Siemens SINUMERIK 840D Operating Manual page 354

Programming technological functions (cycles)
8.3 Contour milling
Parameters, G code program
PRG Name of the program to be generated
PL Machining plane
Milling direction 

RP Retraction plane
SC Safety clearance
F Feedrate
Parameter Description
TR Reference tool Tool, which is used in the "solid machining" machining step. This is
used to determine the residual corners.
D Cutting edge number
Z0 Reference point Z
Z1 Pocket depth (abs) or depth referred to Z0 (inc)
Maximum plane infeed
DXY 
Maximum plane infeed as a percentage of the milling cutter diameter

DZ Maximum depth infeed
Lift mode Lift mode before new infeed
If the machining operation requires several points of insertion, the retraction height can
be programmed:
To retraction plane

Z0 + safety clearance

When making the transition to the next insertion point, the tool returns to this height. If
there are no elements larger than Z0 in the pocket area, "Z0 + safety clearance" can be
selected as the lift mode.
354
Climbing
Conventional
mm
mm
mm/min
Parameters, ShopMill program
T Tool name
F Feedrate
S / V Spindle speed or constant
cutting rate
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
mm/min
mm/rev
rpm
m/min
Unit
mm
mm
mm
%
mm
mm
mm
Milling