Alarms and events
The event handling in ProviewR displays alarms, information messages and events in two lists,
the alarm list and the event list. The alarm list contains active or unacknowledged alarms and
info messages, and supplies operators and maintainers with information about the current state
of the process. The event list contains events, for example when an alarm is activated,
and gives a picture of what has happened in the system.
Alarms and events are generated by supervision objects. The most common are DSup and ASup
objects that supervises digital and analog signals. The supervision objects are scanned by the
event monitor that sends messages about alarms and events to different outunits, eg the
alarm and event list Xtt.
Alarms
Info messages
Events
Supervision objects
Event monitor
Alarm blocking
Alarm suppression
Outunits