Network for machines and installations

A standard-compliant multi-master bus which ensures reliable deterministic access to real-time data in control system devices.

Discover CANopen

Empowering control system architectures

CANopen is a standard-compliant multi-master bus designed for machines and installations, offering reliable deterministic access to real-time data in control system devices. It conforms to the ISO 11898 international standard and is supported by more than 400 companies worldwide. We have chosen CANopen for its functional capabilities and advantages for automation, making it an increasingly popular choice in control system architectures.

Benefits of CANopen

Performance

• Efficient real-time data transmission.

• Low communication overhead.

• Scalable for diverse applications.

Reliability

• Robust error detection and handling.

• High noise immunity.

• Stable communication in complex systems.

Facts about CANopen

• Standard Compliance: Conforms to ISO 11898 international standard, offering open access and interoperability.

• Device Integration: Specially designed for integration into control systems, providing openness and interoperability for various devices such as drives, motor starters, and smart sensors.

• Performance and Reliability: Provides reliable deterministic access to real-time data, with a variable data rate between 10 Kbps and 1 Mbps.

• Flexible Connectivity: Supports up to 127 devices connected by simple tap junctions, with the option for flexible drop cable architectures.

Application area

• Machine automation: In machine automation systems, the CANopen protocol is used to achieve communication and control of devices such as drivers and sensors.

• Process control: In process control systems, the CANopen protocol can be used to achieve communication between field devices and control systems.

• Energy management: In energy management systems, the CANopen protocol can be used to achieve communication and data collection for devices such as smart meters and energy monitoring equipment.

Configuration and usage

• Hardware connection: Connect CANopen devices to the control system or other CANopen devices through the CAN bus.

• Parameter setting: Set the communication parameters of CANopen devices through configuration software, such as baud rate, node address, etc.

• Device configuration: Configure CANopen devices in the control system and establish communication relationships between devices.

• Programming: Write control programs to achieve control and data acquisition of CANopen devices.

Common Problems and Solutions

• Communication failure: Check cable connections, power supply voltage, baud rate settings, etc. to ensure that communication parameters are correct and error free.

• Device recognition issue: Check the node address settings to ensure that each CANopen device has a unique node address.

• Data Exception: Check the status of sensors and actuators to ensure the accuracy of data collection and transmission.

Corresponding solutions can be taken to address the above issues, such as replacing cables, adjusting power supply voltage, and reconfiguring communication parameters.

Summarize

Schneider CANopen, as an important communication protocol in the field of industrial automation, has the characteristics of flexibility, reliability, real-time performance, and standardization. Through reasonable configuration and use, efficient communication and data collection between on-site equipment and control systems can be achieved, providing strong support for the stable operation of industrial automation systems.