ArchestrA Namespace
- Last UpdatedAug 21, 2026
- 8 minute read
The namespace for the Historian SDK.
| Class | Description | |
|---|---|---|
![]() | AnalogSummaryQuery | Represents a query to retrieve analog summary data. |
![]() | AnalogSummaryQueryArgs | Represents a set of parameters for starting an analog summary data query. |
![]() | AnalogSummaryQueryResult | Represents one row of analog summary data query output. |
![]() | BaseQuery | |
![]() | BaseQueryArgs | Represents a set of parameters for starting a history data query. |
![]() | EventQuery | Represents an event query. |
![]() | EventQueryArgs | Represents a set of parameters for starting a history data query. |
![]() | EventQueryArgsBase | Represents a set of parameters for starting a history data query. |
![]() | HistorianAccess | Represents a historian connection proxy. |
![]() | HistorianAccessError | |
![]() | HistorianConnectionArgs | Represents a set of properties for Historian connection proxy configuration. |
![]() | HistorianConnectionStatus | Represents the status of the historian connection proxy. For a multi-historian connection, it includes the enumerable second-level status objects, one per partner historian, which can be examined separately if needed. |
![]() | HistorianConsole | Represents Historain console status and methods to stop, start, enable or disable it. |
![]() | HistorianDataValue | Represents a value, time, and quality (VTQ) triplet bound to some tag key, which can be stored by historian. |
![]() | HistorianDataValueDelete | |
![]() | HistorianDataValueList | Represents a collection of VTQs to be stored in historian. |
![]() | HistorianEvent | |
![]() | HistorianInfo | Represents Historain information, a set of properties retrieved from Historian including its version. |
![]() | HistorianSecurityInfo | Represents the security mode to be used when connecting to a historian. |
![]() | HistorianStoreForwardStatus | Represents the status of the store-and-forward subsystem. For a multi-historian configuration, it includes the enumerable second-level status objects, one per partner historian, which can be examined separately if needed. |
![]() | HistorianTag | |
![]() | HistorianTagList | Represents a collection of historian tag objects. |
![]() | HistorianTagRenameStatus | Represents the tag rename operation status used for determining if the operation was successfully completed. For a multi-historian configuration, it includes the enumerable second-level status objects, one per partner historian, which can be examined separately if needed. |
![]() | HistorianTagStatus | Represents the tag metadata synchronization status used for determining if the tag was successfully created on the historian server. For a multi-historian configuration, it includes the enumerable second-level status objects, one per partner historian, which can be examined separately if needed. |
![]() | HistorianTagStatusList | Represents a collection of tag status objects for multi-tag operations. |
![]() | HistorianVersion | |
![]() | HistorizationStatus | Represents the status of Historization |
![]() | HistoryQuery | Represents a query to retrieve history data. |
![]() | HistoryQueryArgs | Represents a set of parameters for starting a history data query. |
![]() | HistoryQueryResult | The HistoryQueryResult class holds information describing one history query result. |
![]() | MultiHistorianAccess | Represents a multi-historian connection proxy. |
![]() | StateSummaryQuery | Represents a query to retrieve state summary data. |
![]() | StateSummaryQueryArgs | Represents a set of parameters for starting a state summary data query. |
![]() | StateSummaryQueryResult | Represents one row of state summary data query output. |
![]() | TagExtendedProperty | Represents tag extended property info. This is a set of properties describing how the tag extended property is defined. |
![]() | TagExtendedPropertyGroup | Represents a collection of extended property collections associated with a tag. |
![]() | TagExtendedPropertyGroupList | |
![]() | TagExtendedPropertyGroupStatus | Represents the tag extended properties synchronization status used to determine whether the tag extended properties was successfully created on the historian server. For a multi-historian configuration, it includes the enumerable second-level status objects, one per partner historian, which can be examined separately, if needed. |
![]() | TagExtendedPropertyGroupStatusList | |
![]() | TagLocalizedProperty | Represents tag localized property info. This is a set of properties describing how the tag localized property is defined. |
![]() | TagLocalizedPropertyGroup | Represents a collection of Localized property collections associated with a tag. |
![]() | TagLocalizedPropertyGroupList | |
![]() | TagLocalizedPropertyGroupStatus | Represents the tag Localized properties synchronization status used to determine whether the tag Localized properties was successfully created on the historian server. For a multi-historian configuration, it includes the enumerable second-level status objects, one per partner historian, which can be examined separately, if needed. |
![]() | TagLocalizedPropertyGroupStatusList | |
![]() | TagQuery | Represents a query to retrieve tag list. |
![]() | TagQueryArgs | Represents a set of parameters for starting a tag data query. |
![]() | UniqueFileTime | Unique FileTime |
![]() | UniqueTime |
| Enumeration | Description | |
|---|---|---|
![]() | HistorianAccessError.ErrorTypeValue | |
![]() | HistorianAccessError.ErrorValue | |
![]() | HistorianAggregationType | Represents an aggregation type to be used during retrieval. |
![]() | HistorianAuthenticationProvider | Represents a historian Authetication Mode. |
![]() | HistorianComparisionType | Represents a comparison type for filtering. |
![]() | HistorianConnectionMode | Represents a historian connection Mode. |
![]() | HistorianConnectionType | Represents a historian connection type, either for process data or for event data. |
![]() | HistorianConsoleStatusType | Represents the Historian Console Status Type. |
![]() | HistorianDataCategory | Represents a historian data category. |
![]() | HistorianDataType | Represents a historian tag data type. |
![]() | HistorianDeadbandType | Represents a data storage deadband. |
![]() | HistorianEventOrder | Represents the order in which events are retrieved from history. |
![]() | HistorianEventPropertyType | Represents a property type for events. |
![]() | HistorianEventQueryType | Represents the order in which events are retrieved from history. |
![]() | HistorianEventStorageMode | Represents the Event Storage Mode. |
![]() | HistorianInterpolationType | Represents a retrieval interpolation type, how retrieval should determine the analog values to be returned at a given cycle boundary. |
![]() | HistorianMessageSeverity | Represents a level of severity for a message logged to the ArchestrA Logger. |
![]() | HistorianQualityRule | Represents the supported quality rules for retrieval. The results are timestamped according to the setting of the TimeStampRule system parameter in the historian. |
![]() | HistorianRetrievalMode | Represents a retrieval mode to be used. |
![]() | HistorianSecurityMode | Represents the security mode to be used to connect to a historian. |
![]() | HistorianSqlExecuteOption | Represents a SQL command execute option. |
![]() | HistorianStorageType | Represent a tag storage type. |
![]() | HistorianSummaryType | |
![]() | HistorianTagType | Represents a tag type. |
![]() | HistorianTimeIntervalType | Represents a retrieval historian time interval type. |
![]() | HistorianTimestampRule | Represents a timestamp rule, whether the retrieved data gets shown with the timestamp at the beginning of the retrieval cycle or the end of it. |
![]() | HistorianValueSelector | Represents a value selection rule, which field from analog summary points should be used to convert the analog summary records to simple VTQs. |
![]() | HistorianVersionType | Represents a data version to retrieve. |
![]() | TagExtendedPropertyDataType | Represents a tag extended property datatype. This determines how to interpret the property value. |
![]() | VersionedStatusEnum |

