Page navigation functions allow an Operator Action, written as an IEC 61131-3 script, to:
These page navigation functions are supported:
| Function | Returns | Description |
|---|---|---|
| CurrentPageDescription | STRING | Returns a description of the current page. |
| NavigateBack | Navigates back to the previous display window. | |
| NavigateBackDescription | STRING | Returns the description of the page opened by NavigateBack(). |
| NavigateBackIsAvailable | BOOL | Returns TRUE if the function NavigateBack() is available. |
| NavigateForwards | Navigates forwards to the next display window. | |
| NavigateForwardsDescription | STRING | Returns the description of the page opened by NavigateForwards(). |
| NavigateForwardsIsAvailable | BOOL | Returns TRUE if the function NavigateForwards() is available. |
| NavigateHome | Navigates to the home page window. | |
| NavigateHomeDescription | STRING | Returns the description of the page opened by NavigateHome(). |
| NewAlarmsAvailable | BOOL | Returns whether new alarms are available. |
| OpenAlarmList | Opens an alarm list for a folder or tag. | |
| OpenGraphic | Displays a graphic page. | |
| OpenFile | Displays an external file using the default application for the file type. | |
| OpenSqlList | Executes a query and displays the results as a table. | |
| OpenTagFile | Displays a tag file. | |
| OpenTrend | Displays a preconfigured trend. | |
| OpenTrendForTag | Displays temporary trend plot for a Data Point Tag. |
A function that returns a value can be called from an Expression.
These functions can be called from a Structured Text Function Call.
To learn where you can use these functions.
For the meaning of terms used in Fernhill SCADA.