Returns the number of tacho counts in one rotation of the motor. Tacho counts
        are used by the position and speed attributes, so you can use this value
        to convert rotations or degrees to tacho counts. (rotation motors only)

def count_per_rot(self):
        """
        Returns the number of tacho counts in one rotation of the motor. Tacho counts
        are used by the position and speed attributes, so you can use this value
        to convert rotations or degrees to tacho counts. (rotation motors only)
        """
        (self._count_per_rot, value) = self.get_cached_attr_int(self._count_per_rot, 'count_per_rot')
        return value