Siemens SINUMERIK 840D sl Programming Manual page 236

Measuring Cycles for Milling and Machining Centers
5.9 CYCLE997 workpiece: Measuring a sphere and ZO determination
Parameter
Input data
_SETPOINT[3,3]
_MEASPOINT[3,3] REAL
_COR
_RESLIM
The results of calculation are stored in these transfer parameters.
Output data
_ALARM
_RES
_REFRAME
Note
Correction
The frame to be corrected must not contain any mirroring or scaling factors. If no channel
basic frame exists for G500, a cycle alarm (_ALARM>0) is output.
The new frame data with renewed programming of the G command of the associated
settable frame is activated (G500, G54 to ...) outside this cycle by the user.
236
Data type Meaning
REAL Field for 3 setpoint positions in the sequence 1st, 2nd, 3rd,
geometry axis (X, Y, Z)
These points are the reference triangle.
Field for 3 setpoint positions measured in the sequence 1st, 2nd,
3rd, geometry axis (X, Y, Z). This is the real position in space of
the described triangle.
INTEGER Offset
Values 0: No compensation
:
1...99: ZO compensation in G54...G57, G505..G599
1000: ZO compensation of last active channel basic
frame according to MD 28081
1011 to 1026: ZO compensation in channel basic frame
2000: ZO compensation in scratch system frame
$P_SETFR
9999: ZO compensation in active frame, settable frame
G54...G57, G505...G599 and/or with G500 in last active
basic frame according to $P_CHBFRMASK
REAL Limit value for distortion (only relevant, if _COR >0)
If _RES is below this limit value, OZ is corrected,
otherwise an alarm is output.
Data type Meaning
INTEGER Cycle alarm number for feedback
(transfer value must be 0 on cycle call).
REAL Result of calculation
Values < 0: No frame was calculated An alarm (_ALARM > 0) is
: returned.
≧0: Calculation was successful. The size of the value a
measure of the distortion of the triangle, for example, by
measurement inaccuracies. It is the sum of the variances
of the individual points in mm.
FRAME Result frame, difference from actual frame
If this result frame is linked to the active frame, the measured
triangle position is given the desired
setpoint position (workpiece coordinates).
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles