Allen Bradley 1756-CN2R is a ControlLogix communication module.Here is a detailed introduction to the module:

1.Basic attributes

Manufacturer:Rockwell Automation

Brand:Allen Bradley

Part number/catalog number:1756-CN2R

Allen Bradley 1756-CN2R

2.Functional features

Network topology:The 1756-CN2R module is mainly used to establish connections in redundant control network topologies and has two BNC control network ports.

Communication rate:Supports a transmission speed of up to 5Mbps.

Connectivity:In addition to the dual ControlNet ports,it is also equipped with a USB 1.1 port(but note that the USB port cannot be used for data communication purposes).It supports up to 128 Logix connections and 131 communication connections.

Scalability:Suitable for implementing distributed I/O topologies,can cover 1000 meters per segment,and can be easily expanded to control network segments of more than 1000 meters by using repeaters.

Compatibility:Can communicate with human-machine interface(HMI)devices and supervisory control and data acquisition(SCADA)systems.

III.Technical Specifications

Power and Power Consumption:Has 1300mA of current draw at 5.1V DC and 3mA of current draw at 24V DC;dissipates 6.6W(or 22.9 BTU/hour)of heat.

Isolation Voltage:Has an isolation voltage of 30V DC.

Insulation Test:Tests basic insulation at 500V for one minute.

Enclosure Type:Adopts an open enclosure and meets the T4 IEC temperature standard and the T4A North American temperature standard.

Operating Temperature Range:0 to 60 degrees Celsius(32 to 140 degrees Fahrenheit).

Humidity Range:Operates at non-condensing relative humidity of 5%to 95%.

Shock and Vibration:Has an operating shock rate of 30G and a maximum vibration of 2G at 10-500Hz.

Allen Bradley 1756-CN2R

4.Physical characteristics

Dimensions and weight:The specific dimensions may vary depending on the product,but generally the module will occupy a chassis slot and have a certain weight(such as 0.64 pounds or 0.293 kilograms).

Installation:It can be installed in any available slot of a standard chassis,such as 1756-A4,1756-A7,etc.,and used with a standard ControlLogix power supply.

5.Application scenarios

The 1756-CN2R module is suitable for industrial automation and control applications that require high performance,reliability,and redundant configuration.It can be used as a key component in the control system to provide stable and efficient communication and data transmission functions.

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