Siemens SINUMERIK 840D sl Programming Manual page 614

Work preparation
3.7 Special motion commands
Note
MEAS and MEAW are non-modal, and programmed together with motion operations. The
feedrate and interpolation type (G0, G1, etc.) as well as the number of axes must be adapted
for the respective measuring task.
Example
Program code
...
N10 MEAS=1 G1 F1000 X100 Y730 Z40
...
Further information
Query status
If an evaluation is required in the program, whether a probe has been deflected or has switched,
the status can be queried through the following system variables:
System variable
$A_PROBE[<n>]
$AC_MEA[<n>]
<n> = number of the probe
Reading measured values
For channel-specific measuring, the positions of all traversing path and positioning axes of the
block are acquired (maximum number of axes depends on the control configuration). For
MEAS, the motion is braked in a defined fashion after the probe has been triggered.
Note
If a geometry axis is programmed in a measuring block, the measured values are stored for all
current geometry axes.
If an axis participating in a transformation is programmed in a measuring block, the measured
values are stored for all axes participating in this transformation.
614
Meaning
Probe state
Switching status of the probe
$AC_MEA[<n>] is automati‐
cally reset at the beginning of
a measurement.
Comment
; Measuring block with probe at first
measuring input and linear interpola-
tion. A preprocessing stop is automati-
cally generated.
Data type Value
INT 0
1
INT 0
1
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Probe not deflected.
Probe deflected.
Probe has not switch‐
ed
Probe has switched.
NC programming