Siemens sinumerik 840D sl Function Manual page 61

The position of the orientation coordinate system of a standard tool depends on the active
plane G17, G18, G19 according to the following table:
Table 2-5
Direction of the orientation vector
Direction of the orientation normal vector
Note
The orientation vector of a tool can also be defined via system the variables $TC_DPV bzw.
$TC_DPV3 - $TC_DPV5 in tool data - see /FB1/ Function Manual Basic Machine, Tool
Corrections (W1), "Sum and Set-up Corrections".
This option is expanded in order to specify the orientation normal vector, using system
varables $TC_DPVN3 - $TC_DPVN5. The meaning of the vector components is similar to
the meaning of the components of the tool orientation:
$TC_DPVN3 is the component in the direction of tool length L1,
$TC_DPVN4 is the component in the direction of tool length L2,
$TC_DPVN5 is the component in the direction of tool length L3,
The following machine data must have the value 3 in order to allow the new tool parameters
to be used:
MD18114 $MN_MM_ENABLE_TOOL_ORIENT (assign orientation to tool cutting)
The coordinate system is not rotated through the programming of a rotation of the tool with
AN3, BN3, CN3 or THETA.
Programming example
A programming example for generic 5-axis transformation is shown in Chapter "Example for
Generic 5-axis Transformation".
Restrictions
Generic 6-axis transformation requires 6 axes and is therefore only available on systems
with at least 6 axes.
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Position of the orientation coordinate system
2.6 Generic 5-axis transformation and variants
G17 G18
Z Y
Y X
Detailed description
G19
X
Z
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