Rockwell Automation 5370-CVIM2 Module - Manual (Page 234)

5 Chapter Chapter 6
Reference Tools
6–75
Figure 6.64 Example: Entering Theta Formula in Keyboard
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NOTE: The formula is “ {Tool 1.Theta#}. ” The “ # ” sign must be replaced
with the contour number, which, in this example, is “ 1 .” Thus, the formula
must be amended to “ {Tool 1.Theta1}, ” and the formula will then return the
theta angle of contour #1 in the window tool (the dark object).
A theta operation requires also that the “center of rotation” data be acquired.
This is accomplished using the
and buttons, as
illustrated by Figure 6.65 (page 6–76).
When you pick the button, the formula entry keyboard appears,
the upper portion of which is shown in Figure 6.65. For this theta mode
example, an X
c
formula is needed that will acquire the X–axis coordinate of
the object’s centroid from the window tool. This formula is entered into the
keyboard as shown in Figure 6.65.