Siemens sinumerik 840D sl Operating Manual page 352

Programming technology functions (cycles)
8.4 Milling
Parameters, G code program
PL Machining plane
Milling direction
RP Retraction plane
SC Safety clearance
F Feedrate
Parameters Description
Face C
Machining 
surface
Face Y

(only for
ShopTurn)
FZ Depth infeed rate
(only for G code)
∇ (roughing)
Machining 
∇∇∇ (finishing)

∇∇∇ edge (edge finishing)

Chamfering

Single position
Machining 
position
A multiple edge is milled at the programmed position (X0, Y0, Z0).
Position pattern

Several multiple edges are milled at the programmed position pattern (e.g. pitch
circle, grid, line).
The positions refer to the reference point:
X0 Reference point X – (only for single position)
Y0 Reference point Y – (only for single position)
Z0 Reference point Z – (only for single position)
∅ Diameter of blank spigot
N Number of edges
SW or L Width across flats or edge length
α0 Angle of rotation
R1 or FS1 Rounding radius or chamfer width
Z1 Multi-edge depth (abs) or depth in relation to Z0 (inc) - (only for ∇, ∇∇∇ and ∇∇∇ edge)
Maximum plane infeed
DXY 
Maximum plane infeed as a percentage of the milling cutter diameter

- (only for ∇ and ∇∇∇)
DZ Maximum depth infeed - (only for ∇ and ∇∇∇)
UXY Plane finishing allowance - (only for ∇, ∇∇∇ and ∇∇∇ edge)
UZ Depth finishing allowance – (only for ∇ and ∇∇∇)
FS Chamfer width for chamfering - (for chamfering only)
ZFS Insertion depth of tool tip (abs or inc) - (for chamfering only)
352
Parameters, ShopTurn program
T
D
mm F
mm S / V
mm/min
Tool name
Cutting edge number
Feedrate
Spindle speed or constant
cutting rate
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
mm/min
mm/rev
rpm
m/min
Unit
mm/min
mm (in)
mm (in)
mm (in)
mm
Degrees
mm
mm
%
mm
mm
mm
mm
mm
%
Turning