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

M5: Measuring
8.4 Setting zeros, workpiece measuring and tool measuring
8.4.3.2

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 measurement points suffice in the case of known angles 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 8-7
Figure 8-8
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]
$AA_MEAS_POINT3[axis]
634
Corner C1, corner C2
Corner C3, corner C4
Description
Validity bits for input variables
Measuring point 1
Measuring point 2 irrelevant for
$AC_MEAS_WP_SETANGLE
Measuring point 3
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions