Siemens SINUMERIK 840D sl Programming Manual page 135

NOTICE
If you want to position with the tool in the program, the approximate probe length should be
known and entered in the tool offset memory. Otherwise, position the probe with JOG in
front of the calibration surface.
The exact ball radius must be known and entered.
The first time calibration is performed the default setting in the array of the probe is still "0".
Therefore:
_TSA> probe ball radius must be programmed to avoid alarm "Safe area violated".
Parameter
Parameter
_MVAR
_SETVAL
_MA
_MD
_PRNUM
The following additional parameters are also valid:
_VMS, _CORA, _TZL, _TSA, _FA and _NMSP.
_CORA only relevant for monodirectional probe.
_TSA is only evaluated with reference to the trigger value, not with reference to the tool
length.
See also
Variable measuring velocity: _VMS (Page 76)
Offset angle position: _CORA (Page 76)
Tolerance parameters: _TZL, _TMV, _TUL, _TLL, _TDIF and _TSA (Page 77)
Measurement path: _FA (Page 78)
Multiple measurement at the same location: _NMSP (Page 81)
Measuring cycles
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Data type
10000
REAL
3
0 positive axis direction
1 negative axis direction
>0
Measuring Cycles for Milling and Machining Centers
5.3 CYCLE976 calibrate workpiece probe
Meaning
Calibration in applicate with length calculation
Calibration setpoint (position of surface)
Measuring axis, only tool axis (applicate) possible
Measuring direction
Probe number
135