Measurement Of A Hole (Measurement Type 8) - Siemens SINUMERIK 840D sl Function Manual

Measurement (M5)
8.4 Setting zeros, workpiece measuring and tool measuring
$P_SETFR = $P_SETFRAME
g1 x0 y0
g1 x10
y10
x0
y0
m30
8.4.3.3

Measurement of a hole (measurement type 8)

Measuring points for determining a hole ($AC_MEAS_TYPE = 8)
Three measuring points are needed to determine the center point and diameter. The three
points must all be different. With specification of four points, the circle is adjusted in
accordance with the least square method. The circle is determined so that the sum of the
distance squares of the points to the circle is minimal. The quality of the adjustment can be
read.
Figure 8-9 Hole
The values of the following variables are evaluated for measurement type 8:
Input variable
$AC_MEAS_VALID
$AA_MEAS_POINT1[axis]
$AA_MEAS_POINT2[axis]
$AA_MEAS_POINT3[axis]
$AA_MEAS_POINT4[axis]
624
; Describe system frame in data management
; Approach the corner
; Approach the rectangle
Description
Validity bits for input variables
Measuring point 1
Measuring point 2
Measuring point 3
When specified, the center is determined from four points *
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions