Siemens sinumerik 840d Programming Manual page 181

08.97 04.00
5
840D 840D
NCU 571 NCU 572
NCU 573
Additional notes
No internal preprocessing stop is generated when these
variables are read.
A preprocessing stop must be programmed with
STOPRE (Section 15.1) at the appropriate position.
False values will otherwise be read in.
If axial measurement is to be started for a geometry
axis, the same measuring job must be programmed
explicitly for all remaining geometry axes.
The same applies to axes involved in a transformation.
Example:
N10 MEASA[Z]=(1,1) MEASA[Y]=(1,1)
MEASA[X]=(1,1) G0 Z100;
or
N10 MEASA[Z]=(1,1) POS[Z]=100
Measuring job with 2 measuring systems
If a measuring job is executed by two measuring
systems, each of the two possible trigger events of both
measuring systems of the relevant axis is acquired. The
assignment of the reserved variables is therefore
preset:
$AA_MM1[axis]
$AA_MM2[axis]
$AA_MM3[axis]
$AA_MM4[axis]
Measuring probe status can be read via
$A_PROBE[n]
n=Probe
1==Probe deflected
0==Probe not deflected
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
5.7 Extended measuring function MEASA, MEAWA, MEAC
810D 840Di
CCU 2
or $AA_MW1[axis]
or $AA_MW2[axis]
or $AA_MW3[axis]
or $AA_MW4[axis]
Special Motion Commands
Measured value of measuring system 1
on trigger event 1
Measured value of measuring system 2
on trigger event 1
Measured value of measuring system 2
on trigger event 1
Measured value of measuring system 2
on trigger event
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