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Allen-Bradley 1756-CNBR Product Introduction

Nov 21, 2025 Allen‑Bradley

Allen-Bradley 1756-CNBR is a high-performance automation control module launched by Rockwell Automation(Allen-Bradley).The following is a detailed introduction to the module.

Allen-Bradley 1756-CNBR

Basic information

Brand:Allen-Bradley

Model:1756-CNBR

Series:ControlLogix series

Technical specifications

Communication protocol:Supports DeviceNet V1 and V2 protocols(may also support other communication protocols,such as EtherNet/IP,Modbus TCP/IP,etc.,depending on the configuration and version of the module).

Communication rate:Provides a variety of communication rate options,such as 125Kbps,250Kbps,500Kbps,etc.(may also support higher communication rates,such as 5Mbps,depending on the specific module model and configuration).

Network topology:Supports multiple network topologies such as bus,tree,star,etc.

Connection port:Usually has 1 or more DeviceNet ports(or other types of communication ports),supports standard connectors.

Maximum number of nodes:supports the connection of up to 64 or more device nodes(depending on the network configuration and module model).

Electrical characteristics:The input voltage is usually 24V DC(±10%),and parameters such as current consumption and isolation voltage vary according to the specific model.

Functional characteristics

Data exchange:supports multiple types of data exchange such as I/O data,configuration data,diagnostic data,etc.

Real-time:provides low-latency communication,suitable for real-time control applications.

Diagnostic function:provides detailed network diagnostic information for easy troubleshooting and maintenance.

Compatibility:seamlessly integrates with other Rockwell Automation products(such as Logix5000 controllers)to form a complete automation control system.

Programmability:Parameters can be set and functions can be customized through programming or configuration software to meet different application requirements.

Allen-Bradley 1756-CNBR

Application scenarios

Due to its excellent performance and high reliability,the Allen-Bradley 1756-CNBR module is widely used in the following fields

Manufacturing:Equipment connection and control in automated production lines.

Logistics and warehousing:Equipment communication and data exchange in logistics systems.

Food and beverage processing:Equipment monitoring and control on production lines.

Water treatment and environmental protection:data collection and remote monitoring in environmental protection equipment.

Allen-Bradley 1756-CNBR SER E ControlNet Redundant Bridge Module
Allen-Bradley
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Allen-Bradley 1756-CNBR

Nov 25, 2025

The Allen Bradley Factory Sealed 1756-CNBR SER E ControlNet Redundant Bridge Module is a reliable and efficient solution for ControlNet network management. This module provides a redundant bridge for ControlNet communication and allows for

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