1-Point Measurement With Reversal And Tool Offset; General Information - Siemens SINUMERIK 840D sl Programming Manual

6.5.4

1-point measurement with reversal and tool offset

6.5.4.1

General information

Function
With this measuring cycle and the _MVAR=1000 measuring variant, the workpiece actual
value is ascertained with reference to the workpiece zero in the measuring axis by acquiring
two opposite points on the diameter.
Before taking the first measurement, the workpiece is positioned at the angular position
programmed in parameter _STA1 with SPOS and the 180° reversal is automatically
generated by the cycle before the second measurement.
The mean value is calculated from both measured values.
Otherwise, the same conditions and tool offset options apply as for measuring variant
_MVAR=10 "1-point measurement and tool offset".
Parameter
Parameter
_MVAR
_SETVAL
_MA
_STA1
_KNUM
_TNUM
_TNAME
_DLNUM
_TENV
1) Measurement in the 3rd axis of the plane (with G18 in Y) is also possible, provided this axis exists.
2) By setting _CHBIT[19]=1 in the GUD6 block, the same parameterization regarding the setpoint can
be used when measuring in the Y axis (3rd axis of the plane) for active G18 as when measuring in
the X axis (transverse axis). In this case, the tool offset is also applied to L1 (effective length in X)
unless specified otherwise using _KNUM.
The additional parameters _VMS, _TZL, _TMV, _TUL, TLL, _TDIF, _TSA, _FA,
_PRNUM, _EVNUM, _NMSP and _K also apply.
Measuring cycles
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Data type Meaning
1000 1-point measurement with reversal and tool offset
REAL Setpoint (according to drawing)
2)
(in the case of facing axis (X) and DIAMON , this is a diameter
dimension)
1, 2, 3 Measuring axis
1)
REAL, >=0 Starting angle (spindle position)
0, >0 0: Without automatic tool offset
>0: With automatic tool offset
(individual values: See Section 2.3, parameter _KNUM)
INTEGER, ≥0 Tool number for automatic tool offset
STRING[32] Tool name for automatic tool offset
(alternative to _TNUM with tool management active)
INTEGER, ≥0 DL number for additive and setup offset
STRING[32] Name of tool environment for automatic tool offset
Measuring Cycles for Turning Machines
6.5 CYCLE974 workpiece: 1-point measurement
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