Siemens SINUMERIK 840D sl Programming Manual page 686

Programming cycles externally
18.1 Technology cycles
No. Param Param
mask internal
8 UZ _FALD
FX _FFP1
9
10 FZ _FFD
11 _VARI
12 _RL
13 _AS1
L1 _LP1
14
15 FZ _FF3
686
Explanation
Finishing allowance depth (inc), allowance at base (enter without sign)
Feedrate on contour
Feedrate for depth infeed (or spatial infeed)
Machining type
UNITS: Machining
1 = Roughing
2 = Finishing
5 = Chamfer
TENS:
0 = Intermediate travel with G0
1 = Intermediate travel with G1
HUNDREDS:
0 = Retraction at the end of contour to reference point
1 = Retraction at the end of contour to reference point +_SDIS
2 = Retraction by _SDIS at the end of contour
3 = No retraction at the end of contour, approach next start point with contour feed
THOUSANDS: Reserved
TEN THOUSANDS:
0 = Machine contour forward
1 = Machine contour backward
Restrictions with backward machining:
Max 170 contour elements (including chamfers or rounding)

Only values in the (X/Y) and F planes are evaluated

Machining direction
40 = Center of contour (G40, approach and retract: straight line or vertical)
41 = Left of contour (G41, approach and retract: straight line or circle)
42 = Right of contour (G42, approach and retract: straight line or circle)
Contour approach movement
UNITS:
1 = Straight line
2 = Quarter-circle
3 = Semi-circle
4 = Vertical approach and retraction
TENS:
0 = Last movement, in the plane
1 = Last movement, spatial
Approach path or approach radius (inc; enter without sign)
Feedrate for intermediate paths (G94/G95 as to contour)
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
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