Rockwell-automation 5370-UPK CVIM USER-PAK Option Manual de usuario descargar pdf (Pagina 119)

Chapter 8

Defining Strings for Serial Ports and Viewports

8–43

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 point of the line) is %2, indicating the y–coordinate is taken from

formula 2. The formula 2 result is defined, in this case, as the y–coordinate

of the edge detected by the reference line. Thus the line’s starting point,

based on the two formula results, is located at the corner of the part. As the

part position changes from inspection to inspection, the starting point of the

line moves accordingly.

The dx and dy values are each 10, which plots a short line from the starting

point to an end point which is 10 pixels to the right, and 10 pixels down.

• Data codes (F1 and F2) are used to display the results of formula 1 and

formula 2.

The format code (3) or (–3) is added on to each data code to limit the

display field to three places for the result, and to left justify the second

result.

The ! symbol, the conditional color–code indicator, is also added to each

data code. This has the effect of displaying the results in a conditional

color (green, yellow, or red), depending on the status of each formula

(pass, warning, or fail, respectively).

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Rockwell-automation 5370-UPK CVIM USER-PAK Option Manual de usuario Pagina 119