Siemens SINUMERIK 840D sl Programming Manual

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: Size of path segment (maximum distance between strokes); modal
SPN: Number of path segments per block; modally effective
Work preparation
3.19 Punching and nibbling
NC programming
968 Programming Manual, 12/2019, 6FC5398-2EP40-0BA0

Siemens SINUMERIK 840D sl Specifications

General

Control Type	CNC
Number of Axes	Up to 31
Max Number of Channels	10
Interfaces	Ethernet, PROFIBUS, PROFINET, USB
Interpolation	5-axis interpolation
Operating Temperature	0°C to 45°C
Relative Humidity	Up to 95% (non-condensing)
Display	TFT color display, various sizes
Programming Languages	DIN/ISO
Safety Features	Safety Integrated
PLC	Integrated PLC S7-300
Drive Interface	SINAMICS S120
Data Storage	CF card, USB
Operating System	Windows-based