FIELD: radio engineering and communications.
SUBSTANCE: invention relates to communication technologies. 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) is 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 is being integrated into sent messages by means of the additional bit (ESI) or one of the additional bits.
EFFECT: higher reliability and speed of data transfer.
21 cl, 5 dwg
