Program Header - Siemens SINUMERIK 840D sl Operating Manual

7.6

Program header

In the program header, set the following parameters, which are effective for the complete
program.
Parameters
Measurement unit
Work offset
Blank
XA
N
SW / L
W
L
XA
XI
ZA
ZI
ZB
Retraction
XRA
XRI
ZRA
XRA
XRI
Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Description
The setting of the measurement unit in the program header only refers to the
position data in the actual program.
All other data, such as feedrate or tool offsets, are entered in the unit of measure
that you have set for the entire machine.
The work offset in which the zero point of the workpiece is saved.
You can also delete the default value of the parameter if you do not want to
specify a work offset.
Define the form and dimensions of the workpiece:
Cylinder

Outer diameter ∅
Polygon

Number of edges
Width across flats
Edge length
Centered cuboid

Width of blank
Length of blank
Tube

Outer diameter ∅
Inner diameter ∅ (abs) or wall thickness (inc)
Initial dimension
Final dimension (abs) or final dimension in relation to ZA (inc)
Machining dimension (abs) or machining dimension in relation to ZA (inc)
The retraction area indicates the area outside of which collision-free traversing of
the axes must be possible.
simple

Retraction plane X external ∅ (abs) or
retraction plane X referred to XA (inc)
- only for "pipe" blank
Retraction plane X internal ∅ (abs) or
retraction plane X referred to XI (inc)
Retraction plane Z front (abs) or
retraction plane Z referred to ZA (inc)
extended - not for a "pipe" blank

Retraction plane X external ∅ (abs) or
retraction plane X referred to XA (inc)
Retraction plane X internal ∅ (abs) or
retraction plane X referred to XI (inc)
Creating a ShopTurn program
7.6 Program header
Unit
mm
inch
mm
mm
mm
mm
mm
mm
mm
mm
237