Siemens SINUMERIK 840D sl Programming Manual page 703

No. Param Param
mask internal
15 NRC
NN NID
16
17 P0 _PP1
18 P1 _PP2
19 P2 _PP3
20 _VARI
21 N _NUMTH
22 _VRT
23 D1 _MID
24 DA _GDEP
25 _IFLANK
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
Explanation
Number of roughing cuts, see _VARI (TEN THOUSANDS)
Number of non-cuts
Pitch for 1st section of thread, see _PITA
Pitch for 2nd section of thread, see _PITA
Pitch for 3rd section of thread, see _PITA
Machining
UNITS: Technology
1 = External thread with linear infeed
2 = Internal thread with linear infeed
3 = External thread with degressive infeed, cross-section of cut remains constant
4 = Internal thread with degressive infeed, cross-section of cut remains constant
TENS: Reserved
HUNDREDS: Infeed type
0 = Compatibility mode for _IANG
1 = Infeed on one side
2 = Infeed alternate sides
THOUSANDS: Reserved
TEN THOUSANDS: Alternative depth infeed
0 = Compatibility, preset number of roughing cuts (_NRC)
1 = Preset value for 1st infeed (_MID)
HUNDRED THOUSANDS: Machining type
0 = Compatibility (roughing and finishing)
1 = Roughing
2 = Finishing
3 = Roughing and finishing
ONE MILLION: Machining sequence for multistart thread
0 = In ascending order of threads
1 = In descending order of threads
Number of thread turns
Return distance (inc)
0 = A lift-off distance of 1 mm is used internally regardless of the active system (inch or
metric)
> 0 = Lift-off distance
First infeed, see _VARI (TEN THOUSANDS)
Thread changeover depth (only effective with "multiple start")
0 = Do not observe any thread changeover depth
> 0 = Observe thread changeover depth
Infeed slope as width (for interface only)
Programming cycles externally
18.1 Technology cycles
703