Settable Zero System (Szs) - Siemens SINUMERIK 840D sl Programming Manual

Fundamentals
2.1 Fundamental Geometrical Principles
Basic offset
The basic offset describes the coordinate transformation between BCS and BZS. It can be
used, for example, to define the palette zero.
The basic offset comprises:
● External work offset
● DRF offset
● Overlaid movement
● Chained system frames
● Chained basic frames
2.1.4.4

Settable zero system (SZS)

Settable work offset
The "settable zero system" (SZS) is obtained from the basic zero system (BZS) as a result of
the settable work offset.
Settable work offsets are activated in the NC program with the G commands G54 ... G57 and
G505 ... G599.
If no programmable coordinate transformations (frames) are active, then the "settable zero
system" is the workpiece coordinate system (WCS).
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Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming