Siemens SINUMERIK 808D User Manual

Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA6, 09/2017
37
Note
When you perform editing operations such as renumbering, searching, and saving of an external program file larger than
4 MB, a message appears reminding you that it will take a long time to complete the operations.
To ensure that the program editor works properly, you are recommended to edit an external program file smaller than
200 MB.
7.2.3
Understanding frequently used programming instructions
7.2.3.1
Inc h or metric dimensions (G70/G71)
Description
Programming example
G71:
With G71 at the program start, both the geometrical data
and the feedrates are evaluated as metric units.
N10 G17 G90 G54 G71
N20 T1 D1 M6
N30 S5000 M3 G94 F300
N40 G00
X100 Y100 Z5
N50 G01
Z-5
N60
Z5
N70 G00 Z500 D0
G70:
With G70 at the program start, the geometrical data is eval-
uated as inches, but the feedrates are not affected and
remain as metric units.
N10 G17 G90 G54
G70
N20 T1 D1 M6
N30 S5000 M3 G94 F300
N40 G00
X3.93 Y3.93 Z5
N50 G01
Z-0.787
N60
Z0.196
N70 G00
Z19.68 D0
For more information, see Section "Dimensions in metric units and inches: G71, G70, G710, G700 (Page 82)".
7.2.3.2
Definition of work offset (G54 to G59, G500, G90/G91)
Description
Illustration
Programming example
G500:
All absolute path data corresponds to
the current position. The position val-
ues are written in the G500 (basic) zero
offset.
N10 G17 G90
G500
G71
N20 T1 D1 M6
N30 S5000 M3 G94 F300
N40 G00
X50 Y50 Z5
N50 G01
Z-20
N60
Z5
N70 G00
Z500 D0
G54 to G59:
With G500 = 0, the offset for the work-
piece can be stored in the workpiece
offsets G54 to G59.
N10 G17 G90
G54
G71
N20 T1 D1 M6
N30 S5000 M3 G94 F300
N40 G00
X0 Y0 Z5
N50 G01
Z-20
N60
Z5
N70 G00
Z500 D0

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English