Siemens SINUMERIK 840D Operating Manual page 307

Parameter Description
Reference point Position of the reference point:
(lefthand edge)

(inside left)

(center)

(inside right)

(righthand edge)

∇ (roughing)
Machining 
∇∇∇ (finishing)

∇∇∇ edge (edge finishing)

Chamfering

Single position
Machining 
position
A slot is milled at the programmed position (X0, Y0, Z0).
Position pattern

Several slots are milled at the programmed position pattern (e.g. pitch circle, grid,
line).
The positions refer to the reference point:
X0 Reference point X – (for single position only)
Y0 Reference point Y – (for single position only)
Z0 Reference point Z
W Groove width
L Groove length
α0 Angle of rotation
Z1 Slot depth (abs) or depth relative 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 ∇∇∇ Rand)
UXY Plane finishing allowance - (only for ∇, ∇∇∇ and ∇∇∇ edge)
UZ Depth finishing allowance (slot base) - (only for ∇ and ∇∇∇)
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Programming technological functions (cycles)
8.2 Milling
Unit
mm
mm
mm
mm
mm
Degrees
mm
mm
%
mm
mm
mm
307