Siemens SINUMERIK 828D Function Manual page 1365

Feedrate for chamfer/rounding FRC, FRCM
The machining conditions can change significantly during surface transitions to chamfer/rounding. The chamfer/
rounding contour elements therefore need their own optimized feedrate values in order to achieve the required
surface finish.
You can program the feedrate for the chamfer/rounding with FRC (non-modal) or FRCM (modal).
Non-modal feedrate FB
A separate feedrate can be specified for an individual block with the FB command. The earlier active path
feedrate is overwritten for this block; the earlier effective modal path feedrate is active again after this block.
Programmable single­axis dynamic response
The dynamic response of individual axes can be changed in a targeted manner via programming.
• Percentage acceleration override (ACC) in part program and synchronized actions
• Programmable end of motion criterion: FINEA (exact stop fine), COARSEA (exact stop coarse), IPOENDA
(Interpolator stop) in the part program and in synchronized actions
• Programmable servo parameter set (SCPARA) in the part program and in synchronized actions
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
V1: Feedrates
17.1 Brief Description
1365