2 Visual Components Manuals

4.6.3.1.3 Data Point
Variable whose value determines the size of the bar. As long as the bar does not use scaling, the variable value
specifies the exact length of the bar in pixels. A variable of type USINT or UINT can be used. Negative values
are not supported, but another bar graph can be used which has the output directior reversed.
The variable can be directly entered under Source or selected by clicking the Assign... button.
4.6.3.1.4 Status
Allows a status variable to be connection which can influence the output field during runtime (see also
Controlling Fields with Status Variables).
4.6.3.1.5 Preview
Shows how the output field is displayed with the current settings. By clicking OK, the dialog box is closed and
the settings are applied to the output field.
4.6.3.1.6 Color
The colors set in the global options can be used for the bar when the Use Global option is selected.
If this option is not selected, bar graph colors can be chosen from a color palette using the Foreground and
Background settings. Background refers to the empty space shown in the bar graph if the bar is less than 100%
full.
A UINT process variable can be connected in the Colors Variable field to change colors during runtime (see also
Changing Colors Using Variables).
4.6.3.1.7 Scaling
Introduction to Visual Components 2.3
By default, the bar graph is controlled by the process variable using one pixel increments. In other words, if the
variable has the value 17, the bar will have a length of 17 pixels.
If this default does not suffice, then a different conversion can be defined (control variable to bar length) under
the Scaling tab.
330 4.6.3.1 Bar Graph Output