Overview
The Historian Namespace exposes properties and methods from the .NET objects used by the Historian Module execution. You can use these properties and methods on your Displays or to create Scripts and Alarms.
Runtime Attributes
HistorianTable Runtime Attributes
Like all objects in the Platform HistorianTables have their set or properties and Methods.
Particularly, there a method that is frequently used by application, which is to retrieve the historian contents, generating a DataTable with the results.
Those Methods are mainly on the Tag namespace and HistorianTabe namespaces.
TK.GetTagHistorian
TK.GetTagsHistorian
TK.GetValueFromHistorian
@Historian.Table.Table1.SaveToTextFile
@Historian.Table.Table1.GetObjectList
Below is a table describing the most used properties from the Historian Namespace. Access the Historian Namespace page for a complete list of available options.
Property | Type | Description | Property path on CodeBehind |
|---|---|---|---|
| Boolean | Indicates the operational status Module Historian has started. When true, the Module Historian actively archives data. When false, no data archiving occurs. |
|
| String | Indicates the success or failure when initiating the Module Historian. If the Module Historian starts successfully, the system returns an OK string. The system provides a descriptive error message in case of failure during the initiation process to help you diagnose and troubleshoot the issue. |
|
| Boolean | A Boolean flag that enables the creation of temporary binary files on the server to optimize the TrendChat object performance when handling large datasets. Setting to true improves responsiveness and efficiency. |
|
To learn about the basic concepts of namespaces and objects, you can refer to Objects and Namespaces.
In this section: