FIELD: information technology.
SUBSTANCE: present group of inventions relates to data transmission and can be used for serial data transmission of in a bus system having at least two data processing units that are bus requesters and exchange messages via the bus, sent message having a logical structure in accordance with CAN standard ISO 11898-1. If the event of the first switching condition, the data field of the messages can comprise, in a deviation from CAN standard ISO 11898-1, more than eight bytes, wherein the values of the data length code are interpreted at least partly in a manner deviating from the standard to determine the size of the data field in the event of the first switching condition. For the forwarding of data between the field data and the application software, at least one buffer memory is provided, and, if the size of the data field differs from the size of the buffer memory used, the forwarded quantity of data is adapted at least corresponding to the difference in size between the data field and the buffer memory used.
EFFECT: to increase the volume and rate data transmission.
28 cl, 9 dwg
