Siemens SINUMERIK 840D sl Programming Manual page 305

Sequence
Position before measuring cycle call
The calibration tool must be prepositioned
as shown in the figure:
The "tip" of the calibration tool in the
measuring axis _MA within distance 2 · _FA
in front of the measuring surface.
The center of the calibration tool tip in the
other axis (offset axis) must be in the center
of the probe.
The measuring cycle starts measuring in the
specified axis (_MA) and measuring
direction (_MD) immediately on starting.
Position after end of measuring cycle
When the calibration procedure is completed
the calibration tool is positioned on the
starting position again.
Measuring cycles
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring Cycles for Turning Machines
6.3 CYCLE982 tool: Measure turning and milling tools
305