A-B 1756-CN2R Product Overview

The A-B 1756-CN2R is a ControlLogix communication module produced by Allen-Bradley(A-B,part of Rockwell Automation).The following is a detailed introduction to the module.

Main functions and uses

Establishing connections:The 1756-CN2R module is mainly used to establish connections in redundant control network topologies.

Communication protocol:The module may support the ControlNet communication protocol for communication in ControlLogix control systems.

Technical specifications

Network interface:It has two BNC control network ports for connecting to the ControlNet network.Use 1786-RG6 quad-shielded RG6 coaxial cable for connection.

Transmission rate:Supports transmission speeds up to 5 Mbps.

Backplane current:The backplane current consumption is 185mA(5V).

Voltage range:The operating voltage range is 85~265 VAC,and the output voltage is 120/240 VAC.

Signal delay:The maximum on signal delay is 1ms for resistive loads and the maximum off signal delay is 11ms for resistive loads.

Compatibility:Compatible with other modules in the ControlLogix series,can be installed in available slots of standard chassis,such as 1756-A4,1756-A7,etc.,and used with standard ControlLogix power supplies.

Working environment

Temperature:The suitable operating temperature range may include 32 degrees Celsius to 140 degrees Celsius(please refer to the official document for details).

Humidity:Work at 5%~95%non-condensing relative humidity.

Shock and vibration resistance:The working shock rate is 30G,and the maximum vibration is 2G at 10~500Hz.

Other features

Data acquisition and transmission:The 1756-CN2R module may be used to collect and transmit real-time data,such as control signals,sensor data,etc.

Real-time performance:Supports real-time data transmission to meet the real-time requirements of the control system.

Programmability:May support programmable functions,allowing users to customize settings as needed.

Data processing:Process data inside the communication module,such as data format conversion,processing logic,etc.

Data monitoring:Has monitoring functions for monitoring communication status,connection status,etc.