code: def set_speed(self, value):
          ''' set total axes movement speed in mm/second'''
          self._combined_speed = float(value)
          speed_per_min = int(self._combined_speed * SEC_PER_MIN)
          command = GCODES['SET_SPEED'] + str(speed_per_min)
          log.debug("set_speed: {}".format(command))
          self._send_command(commandf set_speed(self, value):
          ''' set total axes movement speed in mm/second'''
          self._combined_speed = float(value)
          speed_per_min = int(self._combined_speed * SEC_PER_MIN)
          command = GCODES['SET_SPEED'] + str(speed_per_min)
          log.debug("set_speed: {}".format(command))
          self._send_command(command)
docs: set total axes movement speed in mm/second