Sparkplug Primary Host Application

Associated with: Sparkplug Publisher Broker items

This status attribute indicates the status of the connection of the Primary Host Application to the MQTT Broker. When the Primary Host Application has established a connection with the MQTT Broker, the status attribute indicates that the Primary Host Application is online. It also displays the date and time that the online state last changed. The Sparkplug Publisher exports its data to the Primary Host Application only when it is online.

If the Primary Host Application has never been online, the status attribute displays the value:

Never online since system start-up.

Also see Primary Host Application State Alarm.