Siemens SINUMERIK 840Di Function Manual page 194

Supplementary Conditions
3.2 Smoothing the path velocity
Example
Two traversing blocks N10 and N20 with programmed rounding G641. In the rounding area,
the traversing motion is interrupted and the axes are subsequently traversed, e.g., manually
to the REPOS starting point. Repositioning on the contour takes place differently, depending
on the active REPOS mode.
Fig. 3-1
3.2 Smoothing the path velocity
3.2
Several blocks with SOFT and BRISK
Smoothing of the path velocity is only effective in continuous-path mode with LookAhead
over several blocks with SOFT and BRISK, but not with G0.
The cycle times of the control must be parameterized such that the preprocessing is
provided with enough blocks to be able to analyze an acceleration process.
3-2
Example of Rounding and REPOS
Continuous-Path Mode, Exact Stop, LookAhead (B1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0