Siemens SINUMERIK 840D sl Programming Manual page 290

Measuring Cycles for Turning Machines
6.3 CYCLE982 tool: Measure turning and milling tools
If _CHBIT[20]=1, selected measuring variants are possible for a milling cutter without taking
the starting angle _STA1 into account (see Subsection "Milling cutter: Suppression of start
angle positioning _STA1").
Note
Measurement with rotating spindle
If selection of a certain miller cutting edge is not possible, it is possible to measure with a
rotating spindle. The user must then program the direction of rotation, speed, and feedrate
very carefully before calling up CYCLE982 to prevent damage to the probe. A low speed and
feedrate must be selected.
Position after end of measuring cycle
On completion of the cycle, the tool nose is
positioned facing the last measuring surface
and _FA from it.
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Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles