Sharp SV2414 Maintenance Manual page 55

PRECISION MACHINE TOOLS
7-3 Determination of the Z-Axis Coordinate Origin
Shift the Z-axis from the nose end of the spindle to a position that is 100mm above the workbench.
See the figure below.
2.
1) Treat this position as the origin. Zero the value corresponded to the Z-axis on the screen.
2) Shift the Z-axis to a position where the corresponding position on the screen is 560mm.
Nose end of the spindle
100mm
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Ver 1 Maintenance Manual