Abstract: In a method for transmitting data from a transmitting user of a cycle-based communication system to a receiving user of the communication system, the data are transmitted via a communication medium in messages that repeat in communication cycles and that respectively include a plurality of data blocks. The receiving user identifies the end of the data blocks in the received messages and subsequently extracts the transmitted data from the identified data blocks.

Abstract: A method for connecting a FlexRay user having a microcontroller, which includes at least one serial interface, to a FlexRay communications link via a FlexRay communications control device having at least one serial hardware interface, the connection between the user and the communications control device being implemented via serial interfaces. To make it possible to connect the user to the communications controller via a serial interface without restricting its functionality, it is provided that at least one serial interface is emulated in the user, or that at least one additional serial interface is developed in the FlexRay communications control device.