Definition
CANopen is a communication protocol built on the CAN bus, standardizing how industrial controllers, drives, and I/O devices exchange data over a shared network: widely used in machine-level automation, particularly in Europe, for applications needing reliable, deterministic communication among relatively simple devices without the higher bandwidth of Ethernet-based protocols.
Key facts
- Built on the CAN bus physical layer, a robust, well-established automotive-and-industrial communication technology.
- Common in machine-level automation for networking controllers, drives, and I/O devices with moderate data-rate needs.
- Distinct from Ethernet-based industrial protocols (PROFINET, EtherNet/IP, EtherCAT), which offer higher bandwidth for more data-intensive applications.
- Standardized device profiles allow different manufacturers' CANopen-compliant devices to interoperate on the same network.
How does CANopen work in maintenance?
CANopen standardizes the messages and network behavior that let multiple industrial devices (controllers, drives, sensors, I/O modules) communicate reliably over a shared CAN bus, using standardized device profiles so equipment from different manufacturers can interoperate on the same network.
What does CANopen require?
CANopen operates over the CAN bus, offering robust, deterministic communication suited to machine-level automation with moderate data needs. Ethernet-based protocols like PROFINET, EtherNet/IP, and EtherCAT offer significantly higher bandwidth, better suited to data-intensive applications or larger networks, but require different underlying network infrastructure.
FAQ
Frequently asked questions
What communication task does CANopen perform?
CANopen networks industrial controllers, drives, and I/O devices over a CAN bus, standardizing how they exchange data reliably, commonly used in machine-level automation.
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