Siemens SINUMERIK 840D sl Programming Manual page 479

Path curvature
Path curvature is not monitored. In such cases, it is also advisable to use only tools of a type
that do not violate the contour.
Insertion depth (ISD)
Insertion depth ISD is only evaluated when 3D tool radius compensation is active.
Program command ISD (insertion depth) is used to program the tool insertion depth for
circumferential milling operations. This makes it possible to change the position of the
machining point on the outer surface of the tool.
Syntax
3D tool compensation circumference milling
CUT3DC
ISD=<value>
Significance
CUT3DC
ISD
Job Planning
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
Activate 3D tool offset for circumferential milling, e.g., for pocket milling with
oblique side walls.
The clearance (<value>) between the milling tool tip (FS) and the milling
tool construction point (FH) are specified using the command ISD.
7.5 Activate 3D tool offsets (CUT3DC..., CUT3DF...)
Tool offsets
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