Measurement Results - Siemens SINUMERIK 840D sl Function Manual

Measurement (M5)
8.5 Axial measurement (optional)
8.5.4

Measurement results

Measurement results
The results of the measurement commands are stored in system data of the NCK and can
be read via system variables in the part program.
● System variable $AC_MEA[No]
● System variable $AA_MM1[axis] to $AA_MM4[axis]
● System variable $AA_MW1[axis] to $AA_MW4[axis]
Programming
If two measuring systems are used to take the measurement, a maximum of two trigger
events may be programmed. The measured values of both encoders are recorded for each
of the two trigger events.
A trigger event
$AA_MM1[axis] = trigger event 1, measured value from encoder 1
$AA_MM2[axis] = trigger event 1, measured value from encoder 2
Two trigger events
$AA_MM1[axis] = trigger event 1, measured value from encoder 1
$AA_MM2[axis] = trigger event 1, measured value from encoder 2
$AA_MM3[axis] = trigger event 2, measured value from encoder 1
$AA_MM4[axis] = trigger event 2, measured value from encoder 2
676
Query measurement job status signal.
<No.> stands for probe (1 or 2)
The variable is deleted at the beginning of a measurement. The variable is set as soon as
the probe fulfills the activation criterion (rising or falling edge). Execution of the
measurement job can thus be checked in the part program.
Access to the measured value of the trigger signal in the machine coordinate system.
Read in part program and in synchronized actions.
<axis> stands for the name of the measurement axis (X, Y, ...).
Access to the measured value of the trigger signal in the workpiece coordinate system.
Read in part program and in synchronized actions.
<axis> stands for the name of the measurement axis (X, Y, ...).
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions