The invention includes a support frame for producing a dental workpiece. Stator segments, on which coils are placed, making up the poles of the motor, are compensated and are neutral from the point of view of forces FFe. of said service execution computer, etc. To optimize performance, the DPSK modulated signals may also be bit-interleaved when combined with orthogonal polarization. A transmission system and receiving apparatus for synchronously transmitting asynchronous data are also disclosed by the present invention.