The Characteristics of CAN Bus
1. International standard industrial field bus with reliable transmission and high real-time performance.
2. The transmission distance can reach 10Km, and the transmission rate can reach up to 1MHz bps:
3. A single bus can connect up to 110 nodes, and it is very convenient to expand the number of nodes.
4. Multi-master structure, the status of each node is equal, the regional network is convenient to set up, and the utilization rate of the bus is also very high;
5. High real-time performance, lossless bus arbitration technology, no delay for high-priority nodes;
6. The faulty CAN node will automatically shut down and cut off the connection with the bus, without affecting the communication of the data bus;
7. The message is used for short frame structure and hardware CRC verification, the interference probability is small, and the data error rate is very low:
8. Automatically detect whether the message is sent successfully, the hardware can automatically retransmit, and the transmission reliability is extremely high;
9. The function of the hardware message filtering system, which only receives necessary data information, reduces the burden on the CPU, and simplifies the design and compilation of management software;
10. Communication can be used in ordinary twisted pair, coaxial cable and optical fiber.
11. CAN bus system structure is relatively simple, and cost-effective.
