17 Alarmmanagement
All alarms shall be from the HelpOffNormalAlarmType defined in OPC 40083.
As defined in OPC 40083, the root node of the specific interface, e.g. an instance of DosingSystemType, sets the SubscribeToEvents flag in the EventNotifier attribute.
The client subscribes to events at this root node and receives the events already defined in this specification, such as temperature limit alarms or diagnostic events.
In the case of Component related messages, the SourceNode (included in BaseEventType) shall contain the NodeId of the related component. In case of medium or high severity, the production machine can sort out bad parts or stop production.