METHOD FOR OPERATING A POSITION MEASURING DEVICE

摘要

Disclosed is a method for operating a position measuring device having an associated evaluation unit for further processing of position data. The signal propagation time between the position measuring device and the evaluation unit is determined prior to the measuring operation by requesting the transmission of data from the position measuring device to the evaluation unit via a data line. A counter is started at a defined start point in the evaluation unit, said counter counting at a given counter frequency. The actual counter state is detected as soon as the incoming data is detected in the evaluation unit. The signal propagation time is detected on the basis of the detected counter state. Preferably, the signal propagation time is detected in this way on several occasions and an average signal propagation time is determined from the individual signal times for further processing.