Rockwell Automation 5370-CVIM2 Module - Manual (Page 289)

5 Chapter Chapter 7
Inspection Tools
7–51
Note that the maximum measurable angle in each direction is 90.0
°
(clockwise) and –90.0
° (counterclockwise), since there is no provision for
resolving the direction of the major axis. For example, if the object in
Figure 7.43 (A) were to rotate counterclockwise past the –90.0
° point, its
theta would become positive.
NOTE: Although the angle values appear in the Pick Target panel with an
apparent accuracy of one place to the right of the decimal, the actual values
available to the math tool are stored with the full floating point accuracy.
H Size, L Size –– The L Size contour measurement function returns the size,
in pixels, of an object’s major axis, while the H Size function returns the
size of an object’s minor axis, as illustrated in Figure 7.45.
Figure 7.45 Example: H Size and L Size Contour Measurement Functions
L Size
H Size
NOTE: These measurement functions are active only for Catalog No.
5370–CVIM2AC, which is a CVIM2 module equipped with an Advanced
Contour Extractor (ACE) daughter board.