code: def init_process(self):
          
  
          for item in Device.objects.filter(protocol__daq_daemon=1, active=1, id__in=self.device_ids):
              try:
                  tmp_device = item.get_device_instance()
                  if tmp_device is not None:
                      self.devices[item.pk] = tmp_device
                      self.dt_set = min(self.dt_set, item.polling_interval)
                      self.dt_query_data = min(self.dt_query_data, item.polling_interval)
              except:
                  var = traceback.format_exc()
                  logger.error("exception while initialisation of DAQ Process for Device %d %s %s" % (
                      item.pk, linesep, var))
  
          return True
docs: init a standard daq process for multiple devices