Undercut Forms - Cycle940 - Siemens SINUMERIK 840D sl Programming Manual

Programming cycles externally
18.1 Technology cycles
No. Param Param
mask internal
_AMODE
26
18.1.32

Undercut forms - CYCLE940

Various undercuts can be programmed using the CYCLE940 cycle. In some cases, these
differ significantly regarding the parameterization.
The additional columns in the table indicate which parameters are required for which
undercut type. They correspond to the vertical selection softkeys in the cycle screen form:
● E: Undercut form E
● F: Undercut form F
● A-D: DIN thread undercut (forms A-D)
● T: Thread undercut (free definition of form)
Programming
CYCLE940(REAL _SPD, REAL _SPL, CHAR _FORM, INT _LAGE, REAL _SDIS,
REAL _FFP,INT _VARI, REAL _EPD, REAL _EPL, REAL _R1, REAL _R2, REAL
_STA, REAL _VRT, REAL _MID, REAL _FAL, REAL _FALX, REAL _FALZ, INT
_PITI, STRING[5] _PTAB, STRING[20] _PTABA, INT _DMODE, INT _AMODE)
696
Explanation
Alternative mode
UNITS: Dimensioning for top of groove (for interface only)
0 = At reference point
1 = Opposite the reference point
TENS: Depth
0 = Absolute
1 = Incremental
HUNDREDS: Dimensioning for width (for interface only)
0 = At outer diameter (top)
1 = At inner diameter (bottom)
THOUSANDS: Radius/chamfer 1 (_RCO1)
0 = Radius
1 = Chamfer
TEN THOUSANDS: Radius/chamfer 2 (_RCI1)
0 = Radius
1 = Chamfer
HUNDRED THOUSANDS: Radius/chamfer 3 (_RCI2)
0 = Radius
1 = Chamfer
MILLIONS DIGIT: Radius/chamfer 4 (_RCO2)
0 = Radius
1 = Chamfer
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
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