Siemens SINUMERIK 840D sl Operating Manual page 332

Programming technology functions (cycles)
8.2 Rotate
Parameters, G code program (undercut, form F)
PL Machining plane
SC Safety clearance
F Feedrate
Parameter
Position
X0
Z0
X1
Z1
VX
* Unit of feedrate as programmed before the cycle call
332
mm
*
Description
Form F machining position:
Undercut size according to DIN table:
e.g.: F0.6 x 0.3 (undercut form F)
Reference point X ∅
Reference point Z
Allowance in X ∅ (abs) or allowance in X (inc)
Allowance in Z (abs) or allowance in Z (inc) – (for undercut form F only)
Cross feed ∅ (abs) or cross feed (inc)
Parameters, ShopTurn program (undercut, form F)
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant
cutting rate
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
mm/rev
rpm
m/min
Unit
mm
mm
mm
mm
mm
Turning