Siemens SINUMERIK 840D sl Function Manual page 560

M5: Measurement
8.5 Setting zeros, workpiece measuring and tool measuring
The plane selection depends on the position of the tool:
● G17 for tool position in the z direction
● G18 for tool position in the y direction
● G19 for tool position in the x direction
Figure 8-18 Tool length measurement for the selected plane G17, G18 and G19
The values of the following variables are evaluated for measurement type 10:
Input variable
$AC_MEAS_VALID
$AA_MEAS_POINT1[axis]
$AC_MEAS_P1_COORD
$AA_MEAS_SETPOINT[axis]
$AC_MEAS_SET_COORD
$AC_MEAS_DIR_APPROACH
$AC_MEAS_ACT_PLANE
$AC_MEAS_TYPE
* optional
The following output variables are written for measurement type 10:
Output variable
$AC_MEAS_TOOL_LENGTH
$AC_MEAS_RESULTS[0]
$AC_MEAS_RESULTS[1]
$AC_MEAS_RESULTS[2]
$AC_MEAS_RESULTS[3]
560
Meaning
Validity bits for input variables
Measuring point 1
Coordinate system of the measuring point *
Set position z0
Coordinate system of setpoint *
0: +x, 1: -x, 2: +y, 3: -y, 4: +z, 5: -z
Calculated as active plane unless otherwise specified *
10
Meaning
Tool length
Tool length in x
Tool length in y
Tool length in z
Tool length L1
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions