2 Visual Components Manuals

Introduction to Visual Components 2.3
Tip:
Dynamic texts can be used if the text should be appropriately modified for output.
• 4.8.2.3.2 Blinking Element on the Screen
Foreground and background colors are changed to a desired blink frequency in order to output a
blinking element on the screen.
A field connected with this variable then blinks automatically with the selected colors.
If the element should only blink because of a special state (i.e. in the event of error), a separate color
variable is used and, depending on the status, set to the blink variable value or the "resting state" value.
• 4.8.2.3.3 Bar Graphs with Color Changes
Bars graphs with changing colors can also be used in the application. According to the limits, changing
colors can be implemented at runtime by modifying the color variable.
4.8.3 Controlling Fields with Status Variables
Status variables can be connected to all fields in Visual Components which enables visibility control, input
release, and synchronization with external variables.
4.8.3.1 Connection
The status variable is entered under the Parameter tab of the Properties dialog box. The following image shows
the Parameter tab for a numeric input field.
The connected status variable must be of data type UINT. The same variable can also be used for several fields
as long as the synchronize function is not used. If the synchronize function is used, then it makes sense to use
separate variables for each field, so that the processed (active) field can be more accurately determined.
4.8.3.2 Assignment
The status variable uses individual bits to control different field tasks. Depending on requirements, these bits
can be set and/or evaluated by the application. If the status variable is 0, or if no status variable is connected,
4.8.2.3 Application Possibilities 361