Abstract: A method for the control of the switching operation of a valve by the fact that the two end positions and the intermediate position(s) of the valve are clearly determined each by the valve rod(s) bearing directly or indirectly on fixed position limiters, the fixed position limiters each are moved to in the course of the first switching operations of the valve, and the respective fixed position messages resulting therefrom are stored.

Abstract: The invention relates to a method for controlling the switching movement of a valve, by means of which the device carries out the above in a simpler fashion than with conventional devices, manipulation advantages are achieved and the recognition of defined, fixed valve positions is more certain. The above is achieved in a method whereby both end positions and the intermediate position(s) of the valve are clearly fixed by indirect or direct arrangement or the valve rod(s) at fixed positions (A1, A2, A3, A4), whereby, during the first switching movement of the valve, the fixed positions (A1, A2 . . . ) are each arrived at and the resulting fixed positional signal (y1, y2, y3, y4) is stored, a given tolerance range (&Dgr;T1i; &Dgr;T2i; &Dgr;t3i; &Dgr;T4i) is assigned to each value (y1, y2 . . . ) and both threshold values (y1o, y1u; y2o, y2u; y3o, y3u; y4o, y4u) for the given tolerance range (&Dgr;T1i, &Dgr;T2i, . . . ) are calculated.