Abstract: The disclosure relates to an actuating drive having a position transmitter for control of an actuating element with a position in a process installation. The position transmitter is equipped with a rotary measurement system whose pivoting range is mechanically limited, with the rotary measurement system having a shaft which is connected to a pick-up lever in an interlocking and unconfusable manner, which pick-up lever is articulated by means of the actuating drive or the actuating element. The shaft and the rotary measurement system are connected to one another via a slipping clutch. Markings are arranged isoazimuthally with respect to the rotation axis of the shaft, on the shaft circumference, and include angle information about the angle of the marking position with respect to the pick-up lever. The digital position transmitter has a sensor system for identification and evaluation of the markings. The slipping clutch has hysteresis.