Panasonic A230, Руководство пользователя, Страница: 238 / 377

Inspection Results and Output OCR Type A230
13 − 12
13.3 Numerical Calculation
Atan, Root, Distance
Atan is denoted by “@” and root is denoted by “$”. Atan and root can be utilized in
calculations using ordinary calculation methods.
Parts of a programme enclosed in brackets are evaluated with priority over the rest of
the calculation.
For example, in the programme $ (CA01+CA02), the part in the brackets is evaluated
first.
Example: The two coordinates of the locations in the diagram detected by
a gray scale edge checker can be used with the Root ($), Distance
( T ) and Atan (@) functions to calculate the angle (
θ
) and the
length of each side.
(X1, Y1)
(X2, Y2)
a
b
c
θ
Side a: CA01 = X2 – X1
Side b: CA02 = Y2 – Y1
Side c: Using the Root ($) function:
CA03 = $(CA01*CA01 + CA02*CA02) (Pythagoras’s
theorem)
Using the Distance (T) function:
CA03 = CA01TCA02
In both cases, the result is output multiplied by 10000.
Angle
θ
: CA04 = @(CA02*10000/CA01)
In the case of the Atan formula, the input is multiplied
by 10000, and the result is output multiplied by 100.
a
b
c
θ
Pythagoras’s theorem
c
2
= a
2
+ b
2
c = (a
2
+ b
2
)
Trigonometry
Angle
θ
= tan
− 1
(b/a)