CAN, an abbreviation for Controller Area Network, is an ISO-certified international standard for a serial multiplex communication protocol*1. A communication circuit employing the CAN protocol connects each ECU, and sensor data can be shared among, which enables more reduction in wiring.

CAN offers the following advantages.

  • *1: The regulations have been decided in detail, from software matters such as the necessary transmission rate for communication, the system, data format, and communication timing control method to hardware matters such as the harness type and length and the resistance values.
  • *2: bps=bit per second