Table 49 defines the structure of the HistoryModifiedData used for the data to return in a HistoryRead when IsReadModified = True. This DataType is a subtype of HistoryData.
Table 49 – HistoryModifiedData structure
|
Name |
Type |
Description |
|
HistoryModifiedData |
Structure |
This structured datatype is a subtype of HistoryData (see 6.6.2) |
|
modificationInfos[] |
ModificationInfo |
|
|
modificationTime |
UtcTime |
The time the modification was made. Support for this field is optional. A null shall be returned if it is not defined. |
|
updateType |
HistoryUpdateType |
The modification type for the item. |
|
userName |
String |
The name of the user that made the modification. Support for this field is optional. A null shall be returned if it is not defined. |
Its representation in the AddressSpace is defined in Table 50
Table 50 – HistoryModifiedData definition
|
Attribute |
Value |
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|
BrowseName |
HistoryModifiedData |
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|
IsAbstract |
False |
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|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Other |
|
|
Subtype of the HistoryData defined in OPC 10000-3 |
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|
Conformance Units |
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|
Historical Access Annotations |
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