Transmitting incremental angle or distance data from machine to controller

The data corresponding to relative time dependent angular or travel steps, including signals indicating direction of movement and reference position, is transmitted in pulse sequences (A,B) similar to the output of an incremental pulse shaft encoder. The data is converted and transmitted by wire to an evaluator. The pulse sequence is encoded with the pulse signals for the direction of movement and reference position and the encoded signal (CP) transmitted to the evaluator and decoded. The pulse of the particular angle or travel signal can be divided for coding into four sections, the first forming the start signal (Start bit), the second the direction signal, the third the reference signal and the fourth the stop signal (Stop bit).