6.6.3 HistoryModifiedData type
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.
| 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
| Attribute | Value | |||||
| BrowseName | HistoryModifiedData | |||||
| IsAbstract | False | |||||
| References | NodeClass | BrowseName | DataType | TypeDefinition | Other | |
|---|---|---|---|---|---|---|
| Subtype of the HistoryData defined in OPC 10000-3 | ||||||
| Conformance Units | ||||||
|---|---|---|---|---|---|---|
| Historical Access Modified Values | ||||||
| Historical Access Annotations |