Siemens SINUMERIK 840D sl Operating Manual page 359

Parameters, G code program (undercut, thread)
PL Machining plane
SC Safety clearance
F Feedrate
Parameters
Machining
Machining
direction
Position
X0
Z0
X1
Z1
R1
R2
α
VX
D
U or UX
UZ
* Unit of feedrate as programmed before the cycle call
Turning
Operating Manual, 05/2017, A5E40868721
mm
*
Description
● ∇ (roughing)
● ∇∇∇ (finishing)
● ∇ + ∇∇∇ (roughing and finishing)
● Longitudinal
● Parallel to the contour
Machining position:
Reference point X ∅
Reference point Z
Undercut depth referred to X ∅ (abs) or undercut depth referred to X (inc)
Allowance Z (abs or inc)
Rounding radius 1
Rounding radius 2
Insertion angle
Cross feed ∅ (abs) or cross feed (inc) - (only for ∇∇∇ and ∇ + ∇∇∇)
Maximum depth infeed – (only for ∇ and ∇ + ∇∇∇)
Finishing allowance in X or finishing allowance in X and Z – (only for ∇ and ∇ +
∇∇∇)
Finishing allowance in Z – (only for UZ, ∇ and ∇ + ∇∇∇)
Programming technology functions (cycles)
Parameters, ShopTurn program (undercut, thread)
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant cutting
rate
10.2 Rotate
mm/rev
rpm
m/min
Unit
mm
mm
mm
mm
mm
mm
Degrees
mm
mm
mm
359