2 Visual Components Manuals

Specifying the field length in characters is not necessary since the format determines the length of the field.
4.6.3 Displaying Analog Values
This section describes ways of implementing graphic and analog output using Visual Components. Analog
representations do not describe process variables with numbers. Instead, a graphic is used which changes with
respect to the process variable. This works just like an analog measuring instrument or a progress indicator
which is displayed when installing software.
Visual Components uses bars graphs which can extend in all four directions to represent analog information for
process variables.
Note:
Please click on the following button to start a demo:
More analog outputs can be created by the user with the help of the Visual Components programming interface
(see also VISAPI Functions Overview).
4.6.3.1 Bar Graph Output
A bar graph can be selected using the output field shortcut menu in the picture editor.
After selecting Output Bar Graph and placing it in the picture, a half−filled bar graph with borders is shown in the
editor. In this way, the source of the bar graph can be better checked during the design phase. Bar graph
borders are drawn only during the design phase, not at runtime. If this is necessary, then a static rectangle can
be used (see also Rectangles and Squares).
The 'Object Properties' dialog box is opened by double−clicking on the bar graph.
Introduction to Visual Components 2.3
328 4.6.3 Displaying Analog Values