Siemens SINUMERIK 828D Programming Manual page 343

Note
Rounding cannot be used as a substitute for smoothing (
assumptions with respect to the appearance of the contour within the rounding area. The
type of rounding can depend on dynamic conditions, e.g. on the tool path velocity. Rounding
on the contour is therefore only practical with small
defined contour is to be traversed at the corner.
NOTICE
If a rounding movement initiated by
or end point of the original traversing block (as appropriate for REPOS mode) will be used
for subsequent repositioning (REPOS), rather than the interruption point.
Example
The two outside corners on the groove are to be approached exactly. Otherwise machining
should be performed in continuous-path mode.
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
11.2 Continuous-path mode (G64, G641, G642, G643, G644, G645, ADIS, ADISPOS)
RND
values.
ADIS
, , , or
G641 G642 G643 G644
Path action
). The user should not make any
must be used if a
RND
is interrupted, the starting
G645
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