Function Picture switch - Extended trend

After creating a picture of the Picture type Extended trend the diagram is defined with the picture function Picture switch.

Configurable options are:

Name	Freely configurable diagram name. Can be shown in control element. If the string in the diagram name contains the character combination %c, this combination is replaced by the name of the batch(es) reaching into the defined filter during online operation e.g. Diagram name = "Diagram1_%C%_End" in the Runtime "Diagram1_Batch1_End"
Diagram Type	Type of source values
- Online data	Current online values and values stored as HDD.
- Archive data	Use of the archive values stored in the database.
Font	Selection or setting of the user defined font for the axis labels and the value indicators
Scroll width	Definition of the screen scrolling if the right edge of the diagram has been reached. (CAUTION: Only for diagrams with online values)
Refresh rate	Definition of the screen updating in seconds (min. 0.1)
Offset
`OK, Cancel, Help`	System functions (CAUTION: "OK" button only released after the configuring of at least one curve)
Process variables	Selection of the process variables allocated to the diagram. (Selection via process variable list) Only numerical variables can be selected. String variables are not offered in the dialog.
Edit curve	Editing the settings of the selected trend curve
Frame	Settings of the diagram parameters (Diagram background, frame limits, colour etc.)
Representation type	Selection of the type of representation.
- XT display over time	Representation of the curves over time. (x/t representation)
- XY display over value	Representation of the curves via another process variable (x/y representation)
Time axis	Laying down of the time axis definition (Time range absolute, relative, fixed, color, subdivisions).
X axis	Laying down of the X-axis definition (Process variable, color, subdivision etc.) (CAUTION: Button only released after process variable allocation)
Export	Exporting (*.drg) of the set diagram parameters (Process variables, frame, times etc.)
Import	Exporting (*.drg) of the set diagram parameters (Process variables, frame, times etc.)
From backup path	historic archives from the backup path
Trend curve list	Trend curve is opened together with the opening of the diagram
- active	in online operation. (Otherwise prepared for online selection)
- Y-axis	Y-axis of the trend curve is opened together with the opening of the diagram in online operation. (Otherwise prepared for online selection)

Each trend curve is provided with its own name. We recommend not to display too many trend curves at the same time so you can keep a good overview. You can configure several process variables and then activate them in online operation as you wish.

The selection of the process variables is done by pressing the button Variable.... The process variable list is opened.

You can also select variables from other projects and use them to display curves from other projects.

The process variables are accepted with a double click in the lower display field (selected variables). After pressing the OK button in the process variable list the Curve new button is released in the definition mask of the extended trend.

With the pressing of the button Variable or Archive a new trend curve is defined for the diagram. One of the process variables allocated to the diagram can be used.

With the representation of online values, the button is released after the marking of a process variable in the curve parameter window.

With the representation of archive values, in addition to the marking of the process variables, the archive must be given from which the values should be read out.