Siemens SINUMERIK 802D sl Programming And Operating Manual page 239

MEAW=1
MEAW=-1
For MEAW: Measuring probe travels to the programmed position even after is has
triggered. Risk of destruction!
Measuring job status
If the probe has switched, the variable $AC_MEA[1] after the measuring block has the value
=1; otherwise, value = 0.
At the start of a measuring block, the variable is set to the value=0.
Measuring result
When the probe is successfully activated, the result of the measurement is available for the
axes traversed in the measuring block with the following variables after the measuring block:
in the machine coordinate system: $AA_MM[
in the workpiece coordinate system: $AA_MW[
Programming example
N10 MEAS=1 G1 X300 Z-40 F4000
N20 IF $AC_MEA[1]==0 GOTOF MEASERR
N30 R5=$AA_MW[X] R6=$AA_MW[Z]
..
N100 MEASERR: M0
Note
IF instruction - see Section "Conditional program jumps"
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
G1 X... Y... Z... F... ; Measuring with rising edge of the probe, without
G1 X... Y... Z... F... ; Measuring with falling edge of the probe, without
CAUTION
clearing the distance to go
clearing the distance to go
axis
]
axis
]
; Measurement with deletion of distance-
to-go,
; Probe with rising edge
; Measuring error?
; Processing of the measured values
; Measuring error
Programming
10.3 Axis movements
239