Removing Measurements
To remove measurements, select Remove Measurements... from Edit menu in SCADA Trend Graph tool. The Remove Measurements dialog box will open.
Using Remove Measurements Dialog Box
Remove Measurements Dialog Box Fields
The Measurements table display the list of analog measurements that are currently displayed in the SCADA Trend Graph tool. The table contains two columns: the unnamed column that contains check‑boxes used to select measurements and the Name column that contains measurement names.
Buttons
The OK button removes trend lines for the selected measurements to the graph and closes the Remove Measurements window.
The Help button opens the online help for this topic.
The Cancel button closes the Remove Measurements window without changing the graph.
Adding Calculated Measurements
To add calculated measurements, select Calculate Measurements... from the SCADA Trend Graph tool Edit menu. The Calculate Measurements dialog box will open.
Using Calculate Measurements Dialog Box
Calculate Measurements Dialog Box Fields
The Calculate Point field allows you to enter a name for the calculated point, which will be displayed in the graph legend.
The Measurements table displays a list of the analog measurements that are currently displayed in the SCADA Trend Graph tool. The table contains two columns: the first (unnamed) column contains checkboxes that you can use to select measurements, and the Name column contains measurement names.
The Calculation Type drop‑down list contains the calculation types that can be applied to the measurements selected from the Measurements table. The following calculation types are supported: MIN, MAX, SUM, AVG, DIF.
If the DIF calculation type is selected, the dialog box will update to display two additional fields: First Measurement and Second Measurement. These fields allow you to select measurements from the Measurements table to use in the calculation where the Second Measurement (M2) value is subtracted from the First Measurement (M1) value.
DIF = M1 - M2
DIF Value Selection Options
If you select two rows in the Measurements table, and then select DIF from the Calculation Type drop-down list, the system will distribute your selections to the First Measurement and Second Measurement fields in the order selected.
Alternatively, you can select DIF from the Calculation Type drop-down list before making any measurement selections, and then populate each field. The first selection of a Measurements table row will always populate the First Measurement field; the next selection will populate the Second Measurement field.
Selecting additional measurements will display a message stating that only two measurements can be used in the difference calculation.
Buttons
The OK button adds trend lines for the selected calculation to the graph and closes the Calculate Measurements dialog box.
The Help button opens the online help for this topic.
The Cancel button closes the Calculate Measurements dialog box without changing the graph.
Hiding Measurements
To hide measurements, select Hide Measurements... from the Edit menu in SCADA Trend Graph tool. The Hide Measurements dialog box will open.
Using Hide Measurements Dialog Box
Hide Measurements Dialog Box Fields
The Measurements table display the list of measurements that are currently displayed in the SCADA Trend Graph tool. The table contains two columns: an unnamed column that contains check-boxes used to select measurements and the Name column that contains measurement names.
Buttons
The OK button hides trend lines for the selected measurements to the graph and closes the Hide Measurements window.
The Help button opens the online help for this topic.
The Cancel button closes the Hide Measurements window without changing the graph.