Siemens Sinumerik 840D sl Programming Manual page 365

Syntax
Further programming details are needed at the corner of the contour for constant tool
orientations relative to the path as a whole. The direction and path length of this motion is
programmed via the vector using the components A8=X, B8=Y C8=Z.
N... ORIPATHS A8=X B8=Y C8=Z
Significance
ORIPATHS
A8= B8= C8=
X, Y, Z
Note
Programming direction vectors A8, B8, C8
If the length of this vector is exactly zero, no retracting movement is executed.
ORIPATHS
Tool orientation relative to the path is activated using ORIPATHS. The orientation is
otherwise transferred from the start orientation to the end orientation by means of linear
large-radius circular interpolation.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Tool orientation relative to the path; blip in orientation characteristic is
smoothed
Vector components for direction and path length
Retracting movement in tool direction
Transformations
6.5 Orientations relative to the path
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