Types Of Workpiece Measurement; Measurement Of An Edge (Measurement Type 1, 2, 3) - Siemens SINUMERIK 840D sl Function Manual

M5: Measuring
8.4 Setting zeros, workpiece measuring and tool measuring
8.4.3

Types of workpiece measurement

8.4.3.1

Measurement of an edge (measurement type 1, 2, 3)

Measurement of an x edge ($AC_MEAS_TYPE = 1)
The edge of a clamped workpiece is measured by approaching this edge with a known tool.
Figure 8-4
The values of the following variables are evaluated for measurement type 1:
Input variable
$AC_MEAS_VALID
$AA_MEAS_POINT1[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_TYPE
* optional
The following output variables are written for measurement type 1:
Output variable
$AC_MEAS_FRAME
$AC_MEAS_RESULTS[0]
630
x edge
Description
Validity bits for input variables
Measuring point 1 for all channel axes
Setpoint position of x edge *
0: +x, 1: -x
Without specification, calculation is undertaken with the
active plane,
the radius of the tool is used only in G17 and G18 *
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) *
1
Description
Result frame with translations
Position of the measured edge
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions