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XPS-Q8 Controller
XPSDocumentation V1.4.x (EDH0301En1060 — 10/17)
10.4
XY Mapping
XY mapping is only applicable to XY groups. It compensates for all errors of an XY
group at any position of that XY group. XY mapping can be used in conjunction with
other compensations, including positioner mapping. So care must be taken about the
unwanted effects of using XY mapping and other compensation at the same time.
XY mapping is defined by 2 compensation tables, in text file format, each for X and Y
errors. In each of these files, the first column specifies the X positions, X being the first
positioner of the XY group, and the first row, the Y positions. Each cell represents the
axis error for that X,Y position as shown in the tables below. The first entry in that file
must be 0 (zero). The separator between the data in each row is the tab. All positions are
relative to the physical home position of the XY group. The data files must contain the
X position = 0 and the Y position = 0. The error at X = Y = 0 must be 0, which means
that the error at the home position is 0. This hardware reference for XY mapping has the
advantage of being independent of the value of the HomePreset.
The following shows the structure of such mapping files:
Error in X = Y = 0 must be 0. This value in the file corresponds to the HomePreset
position in the XY group reference.
Figure 37: XY Mapping
Figure 38: XY Mapping Files.
NOTE
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