M5: Measurement
7.5 Setting zeros, workpiece measuring and tool measuring
Extended Functions
470 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
7.5.3.2 Measurement of an angle (measurement type 4, 5, 6, 7)
Measurement of a corner C1 - C4 ($AC_MEAS_TYPE = 4, 5, 6, 7)
A corner is uniquely defined by approaching four measuring points P1 to P4. Three
measuring points suffice for a known angle of intersection ϕ.
If the angle of intersection ϕ and the workpiece position angle α are known, two
measurement points P1 and P3 suffice.
\
3
3
3
3
&
\
3
3
3
3
&
[
[
Figure 7-4 Corner C1, corner C2
x
y
P1
P2
P3
P4
C3
x
y
P1
P2
P3
P4
C4
Figure 7-5 Corner C3, corner C4
The values of the following variables are evaluated for measurement types 4 to 7:
Input variable Meaning
$AC_MEAS_VALID Validity bits for input variables
$AA_MEAS_POINT1[axis] Measuring point 1
$AA_MEAS_POINT2[axis] Measuring point 2 irrelevant for
$AC_MEAS_WP_SETANGLE
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