Measurement Of A Web (Measurement Type 13) - Siemens SINUMERIK 840D sl Function Manual

M5: Measurement
8.5 Setting zeros, workpiece measuring and tool measuring
8.5.3.6

Measurement of a web (measurement type 13)

Measuring points for determining the position of a web ($AC_MEAS_TYPE = 13)
A web is measured by approaching the two outside corners or inner edges. The web center
can be set to a setpoint position. The component of the approach direction determines the web
position.
Figure 8-9
The values of the following variables are evaluated for measurement type 13:
Input variable
$AC_MEAS_VALID
$AA_MEAS_POINT1[axis]
$AA_MEAS_POINT2[axis]
$AA_MEAS_SETPOINT[axis]
$AC_MEAS_DIR_APPROACH
$AC_MEAS_ACT_PLANE
$AC_MEAS_FINE_TRANS
$AC_MEAS_FRAME_SELECT
$AC_MEAS_T_NUMBER
$AC_MEAS_D_NUMBER
$AC_MEAS_INPUT[0]
$AC_MEAS_TYPE
* optional
The following output variables are written for measurement type 13:
Output variable
$AC_MEAS_FRAME
$AC_MEAS_RESULTS[0]
$AC_MEAS_RESULTS[1]
536
Web
Meaning
Validity bits for input variables
Measuring point 1
Measuring point 2
Setpoint position of web center *
0: +x, 1: -x, 2: +y, 3: -y, 4: +z, 5: -z
Calculated as active plane unless otherwise specified *
0: Coarse offset, 1: Fine offset *
Calculated as additive frame unless otherwise specified *
Calculated as active T unless otherwise specified (T0) *
Calculated as active D unless otherwise specified (D0) *
Approach direction for 2nd measuring point for a recess
measurement. Must have the same coordinate as the ap‐
proach direction of the 1st point. *
0: +x, 1: -x, 2: +y, 3: -y, 4: +z, 5: -z
13
Meaning
Result frame with translation
Position of calculated web center (x0, y0 or z0)
Web width in approach direction
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions