Siemens SINUMERIK 840Di sl - Position of Zero Points

Fundamental Geometrical Principles
1.2 Position of zero points
Fundamentals
22 Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
Working planes
The working planes are specified as follows in the NC program with G17, G18 and G19:
Level Designation Infeed direction
X/Y G17 Z
Z/X G18 Y
Y/Z G19 X
1.2 Position of zero points
The various origins (zero points) and reference positions are defined on the NC machine.
They are reference points
• for the machine to approach and
• for programming the workpiece dimensions.
The diagrams show the zero points and reference points for drilling/milling machines and
turning machines.
Milling:
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