Measurement Of An Oblique Angle In A Plane (Measurement Type 17) - Siemens SINUMERIK 840D sl Function Manual

The following output variables are written for measurement type 16:
Output variable
$AC_MEAS_FRAME
$AC_MEAS_WP_ANGLE
8.4.3.9

Measurement of an oblique angle in a plane (measurement type 17)

Measurement of an angle in a plane ($AC_MEAS_TYPE = 17)
The oblique plane is determined using three measuring points P1, P2 and P3.
Figure 8-16
$AC_MEAS_TYPE = 17 defines two resulting angles α
these are entered in $AC_MEAS_RESULTS[0..1]:
● $AC_MEAS_RESULTS[0] → Rotation at the abscissa
● $AC_MEAS_RESULTS[1] → Rotation at the ordinate
These angles are calculated by means of the three measuring points P1, P2 and P3. In this
type of measurement the angle for the applicate ($AC_MEAS_RESULTS[2]) is always pre-
filled with 0.
A setpoint rotation that is entered in the result frame can be input for the abscissa and/or the
ordinate. If only one angle is specified with a setpoint, the second angle is calculated such
that the three measuring points are on an oblique plane with the setpoint angle. Only
rotations are entered in the result frame, the WCS reference point is retained. The WCS is
rotated such that z' is perpendicular to the oblique plane.
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
8.4 Setting zeros, workpiece measuring and tool measuring
Oblique plane in G17
Description
Result frame with rotation
Calculated workpiece position angle
and α
0
M5: Measuring
for the skew of the plane;
1
649