Abstract: A method for transforming recorded communication data by means of a first program, wherein the communication data is given by messages from a network or bus communication, wherein the recorded communication is carried out on the basis of a first communication matrix, wherein the recorded communication data is provided to be sent by means of a test system to an ECU under test, wherein the test system is connected via a first communication link to the ECU under test, wherein the ECU under test is configured based on a second communication matrix.

Abstract: A computer-implemented method for simulating a restbus control unit network that includes at least two restbus control units connected through a bus system. The restbus control unit network is connected to at least one additional control unit through the bus system. The communication relationships of the restbus control units are described, program code for simulating the restbus control units is generated based on the communication relationships. The restbus control unit network is simulated on a simulation computer via an executable version of the program code. Simplified and flexible simulation of the restbus control unit network is made possible in that a single, joint restbus control unit model is generated for the restbus control units as program code for simulating the restbus control units.