Siemens SINUMERIK 840D sl Programming Manual page 336

Measuring Cycles for Turning Machines
6.5 CYCLE974 workpiece: 1-point measurement
Prerequisite
If necessary, the workpiece must be positioned in the correct angular spindle position with
SPOS before the cycle is called.
Parameter
Parameter
_MVAR
_SETVAL
_MA
_KNUM
1) Measurement in the 3rd axis of the plane (with G18 in Y) is also possible, provided this axis exists.
Moreover, for measurement in the 3rd axis of the plane with active G18 (measurement in the Y axis),
the same setpoint parameterization can be used as for measurement in the X axis (facing axis), if
_CHBIT[19]=1 is set in block GUD6. The offset is then stored in the X-component of the selected ZO
memory.
Additional parameters _VMS, _TSA, _FA, _PRNUM, _EVNUM and _NMSP also apply.
See also
Defining parameters (Page 63)
Result parameters (Page 65)
Variable measuring velocity: _VMS (Page 76)
Tolerance parameters: _TZL, _TMV, _TUL, _TLL, _TDIF and _TSA (Page 77)
Measurement path: _FA (Page 78)
Probe type, probe number: _PRNUM (Page 79)
Empirical value, mean value: _EVNUM (Page 80)
Multiple measurement at the same location: _NMSP (Page 81)
336
Data type Meaning
100 1-point measurement and ZO determination
REAL Setpoint, with reference to the workpiece zero
1)
1, 2, 3 Measuring axis
1)
0, >0 0: No automatic ZO correction
>0: With automatic ZO correction
(individual values: see section "Description of the most important
defining parameters", Parameter _KNUM)
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles