Table 41 defines the structure of the Annotation used for the data to return in a HistoryRead.
This DataType describes Annotation structure information for the history data items. Its elements are defined in Table 49.
Table 49 – Annotation Structure
|
Name |
Type |
Description |
|
Annotation |
Structure |
|
|
message |
String |
Annotation message or text. |
|
userName |
String |
The user that added the Annotation, as supplied by the underlying system. |
|
annotationTime |
UtcTime |
The time the Annotation was added. This will probably be different than the SourceTimestamp. |
Its representation in the AddressSpace is defined in Table 50.
Table 50 –Annotation definition
|
Attribute |
Value |
|||||
|
BrowseName |
Annotation |
|||||
|
IsAbstract |
False |
|||||
|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Other |
|
|
Subtype of the Structure defined in OPC 10000-3 |
||||||
|
Conformance Units |
||||||
|
Historical Access Annotations |
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