Settable Zero System (Szs); Tables - Siemens Sinumerik 840D sl Programming Manual

● Chained system frames
● Chained basic frames
References
Function Manual, Basic Functions; Axes, Coordinate Systems, Frames (K2)
2.4.4

Settable zero system (SZS)

Settable zero offset
The "settable zero system" (SZS) results from the basic zero system (BZS) through the settable
zero offset.
Settable zero offsets are activated in the NC program with the G commands G54...G57 and
G505...G599 as follows:
If no programmable coordinate transformations (frames) are active, then the "settable zero
system" is the workpiece coordinate system (WCS).
Programmable coordinate transformations (frames)
Sometimes it is useful or necessary within an NC program, to move the originally selected
workpiece coordinate system (or the "settable zero system") to another position and, if
required, to rotate it, mirror it and/or scale it. This is performed using programmable coordinate
transformations (frames).
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamental Geometrical Principles
2.4 Coordinate systems
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