You can protect or clear alarm data by selecting the 'Protect Alarm Data' of graphic object shortcut menu related to analog/digital.
This function displays the alarm event screen and alarm message etc, when analog/digital value is alarm condition, but it doesn't remain for the data at alarm data view such as <Figure 1>.
<Figure 1> Example of Alarm Data View screen
If you set 'Protect Alarm Event' and 'Protect Alarm Data' together, it doesn't display alarm event or alarm message and also doesn't save the alarm data.
Reference) You can set whether to display alarm message and entire alarm occur, at 'Config | Alarm'.
Relate items)
Shortcut menu of Graphic Object Related to Analog