Rockwell Automation 5370-CVIM2 Module - Manual (Page 163)

Chapter 6
Reference Tools
6–4
The sections following Table 6.1 provide detailed descriptions of the six
reference line tool operations and how they apply shift and/or rotation
compensation to the associated inspection tool during setup and online
operations.
Table 6.1 Reference Line Operations: Summary
Reference Line
Operation
Functions
X only Compensates for horizontal (X–axis) shift only.
Y only Compensates for vertical (Y–axis) shift only.
X then Y Compensates for horizontal (X–axis) shift first, then vertical (Y–axis) shift.
Y then X Compensates for vertical (Y–axis) shift first, then horizontal (X–axis) shift.
X’, X then Y
Compensates for horizontal (X–axis) shift and rotation (two X axes) first, then
vertical (Y–axis) shift.
Y’, Y then X
Compensates for vertical (Y–axis) shift and rotation (two Y axes) first, then
horizontal (X–axis) shift.
X only
The X only operation consists of a single reference line that lies along the
horizontal (X) axis of the image field. X only is appropriate in applications
where workpiece shift is expected in the X–axis, but not in the Y–axis.
Figure 6.3 shows an X only reference line detecting X–axis workpiece shift
and applying X–axis shift to a line gage.
Figure 6.3 Example: Using an X Only Reference Line Operation
INSPECTED
POSITION
Workpiece:
nominal position
Line gage:
original position
Workpiece:
position after shift
Workpiece
shift
NOMINAL
POSITION
X–axis
reference line
X–axis
reference line
Line gage: with X–axis
shift compensation applied