Method and apparatus for transmitting signals

The invention relates to a method for transmitting signals between a first control unit (2) and at least a second control unit (3), wherein the first control unit (2) based on input data to select at least a first signal to be transmitted, the first control device ( 2) at least one signal output (6), on which a first PWM signal (7) can be output, wherein each of selected at least one first signal a first PWN signal (7) is associated with encoding, wherein the second control unit (3) a having first signal input (8), wherein the first PWM signal (7) and to the second control unit (3) evaluates the received first PWM signal (7) and the first signal is determined, and performs subsequent control on the basis of the transmitted first signal. Also, the invention relates to a relative apparatus.