code: def out_of_service(self, args):
          
          if not self._started:
              raise ApplicationNotStarted("BACnet stack not running - use startApp()")
  
          # with self.this_application._lock: if use lock...won't be able to call read...
          args = args.split()
          addr, obj_type, obj_inst = args[:3]
          try:
              self.write("{} {} {} outOfService True".format(addr, obj_type, obj_inst))
          except NoResponseFromController:
              pass
docs: Set the Out_Of_Service property so the Present_Value of an I/O may be written.
  
          :param args: String with <addr> <type> <inst> <prop> <value> [ <indx> ] [ <priority> ]