Siemens SINUMERIK 840D Operating Manual page 322

Programming technological functions (cycles)
8.2 Milling
Parameters Description
Machining position:
(only for G code)
Single position

Position pattern (MCALL)

The positions refer to the center point:
X0 Reference point X – (for single position only)
Y0 Reference point Y – (for single position only)
Z0 Reference point Z
(only for G code)
Z1 End point of the thread (abs) or thread length (inc)
Table Thread table selection:
Without

ISO metric

Whitworth BSW

Whitworth BSP

UNC

Selection - (not Selection of table value: e.g.
for table
M3; M10; etc. (ISO metric)

"Without")
W3/4"; etc. (Whitworth BSW)

G3/4"; etc. (Whitworth BSP)

N1" - 8 UNC; etc. (UNC)

P Display of the thread pitch for the parameter input in the input field "Table" and
"Selection".
P Pitch ...
- (selection
in MODULUS: For instance, used for worms that mesh with a gearwheel.

option only for
per inch: Used with pipe threads, for example.

table selection
When entered per inch, enter the integer number in front of the decimal point in the
"without")
first parameter field and the figures after the decimal point as a fraction in the
second and third field.
in mm/rev

in inch/rev

The tool used depends on the thread pitch.
∅ Nominal diameter
Example: Nominal diameter of M12 = 12 mm
H1 Thread depth
αS Starting angle
rev Finishing allowance in X and Y - (only for ∇)
322
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
Unit
mm
mm
mm
mm
MODULE
Turns/"
mm/rev
inch/rev
MODUL
Turns/"
mm/rev
in/rev
mm
mm
Degrees
mm
Milling