at 24V DC; 970mAh at 5.1V DC.

Product specifications

The A-B 1756-CNBR module has two control network BNC ports and one control network RJ45 port, supporting a communication rate of 5Mbps and 40-48 ControlNet logical connections.

Series and Features

A-B 1756-CNBR is part of the Allen Bradley ControlNet series and has redundant communication capability, which means it can prevent communication loss when a splitter or relay line is disconnected. In addition, the module also has high-performance processing capabilities, programmability, and can support multiple communication interfaces.

Function and Application

The main function of A-B 1756-CNBR is to bridge the ControlNet link, transmit messages to devices on other networks, and monitor and control remote input/output modules 5 that are far away from the ControlLogix processor. It is used to build industrial automation systems, especially in applications that require redundant communication to improve reliability and stability.