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Below you find 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

IsStarted

Boolean

This is a Boolean flag that indicates whether the

Indicates the operational status Module Historian has started.

If the flag is set to "

When true,

" it means that

the Module Historian

is up and running,

actively

archiving data according to the configured Historian Tables. If the flag is set to "false," the Module Historian has not yet started, and no data archiving is taking place

archives data. When false, no data archiving occurs.

Historian.IsStarted

OpenStatusMessage

String

This is a string that displays a message indicating

Indicates the success or failure when initiating the Module Historian. If the Module Historian starts successfully, the

message will typically show "OK" or a similar confirmation. If there is an error

system returns an OK string. The system provides a descriptive error message in case of failure during the initiation process

, the message will display an error description

to help you diagnose and troubleshoot the issue.

Historian.OpenStatusMessage

EnableCache

Boolean

This is a

A Boolean flag that

, when enabled, allows

enables the creation of temporary binary files on the server

computer

to optimize the TrendChat object performance

of the TrendChart object

when

requesting

handling large

amounts of data. With caching enabled, the system can quickly retrieve the necessary data for the TrendChart object without causing significant delays or performance issues. By setting this flag to "true," users can benefit from improved performance and responsiveness when working with large datasets in the TrendChart object

datasets. Setting to true improves responsiveness and efficiency.

Historian.EnableCache

To learn about the basic concepts of namespaces and objects, you can refer to Objects and Namespaces.

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