Siemens sinumerik 840D sl Operating Manual page 258

Programming technology functions (cycles)
8.1 Drilling
Procedure
Parameters, G code program
PL Machining plane
RP Retraction plane
SC Safety clearance
Parameters Description
Single position
Machining 
position (only
Drill hole at programmed position
for G code)
Position pattern

Position with MCALL
Z0 (only for G Reference point Z
code)
Face C
Machining 
surface
Face Y

Peripheral surface C

(only for
Peripheral surface Y

ShopTurn)
Please note that when machining in the face C and peripheral surface C planes,
clamping only remains active for the drilling operation. On the other hand, when
machining in the face Y and peripheral surface Y planes, clamping is modal, i.e. it
remains active until the machining plane is changed.
Chip removal
Machining

The drill is retracted from the workpiece for stock removal.
Chipbreaking

The drill is retracted by the retraction distance V2 for chipbreaking.
Shank (drilling depth in relation to the shank)
Drilling depth 
The drill is inserted into the workpiece until the drill shank reaches the value
programmed for Z1. The angle entered in the tool list is taken into account.
Tip (drilling depth in relation to the tip)

The drill is inserted into the workpiece until the drill tip reaches the value
programmed for Z1.
Note: If it is not possible to define an angle for the drill in the tool management, it will
not be possible to select tip or shank (always tip, 0 field)
258
1. The part program or ShopTurn program to be processed has been
created and you are in the editor.
2. Press the "Drilling" softkey.
3. Press the "Deep-hole drilling" softkey.
The "Deep-hole Drilling" input window opens.
mm
mm
Parameters, ShopTurn program
T Tool name
D Cutting edge number
F Feedrate
S / V Spindle speed or constant
cutting rate
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
mm/min
mm/rev
rpm
m/min
Unit
mm
Turning