Circutor PowerStudio Series Instrukcja Użytkownika Pobierz pdf (Strona 107)

PowerStudio

User Manual 107

Likewise, you may specify a previously defined specific filter (see chapter 4 Variable

selection) using the control:

Once you have chosen the unit and the filter (where appropriate) the variables

selection window will be displayed allowing you to choose the variable to be entered in

the formula (see 4 Variable selection)

Finally, if we choose a device, the ‘Number of groups back’ option will be activated and

enable a control to be assigned the property of showing the data for a past period that

we select. For example, if we have chosen a period of 1 week in the report and we

select a group with value 1, this control will show the grouped data from 1 week before

the present period. These groups can also be personalised with virtuals, as in 5.1 Add,

modify and delete reports.

o Add a reference to an already defined formula: This option enables you to enter a

reference to another previously defined formula. This option is only available in reports

and SCADA screens. Selecting this option will display a window where a previously

defined formula can be selected:

o Add one of the functions provided: This option allows access to a list of typical

mathematical functions which can be entered into the formula being edited:

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Circutor PowerStudio Series Instrukcja Użytkownika Strona 107