Allen Bradley 1756-CNBR is an automation control module produced by Rockwell Automation (Allen Bradley) and is part of the ControlLogix series. The following is a detailed introduction to the module:
1、 Main functions and purposes
The 1756-CNBR module is mainly used to achieve communication connection between the controller and the DeviceNet fieldbus network. It supports DeviceNet V1 and V2 protocols, which can meet communication needs in various industrial environments. This module plays an important role as a communication bridge in industrial automation systems, ensuring data exchange and instruction transmission between controllers and field devices.
2、 Technical specifications and parameters
Hardware specifications
Dimensions: Approximately 155mm x 110mm x 40mm
Weight: Approximately 0.5kg
Working temperature: 0 ℃ to 60 ℃
Storage temperature: -40 ℃ to 85 ℃
Protection level: IP20
Communication parameters
Communication protocol: DeviceNet V1 and V2
Communication speed: 125Kbps, 250Kbps, 500Kbps
Network topology: bus type, tree type, star type
Connection port: 1 DeviceNet port, supporting standard 5-pin DeviceNet connectors
Maximum number of nodes: 64 devices
Electrical characteristics
Input voltage: 24V DC (± 10%)
Current consumption: maximum 1.2A
Isolation voltage: 1500V AC
3、 Functional characteristics
Data exchange: Supports the exchange of I/O data, configuration data, and diagnostic data to ensure data integrity and accuracy.
Real time performance: Provides low latency communication, suitable for real-time control applications, ensuring system response speed and stability.
Diagnostic function: Provides detailed network diagnostic information for easy troubleshooting and maintenance.
Compatibility: Seamless integration with other products of Rockwell Automation, such as Logix5000 controllers, facilitates system integration and upgrades for users.
Configuration method: Users can set module parameters and network configuration through RSLogix 5000 software, and support EDS (Electronic Data Sheet) files for easy and fast device configuration.
4、 Application scenarios
Due to its excellent performance and high reliability, the 1756-CNBR module is widely used in manufacturing automation production lines, logistics and warehousing systems, food and beverage processing, water treatment and environmental protection equipment, and other fields. In these applications, the module can provide efficient and stable communication support, ensuring the normal operation of the system and the accuracy of data transmission.
5、 Installation and maintenance
The 1756-CNBR module can be easily fixed inside the control cabinet through standard DIN rail installation. During installation, users need to pay attention to the node address settings and communication parameter configurations of the module. At the same time, in order to maintain the normal operation of the module and extend its service life, users need to regularly maintain and inspect it, including cleaning the surface of the module, checking the contact of connectors and cables, and checking the working status of the module.
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