Siemens SINUMERIK 840D sl Function Manual page 609

Array variable for workpiece and tool measurement
The following array variable of length n is used for further input parameters that are used in
the various measurement types
Type
REAL
The control action of the measurement input parameters is described with the measuring
methods.
Selection of tool or cutting edge
The tool and edge number of the active tool must correspond to the selected tool. When T0,
D0 is selected, the active tool is calculated. If no tool is active, the tool selected by T, D is
calculated. No tool other than the selected tool may be active.
Type
INT
INT
Measurements with 3D probe
When measuring with the 3D probe, the radius of the tool is already compensated with
reference to the measuring point, and therefore the radius does not have to be included
when calculating the various measurement operations. This property can be defined by
means of the following variable:
Type
INT
The variable $AC_MEAS_TOOL_SCREEN can assume the following values:
Value
0x0
0x1
0x2
0x4
0x8
0x10
0x20
0x40
0x80
0x100
0x200
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
System variable
$AC_MEAS_INPUT[n]
System variable
$AC_MEAS_T_NUMBER
$AC_MEAS_D_NUMBER
System variable
$AC_MEAS_TOOL_MASK
Description
All tool lengths are considered (default setting).
Tool radius is not included in the calculation
Tool position in x direction (G19)
Tool position in y direction (G18)
Tool position in y direction (G17)
Tool length is not included in the calculation
Length of the active tool is included in the coordinate transformation of a position.
Tool position in x direction.
Tool position in y direction.
Tool position in z direction.
Tool length differential values are included negatively.
8.4 Setting zeros, workpiece measuring and tool measuring
Description
Measurement input
parameters
Description
Selected tool
Selected cutting edge
Description
Tool position
Measurement (M5)
Values
n = 0 ... 9
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