Panel for Trend View

The View button opens the main trend display panel for a selected trend display group with an associated configuration.

The main panel can display up to 16 curves and features the following buttons:

Save

The current trend display is saved. In the opened dialog, you can select whether the current trend display should be overwritten, or the trend display should be saved under a new name. Overwriting the trend display is only possible if the current user has also created this trend configuration or the user has root rights.

Reload trend

Reload the trend display. All unsaved changes will be discarded.

Settings

A separate window is opened in which all settings for the current trend view can be changed. The operation is identical to the configuration panel, but here only the current trend view can be configured.

Datapoint selector

Enables/disables a datapoint selector next to the trend widget. With this datapoint selector, a datapoint element can be added via drag and drop as new curve to the current trend display.

You can also use a CNS name. In this case the CNS name is shown unless the datapoint element linked to a CNS node does not have a description.

Figure 2. Panel VarTrendView with datapoint selector

Legend

As an option, the trend display is shown with or without the legend. For information on how to use the trend, see the chapter Trend functionality.

Toolbar

As an option, the trend display is shown with or without the toolbar. For information on how to use the trend, see the chapter Trend functionality.

Print

Prints the current trend display (without legend and function bar).

In the Global Settings you can select which display elements of the panel should also be visible on the printout. Furthermore, it is possible to define standard colors for the printout.

Export to CSV

You can export data from the 1:1 representation of the curve (not zoomed!) to a CSV file (the file is created in wincc_oa_path/data). You can import and edit CSV files in Excel, for example.

CAUTION: Data of a comparison trend cannot be exported!

Note also that you must define an archive config for the datapoint that is shown in the trend. The archive config must be defined in order to export the data.

Note: If an error occurs when the data for the trend is queried, an error message is shown (e.g. the period contains too much data).

Note: The data of the displayed curves must be archived, only the value changes of the current time range are exported.

Screenshot

Creates a screenshot of the current trend display. If standard colors are defined for the printout, these are also used for the screenshot.

Time range

Enabled/disables a time range selector next to the trend widget. The time range can be changed during runtime.

CAUTION: The time range selection not possible via touch operation/mobile UI.

Figure 5. Panel VarTrendView with time range selection

In addition, it is possible to scroll the time range via the buttons. Here you can choose between the currently visible time window or a predefined time window.

Figure 6. Panel VarTrendView: Fast forward time range

Close

Closes the variable trend.

Public Functions


Function name
setTrendByName()
setTrendByObject ()
getTrendConfig ()

Dollar Parameters

Three dollar parameters are available in the panel:


Dollar Parameter	Description
$_STRING_TrendName	Name of the trend configuration which should be shown.
$_INT_TrendType	Trend type of trend configuration.
$_BOOL_HideControls	Select if all elements from panel should be hidden.