Siemens SINUMERIK 840Di sl - 4.2.3 Switching over the machine;workpiece coordinate system (MCS;WCS)

Positional Data
3.5 Special turning functions
Fundamentals
96 Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
3.5.2 Position of workpiece
Function
While the machine zero is fixed, you can choose the position for the workpiece zero on the
longitudinal axis. The workpiece zero is generally located on the front or rear side of the
workpiece.
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Zero points
Both the machine zero and the workpiece zero are positioned on the center of rotation. The
settable offset on the X axis is thus zero.
coordinate system
The dimensions for the transverse axis are generally specified as diameter measurements
(double path dimension as compared to other axes).
The geometry axis to be used as a transverse axis is defined in machine data.