Siemens Sinumerik 840D sl Programming Manual page 272

Special Motion Commands
4.7 Measurements with touch trigger probe (MEAS, MEAW)
Reading measurement results
The measurement results for the axes acquired with probes are available in the following
variables:
• $AA_MM[<axis>]
Measurement results in the machine coordinate system
• $AA_MW[<axis>]
Measurement results in the workpiece coordinate system
No internal preprocessing stop is generated when these variables are read.
Note
A preprocessing stop must be programmed with STOPRE at the appropriate position in the
program. The system will otherwise read false values.
Syntax
MEAS=<TE> G... X... Y... Z...
MEAW=<TE> G... X... Y... Z...
Significance
MEAS
MEAW
<TE>
G...
X... Y... Z... End point in Cartesian coordinates
272
Command: Measuring with deletion of distance-to-go
Effective: non-modal
Command: Measuring without deletion of distance-to-go
Effective: non-modal
Trigger event to initiate measurement
Type: INT
Range of values: -2, -1, 1, 2
Note:
There are up to a maximum of 2 probes
(dependent on configuration level).
Significance:
(+)1 Rising edge of probe 1 (measuring input 1)
-1 Falling edge of probe 1 (measuring input 1)
(+)2 Rising edge of probe 2 (measuring input 2)
-2 Falling edge of probe 2 (measuring input 2)
Note:
There are up to a maximum of 2 probes (dependent on configuration
level).
Type of interpolation, e.g. G0, G1, G2 or G3
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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