HistorianStorageType Enumeration
- Last UpdatedAug 21, 2026
- 1 minute read
Represent a tag storage type.
'Declaration
Public Enum HistorianStorageType
Inherits System.Enum'Usage
Dim instance As HistorianStorageTypepublic enum HistorianStorageType : System.Enum public enum class HistorianStorageType : public System.Enum | Member | Description |
|---|---|
| Cyclic | Data is stored in cyclic mode. Cyclic storage is the storing of analog data based on a time interval. Cyclic storage writes a record to history at the specified interval, only if a data change occurred during this time interval. |
| Delta | Data is stored in delta mode. Delta storage is the storing of data based on a change in a value. Delta storage writes a record to history only if the value has changed since the last value. |
| Forced | All data values received from the data source are stored. Forced storage is the storage of each value as it comes in from the plant floor or from a client application, with no filtering applied (that is, no delta or cyclic storage mode is used). |
| NotStored | Data is not stored. |
System.Object
System.ValueType
System.Enum
ArchestrA.HistorianStorageType