Renishaw NC1 Programming Manual page 48

Tool radius/diameter setting
R17=q q= Overtravel distance and radial clearance.
For details, see "Setting-data subroutine L9760" on
page 13.
Default value: 5.0 mm (0.197 in)
R18=r r= Diameter of tool.
This is the nominal diameter of the tool.
Default value: Maximum diameter of tool in
RENC[12].
R19=s s= Spindle speed at which diameter measurement takes
place. For details, see "Setting-data subroutine L9760"
on page 13.
Default value: 3150 rev/min
R24=x x= Spindle axis search distance.
This defines a search distance above the R26=z input
measuring height, which can be used to find a radial
high spot on the cutter. It is suitable for single-point
boring bars and cutters with irregular radial profiles.
Cycle time is increased using this input.
Default value: Zero (0)
R26=z z= Measuring height of tool.
This is the Z-axis position from the end face of the tool
at which measurement takes place.
Default value: 5.0 mm (0.197 in)
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