Minimum required parts for MonitoredItems in the 'Embedded DataChange Subscription Server Facet'|OPC UA Standard|Forum|OPC Foundation

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Minimum required parts for MonitoredItems in the 'Embedded DataChange Subscription Server Facet'
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Martin Lang
Germany
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08/29/2016 - 07:48
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Hello,

based on the ConformanceUnit 'Monitor Value Change' we assume that a 'MicroEmbedded'-Server only must support MonitoredItems for 'Variables' in relation to the node attribute 'value'.
But during testing our ongoing server implementation a CTT test script requires more then the attribute 'value'.
The concerning CTT script is 'Monitored Item Services/Monitor Basics/001.js'. This script will create a MonitoredItem for the 'ServerObject' and the node attribute 'DisplayName'.

Summarized:
Must an 'Micro Embedded'-Server support more the NodeClass 'Variables' and the value 'attribute' for MonitoredItems?
Or must the server also support monitoring for each NodeClass and each node attribute?

Regards,

Martin

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08/30/2016 - 02:45
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The Conformance Unit requires support of "Attribute value changes". It means changes of the "value" of any Attribute of any Node Class (including Objects). It is not limited to the "Value Attribute" of Variables.

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