Siemens SINUMERIK 828D Programming Manual page 340

Path action
11.1 Exact stop (G60, G9, G601, G602, G603)
G603
The block change is initiated when the control has calculated a set velocity of zero for the
axes involved. At this point, the actual value lags behind by a proportionate factor depending
on the dynamic response of the axes and the path velocity. The workpiece corners can now
be rounded.
Configured exact stop criterion
A channel-specific setting can be made for
group indicating that contrary to the programmed exact stop criterion a preset criterion
should be used automatically (see machine manufacturer's specifications).
References
Function Manual, Basic Functions, Continuouspath Mode, Exact Stop, Look Ahead (B1)
340
and the other commands in the first G function
G0
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
Fundamentals