Siemens Sinumerik 840D sl Programming Manual page 380

Transformations
6.8 Kinematic transformation
Groove traversing-section
In the case of axis configuration 1, longitudinal grooves along the rotary axis are subject to
parallel limits only if the groove width corresponds exactly to the tool radius.
Grooves in parallel to the periphery (transverse grooves) are not parallel at the beginning and
end.
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Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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