Siemens SINUMERIK 840D sl Function Manual page 1528

W1: Tool offset
18.12 Working with tool environments
The notation of the characters in the string (upper or lower case) is arbitrary. Any number
of spaces or tabs (white spaces) can be inserted.
The individual meanings are as follows:
C:
E:
G:
S:
W:
_CORCOMP
This parameter specifies the component(s) of the two data sets that are to be described. If
this parameter is not specified then its value is 0.
Meaning of the numerical values:
0:
1:
2:
3 - 5:
6:
7 – 11:
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Adapter or tool base dimension (whichever of the two alternative components is
active for the tool in use)
Setup offsets
Geometry
Sum offsets
Wear
INT
The offset value _CORVAL[0] refers to the geometry axis transferred in param‐
eter _GEOAX in the workpiece coordinate system, i.e. the offset value must be
calculated in the designated tool components so that, taking account all the pa‐
rameters that can influence the tool length calculation, as a result, a change of
the total tool length by the specified value in the specified axis direction is ob‐
tained.
This change should be achieved by the correction of the component specified in
_COMP and the symbolic algorithm specified in _CORMODE (see the following
parameters). The resulting correction can therefore have an effect on all three
axis components.
Like 0, however, vectorial. The content of vector _CORVAL refers to abscissa,
ordinate, applicate in the workpiece coordinate system (WCS).
The subsequent parameter _GEOAX is not evaluated.
Vectorial offset, i.e. L1, L2 and L3 can change simultaneously.
In contrast to the versions from 0 and 1, the offset values contained in _CORV‐
AL refer to the coordinates of Val
MODE) of the tool.
Any possible inclination of an existing tool compared with the workpiece coordi‐
nate system has no influence on the offset.
Correction of tool lengths L1 to L3 ($TC_DP3 to $TC_DP5) or the corresponding
values for wear, setting up or additive offsets.
The offset value is contained in _CORVAL[0]. It is measured in the coordinates
of the Val component (see following parameter _CORMODE) of the tool. Any
1
possible inclination of an existing tool compared with the workpiece coordinate
system has no influence on the offset.
Correction of the tool radius ($TC_DP6) or the corresponding values for wear,
setting up or additive offsets.
Correction of $TC_DP7 to $TC_DP11 or the corresponding values for wear,
setting up or additive offsets. These parameters are treated just like the tool
radius.
components (see following parameter _COR‐
1
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions