Siemens SINUMERIK 840D sl Function Manual page 759

10.4 Automatic path segmentation
10.4.1 General information
Function
One of the following two methods can be applied to automatically segment a programmed
traversing path:
● Path segmentation with maximum path segment programmed via language command SPP
● Path segmentation with a number of segments programmed via language command SPN
Both functions generate sub-blocks independently.
In earlier systems
● SPP<number> corresponds to E<number>
● SPN<number> corresponds to H<number>
Since addresses E and H now represent auxiliary functions, language commands SPP and
SPN are used to avoid conflicts. The new procedure is therefore not compatible with those
implemented in earlier systems. Both language commands (SPP and SPN) can be
configured.
Note
The values programmed with SPP are either mm or inch settings depending on the initial
setting (analogous to axes).
The automatic path segmentation function ensures that the path is divided into equidistant
sections with linear and circle interpolation.
When the program is interrupted and automatic path segmentation is active (SPP/SPN), the
contour can be reentered only at the beginning of the segmented block. The first punch
stroke is executed at the end of this sub-block.
SPP and SPN can be activated only if geometry axes are configured.
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Punching and Nibbling (N4)
Automatic path segmentation
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