Automatic Path Segmentation - Siemens SINUMERIK 840D sl Programming Manual

Work preparation
3.19 Punching and nibbling
3.19.2

Automatic path segmentation

Segmentation into path segments
When punching or nibbling is activated, both SPP and SPN segment the total traversing section
programmed for the path axes into a number of path segments with the same length
(equidistant path segmentation). Internally, each path segment corresponds to a block.
Number of strokes
When punching, the first stroke is realized at the end point of the first path segment; but for
nibbling, at the starting point of the first path segment. Therefore the following numbers are
obtained over the complete traversing section:
Punching: Number of strokes = number of path segments
Nibbling: Number of strokes = number of path segments +1
Auxiliary functions
Auxiliary functions are executed in the first of the generated blocks.
Syntax
SPP=
SPN=
Meaning
SPP:
SPN:
968
Size of path segment (maximum distance between strokes); modal
Number of path segments per block; modally effective
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming