Workpiece Coordinate System (Wcs); What Is The Relationship Between The Various Coordinate Systems - Siemens SINUMERIK 840D sl Programming Manual

Fundamental Geometrical Principles
1.4 Coordinate systems
1.4.5

Workpiece coordinate system (WCS)

The geometry of a workpiece is described in the workpiece coordinate system (WCS). In
other words, the data in the NC program refer to the workpiece coordinate system.
The workpiece coordinate system is always a Cartesian coordinate system and assigned to a
specific workpiece.
1.4.6

What is the relationship between the various coordinate systems?

The example in the following figure should help clarify the relationships between the various
coordinate systems:
①
②
③
④
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A kinematic transformation is not active, i.e. the machine coordinate system and the basic
coordinate system coincide.
The basic zero system (BZS) with the pallet zero result from the basic offset.
The "settable zero system" (SZS) for Workpiece 1 or Workpiece 2 is specified by the settable
zero offset G54 or G55.
The workpiece coordinate system (WCS) results from programmable coordinate
transformation.
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
Fundamentals