Siemens SINUMERIK 840D sl Function Manual page 684

K2: Axis Types, Coordinate Systems, Frames
10.4 Coordinate systems
Starting from the machine coordinate system, the various coordinate systems are defined
using kinematic transformation and frames:
● MCS ⇒ BCS: Kinematic transformation
If kinematic transformation is not active, then the BCS is the same as the MCS.
● BCS ⇒ BZS: Basic frame
● BZS ⇒ SZS: Activated adjustable FRAME G54...G599
● SZS ⇒ WCS: Programmable FRAME
● The program to machine the workpiece is written in WCS.
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions