Add symbols to an existing calculation

You can add the data source from one or more symbols on a display to an existing calculation if the symbols use either PI AF attributes or PI tags as their data source.

Note: Selected symbols must be based on either PI tags or PI AF attributes, but not both.

1. Click the symbol (or symbols) on the display whose data source you want to add to a calculation.

2. Click Calculations .

3. Right-click the calculation that you want to modify and then click Add Selected Symbols to Calculation.

4. Make any additional modifications to the calculation as needed and then click Save.

   Note: If you drag an attribute into a calculation that does not have an asset context, the asset context is set to the element that contains the first attribute. If asset context is already set, an attribute at the current context level or below is converted to a relative path. Attributes at the same or higher hierarchy level are shown as paths relative to the root of the AF database.

   If the asset is moved or renamed, the asset context is updated when the calculation editor is opened. The updated calculation needs to be saved with the new name or path.