Siemens SINUMERIK 840D sl Function Manual page 1529

_CORMODE
This parameter specifies the type of write operation to be executed.
If this parameter is not specified then its value is 0.
Meaning of the ones location:
The notation Val
_STAT) are evaluated in different ways, i.e. if a rotation is effective between the two com‐
ponents, then Val
deleting Val
_CORVAL always refers to Val
piece coordinate system (WCS). It is therefore already transformed with respect to the tool
components, in which it should be calculated. Therefore, it cannot be directly calculated
together with the saved value, but must be transformed back prior to adding to Val
Val
This can mean that the offset acts on an axis different than the one defined by _COR‐
COMP – or that it acts on several axes.
For the case CORRCOMP = 0, i.e. if _CORVAL does not contain a vector, but only an
individual value, then the described operations are executed in the coordinates in which
_CORVAL was measured (WCS). In particular, this also applies to setting Val
in versions 2 and 3. This result is then transformed back into the coordinates of the tool.
This can mean that none of the coordinate values to be set to zero (L1, L2, L3) become
zero, or coordinate values, that were previously zero, are now not equal to zero. However,
if the corresponding operations are successively executed for all three geometry axes, then
all three coordinate values of the components to be deleted are always zero. If the tool is
not rotated with respect to the workpiece coordinate system or is rotated so that all tool
components remain parallel to the coordinate axes (axis exchange operations), then this
also ensures that only one tool coordinate changes.
The successive execution of the same operation (_CORRMODE) with _CORCOMP = 0 for
all three coordinate axes in any sequence is identical with the single execution of the same
operation with _CORCOMP = 1.
_T
Internal T number of the tool. If this parameter is not specified or if its value is 0, then the
tool stored in _STAT is used. If the value of this parameter is -1, the T number of the active
tool is used. It is also possible to explicitly specify the number of the active tool.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
INT
0:Val = _CORVAL
1new
1:Val = Val + _CORVAL
1new 1old
2:Val = _CORVAL
1new
Val = 0
2new
3:Val = Val + Val
1new 1old
Val = 0
2new
+ Val
1old 2old
is transformed prior to addition so that the resulting tool length after
2old
and prior to the addition of _CORVAL remains unchanged.
2new
.
2
INT
+ _CORVAL
2old
is symbolic. If the two components (due to the status of
_CORVAL is a value that is always measured in the work‐
1.
W1: Tool offset
18.12 Working with tool environments
or
1
to zero
2new
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