In CYCLE832 "High-Speed-Settings" you can select between four different machining types of the technology "G group 59" and activate the appropriate dynamic parameters.
Roughing DYNROUGH (Index 3)
Semifinishing DYNSEMIFNISH (Index 2)
Finishing DYNFINISH (Index 1)
Deselection DYNNORM (Index 0)
CYCLE832(0.005,1,1); (Finshing with Tolerance 0.005)
Dynamic values and G-commands can be customized user specific and depend upon machine data settings (machine manufacturer!) The four machining types in CYCLE832 are in direct relation to accuracy and velocity of the path contour. In both cases, specifying a tolerance ensures that the machining of a freeform surfaces is observed in order to achieve the desired surface quality and precision. Generally, when roughing, the tolerance is selected higher than when finishing.
Further informations you will find at the Operating Manual SINUMERIK 840D sl/828D Milling.