Siemens SINUMERIK 840D sl Programming Manual page 219

5.6.2.2 Operational sequence
Specification of setpoints
The setpoint for diameter or width is specified in _SETVAL.
The setpoint for the center point of the hole, shaft, or for the measured center of the groove,
web, is specified by
• _CPA for the abscissa and
• _CPO for the ordinate.
Measuring axes
Measuring axes are not specified. As a rule, both axes of the plane are included in the
measurements, depending on the angle.
Position before measuring cycle call
In all measuring variants the probe must be positioned at the required measuring height in
the applicate (tool axis) close to the first measuring point P1.
It must be possible to approach the first measuring point P1 via intermediate point P1' from
this position without collision using linear interpolation.
Recommended distance from contour: >_FA.
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring Cycles for Milling and Machining Centers
5.6 CYCLE979 workpiece: Measure hole/shaft/groove/rib at an angle
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