A data acquisition device module is publishing raw results to the internal broker, which are processed then to calibrated results. Each sensor gateway of a DA device publishes its raw result, which contains one or more keys. From one or more values behind those keys a calibrated result can be derived. Each DA device module is configured according to the XML schema definition (XSD). Part of this definition is the publish_strategy for the sensor gateway.
| publish_strategy | description |
|---|---|
| always | All raw result entries of the sensor gateway will be always processed to calibrated results (if a sensor for that is configured). |
| on_change | A raw result entry will be processed to a calibrated result only, if there is a change to the previous result. |
The default publish strategy (if not explicitly defined in the configuration) is on_change.