Rockwell-automation 5370-CUPK Color CVIM USER-PAK Option Manual de usuario descargar pdf (Pagina 135)

Chapter 8

Defining Strings for Serial Ports and Viewports

8 – 46

Example 7 – Using Formulas and Plot Line Codes

Recall that it is possible to draw or plot lines, and/or position strings through

the use of draw line or plot line codes, and that it is possible to use the results

of formulas as draw/plot line parameters. The Tool viewport string in our

example display provides a case in which tool results are used to plot lines

and position strings within the display.

Figure 8.20 Example of custom runtime displays (viewports)

Tool Viewport String

This Tool viewport locates and points out the corner of the part shown in the

monitor image; it also displays the (x, y) coordinates of the corner.

Here are the different elements of the string text:

• The string text begins with a plot line code, which follows the format

Px,y dx,dy.

x y dx dy

In this example, the x value (the x-coordinate of the starting point of the line)

is %1, indicating the x-coordinate is taken from formula 1. The formula 1

result is defined, in this case, as the x-coordinate of the edge of the part, as

detected by the reference line 1. The y value (the y-coordinate of the starting

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Rockwell-automation 5370-CUPK Color CVIM USER-PAK Option Manual de usuario Pagina 135