Data Point Groups

  • By default the data point group MQTTPub is used by the MQTT Publisher to define the data, which should be published.
  • Using the config entry [mqttpub] mqttPubGroup a different data point group can be specified.
  • The MQTT Publisher creates a dpConnect() to all the DPEs of this group and publishes them if a DPE is updated.
  • The value format (Transformation) for the published data (string or JSON format) can be configured in the MQTT Publisher Default/Last Will configuration panel.
  • To publish all values during connection establishment to the broker set the option AutoIGQ in the MQTT Publisher advanced configuration panel.
  • The topic used for publishing is derived from the DPE name or the alias, where all '.' and ':' are replaced by the MQTT hierarchy separator '/'.

DPE Name to Topic Name

The DPE System1:mqpub-0.alert.controlFuse is published under the topic System1/mqpub-0/alert/controlFuse