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Features of CAN protocol:
1. Fast communication rate;
2.CAN protocol adopts CRC test and can provide corresponding error handling function to ensure the reliability of data communication;
3. The multi-master competitive bus structure is adopted, and the sent information can be automatically retransmitted after it is damaged;
4.CAN bus protocol has been certified by the International Organization for Standardization, the technology is relatively mature, the control chip has been commercialized, cost-effective, especially suitable for data communication between distributed measurement and control systems;
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5. Only 2 cables are connected to the outside, and the error detection and management module is integrated inside;
6. Can transmit and receive data point-to-point, one-to-many and broadcast centralized;
7. You can receive or mask the packet based on the packet ID.