HistorianAccess Class
- Last UpdatedAug 21, 2026
- 1 minute read
Represents a historian connection proxy.
'Declaration
Public Class HistorianAccess 'Usage
Dim instance As HistorianAccesspublic class HistorianAccess public ref class HistorianAccess Before any historian-related operation can be performed, a historian connection proxy object of class HistorianAccess must be created first. The existence of this object does not imply that an actual physical connection is established with the Historian Server; for example, if the Historian Server computer is unavailable, but the managed HCAL application can still create and store streamed data locally in the provided store-and-forward folder.
System.Object
ArchestrA.HistorianAccess