Siemens SINUMERIK 840D sl Function Manual page 91

For machining inclined surfaces, the tool offsets must be appropriately defined or calculated
based on the functions for "Tool length compensation for tools that can be orientated".
2½ D tool radius compensation with rotation of the compensation plane (CUT2DF, CUT2DFD)
If a frame is programmed that contains a rotation, then for CUT2DF or CUT2DFD, the plane in
which the tool radius compensation takes place (correction plane) is also rotated. The tool
radius compensation is taken into account, referred to the rotated machining plane (G17, G18,
G19). However, the tool length compensation still acts relative to the non-rotated machining
plane.
Requirement: At the machine, the tool orientation must be able to be adjusted perpendicular to
the rotated machining plane, and set for machining.
Note
The tool length compensation continues to be active relative to the non-rotated working plane.
Tools
Function Manual, 06/2019, A5E47435126B AA
W1: Tool offset
2.6 2 1/2 D tool radius compensation
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