Siemens SINUMERIK 802D sl Function Manual page 283

If the programmed path segmentation is not an integral multiple of the total path, then the
feed path is reduced.
X2/Y2:
SPP:
SPP':
Figure 15-4
Example of SPN
The number of path segments per block is programmed via
A value programmed via
nibbling applications. The only difference between the two modes is with respect to the first
stroke. This is normally executed at the beginning of the first segment with nibbling
operations and at its end with punching operations. This means that when n segments are
programmed, n strokes are executed with punching operations but n+1 with nibbling.
Furthermore, where no traversing information is available, only a single stroke is executed,
even if several are programmed. Should it be necessary to generate several strokes at one
position, then the corresponding number of blocks without traversing information must be
programmed.
N1 G01 X0 Y0 SPOF
N2 X75 SPN=3 SON
:
:
:
:
N3 Y10 SPOF
N4 X0 SPN=2 PON
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Programmed traversing distance
Programmed SPP value
Automatically rounded-off offset distance
Path segmentation
takes effect on a non-modal basis for both punching and
SPN
; Position without punch initiation
; Activate nibbling. The total path is divided into
; three segments. A stroke is initiated before the
; first movement and at the end of each segment.
; Position without punch initiation
; Activate punching. The total path is divided into two
Punching and Nibbling (N4)
15.4 Automatic path segmentation
.
SPN
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