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04/02/2020
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Hi,
is it required for parent nodes to have the SubscribeToEvents bit set if the child has it set? In the following example:
Server –> A –> B –> C
C shall be an EventSource, B an EventNotifier and Server is an EventNotifier anyways. From the example in the specification it is not completely clear to me whether A shall also be an EventNotifier or not or does this only depend on the used model?
Thanks,
Markus
05/30/2017
Online
Every target of HasNotifier shall be an EventNotifier.
https://reference.opcfoundatio…..art3/7.18/
The SourceNode of this ReferenceType shall be Objects or Views that are a source of event subscriptions. The TargetNode of this ReferenceType shall be Objects that are a source of event subscriptions. A source of event subscriptions is an Object that has its “SubscribeToEvents” bit set within the EventNotifier Attribute.
04/02/2020
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Yes, I think I understand this but I will try to be more specific.
/—- HC —-\/—- HC —-\/—- HC —-\
Server –> A –> B –> C
\———— HN ————/\—- HN —-/
HC: HasComponent
HN: HasNotifier
Is this allowed or do I need a HasNotifier reference to A as well?
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