You add or edit the shunt variables connected to an alarm, to enable or disable the alarm.
In WorkStation, in the System Tree pane, select the alarm for the shunt variables you want to edit.
Click the Alarm Trigger tab.
Select Invert if you want to invert the shunt variable.
In the Shunt variable 1 box, enter a digital variable that is used as a shunt variable .
Select an AND or OR operator if you want to add a second shunt variable.
Select Invert to invert the second shunt variable.
In the Shunt variable 2 box, enter a digital variable that is used as a shunt variable .
Click the Save button