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6.6.38 A & E Wrapper Facet ToC Previous Next

Table 60 describes the details of the A & E Wrapper Facet. This Facet specifies the requirements for a UA Server that wraps an OPC Alarm & Event (AE) Server (COM). This Profile identifies the sub-set of the UA Alarm & Condition model which is provided by the COM OPC AE specification. It is intended to provide guidance to developers who are creating servers that front end existing applications. It is important to note that some OPC A&E COM Servers may not support all of the functionality provided by an OPC UA A&C server, in these cases similar functionality maybe available via some non-OPC interface. For example if an A&E COM server does not support sending Alarm Acknowledgement messages to the system that it is obtaining alarm information from, this functionality may be available via some out of scope features in the underlying Alarm system. Another possibility is that the underlying system does not require acknowledgements or automatically acknowledges the alarm.

Table 60 – A & E Wrapper Facet

Group Conformance Unit / Profile Title Optional
Address Space Model Address Space Events False
Address Space Model Address Space Notifier Hierarchy False
Address Space Model Address Space Source Hierarchy False
Alarms   and Conditions A & C Acknowledge False
Alarms   and Conditions A & C Alarm False
Alarms   and Conditions A & C Basic False
Alarms   and Conditions A & C ConditionClasses False
Alarms   and Conditions A & C Refresh False
Alarms   and Conditions A & E Wrapper Mapping False
Monitored Item Services Monitor Basic False
Monitored Item Services Monitor Complex Event Filter False
Monitored Item Services Monitor Events False
Monitored Item Services Monitor Items 2 False
Monitored Item Services Monitor QueueSize_ServerMax False
Subscription   Services Subscription   Basic False
Subscription   Services Subscription   Minimum 1 False
Subscription   Services Subscription   Publish Discard Policy False
Subscription   Services Subscription   Publish Min 02 False

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