Siemens SINUMERIK 840D Operating Manual page 297

Procedure
Parameters, G code program
PL Machining plane
Milling direction
RP Retraction plane
SC Safety clearance
F Feedrate
Parameters Description
∇ (roughing, plane-by-plane or helical)
Machining

∇∇∇ (finishing, plane-by-plane or helical)

∇∇∇ edge (edge finishing, plane-by-plane or helical)

Chamfering

Plane-by-plane
Machining type 
Machine circular pocket plane-by-plane
Helical

Machine circular pocket using helical type
Single position
Machining 
position
A circular pocket is machined at the programmed position (X0, Y0, Z0).
Position pattern

Several circular pockets are machined in a position pattern
(e.g. full circle, pitch circle, grid, etc.).
The reference points refer to the center point of the circular pocket:
X0 Reference point X – (for single position only)
Y0 Reference point Y – (for single position only)
Z0 Reference point Z – (for single position only)
∅ Diameter of pocket
Z1 Pocket depth (abs) or depth relative to Z0 (inc) – (only for ∇, ∇∇∇ and ∇∇∇
edge)
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
1. The part program or ShopMill program to be processed has been
created and you are in the editor.
2. Press the "Milling" softkey.
3. Press the "Pocket" and "Circular pocket" softkeys.
The "Circular Pocket" input window opens.
mm
mm
mm/min
Programming technological functions (cycles)
Parameters, ShopMill program
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant
cutting rate
8.2 Milling
mm/min
mm/rev
rev/min
m/min
Unit
mm
mm
mm
mm
mm
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