CAN COMMUNICATION SYSTEM


  1. OUTLINE


    1. The Controller Area Network (CAN) is a serial data communication network for real time application. It is a multiplex communication network equipped in a vehicle, and has communication speeds of 500 kbps (HS-CAN) and 250 kbps (MS-CAN), and the ability to detect malfunctions.

    2. The HS-CAN consists of the V bus, bus sub bus 2, bus 3, bus 5 and local bus.

    3. The MS-CAN consists of the sub bus 1.

    4. The central gateway ECU (network gateway ECU) and main body ECU (multiplex network body ECU) are used as gateways to transmit data between the buses.

    5. The CAN has 2 terminating resistors which are necessary for accurate judgment of communication on the main bus.

    6. The communication wire used is a twisted-pair wire. The bus line has a high line (2.5 V to 3.5 V of voltage is applied) and a low line (1.5 V to 2.5 V of voltage is applied).