# About the Memory data source

A tag with Memory as its data source is not associated with a programmable controller.

The value for a tag with Memory as its data source comes from the value table of an HMI server. The Initial Value setting defines its startup value. From then on its value can be changed with a macro or by input from a graphic display.

To retain the most recent value when the application is shut down and restarted, check Retentive. If you do not check this box, the Initial Value is used when the application is restarted.

## Option

- Initial Value

  This value will appear in the value table until the memory tag is changed. If you leave this box blank, a default value is provided by the application.

  For an analog or digital tag, enter a number.

  For a string tag, enter the text.

## See also

Create HMI tags

About data sources

About the Device data source

data source

Value table