| 摘要 |
The invention relates to a method for serial data transmission in a bus system having at least two bus nodes, which exchange messages by means of the bus. The sent messages have a logical structure as per CAN standard ISO 11898-1. The logical structure comprises a start-of-frame bit, an arbitration field, a control field, a data field, a CRC field, an acknowledge field, and an end-of-frame sequence. The control field comprises a data length code, which contains information about the length of the data field. The method is characterized in that the control field of the messages comprises more than six bits, in deviation from CAN standard ISO 11898-1, if a first marker (EDL) is present, at least one additional bit (ESI) being added to the control field of the message if the first marker (EDL) is present, and information about the "error passive" state of the bus node being integrated into sent frames by means of the additional bit (ESI) or one of the additional bits. |
