Siemens SINUMERIK 840D sl Function Manual page 635

MD26016 $MC_PUNCH_PARTITION_TYPE=1
In contrast to the behavior described above, here the synchronous axis travels the entire
programmed rotation path in the first sub-block of the selected path segmentation function.
Applied to the example, the C axis already reaches the programmed end position C=45 when
it reaches X position X=15. It behaves in the same way in the circular interpolation block below.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
N4: Own channel - only 840D sl
10.4 Automatic path segmentation
635