Measurement Of An Angle (Measurement Type 4, 5, 6, 7) - Siemens SINUMERIK 840D sl Function Manual

M5: Measurement
8.5 Setting zeros, workpiece measuring and tool measuring
8.5.3.2

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.
Figure 8-4
Figure 8-5
The values of the following variables are evaluated for measurement types 4 to 7:
Input variable
$AC_MEAS_VALID
$AA_MEAS_POINT1[axis]
$AA_MEAS_POINT2[axis]
526
Corner C1, corner C2
C3
P3
y P2
P1
Corner C3, corner C4
y
P4
C4
P3
P4
x
Meaning
Validity bits for input variables
Measuring point 1
Measuring point 2 irrelevant for $AC_MEAS_WP_SE‐
TANGLE
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
P2
P1
x
Extended Functions