Siemens SINUMERIK 840D sl Function Manual page 631

X2/Y2:
SPP:
SPP':
Figure 10-4
Example of SPN
The number of path segments per block is programmed via SPN.
A value programmed via SPN takes effect on a non-modal basis for both punching and 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
travel 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.
Program code
N1 G01 X0 Y0 SPOF
N2 X75 SPN=3 SON
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Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Programmed traversing distance
Programmed SPP value
Automatically rounded-off offset distance
Path segmentation
Comment
; position without punch initiation
; Activate nibbling. The total path is
; divided into three segments. Before the first
; movement and at the end of each segment, a
; stroke is triggered.
N4: Own channel - only 840D sl
10.4 Automatic path segmentation
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