Siemens SINUMERIK 840D Programming Manual page 307

04.00
A
W
Workpiece
Workpiece contour
Workpiece coordinate
system
Workpiece origin
X
Y
Z
Zero offset
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Cycles (PGZ) - 04.00 Edition
Part to be created/machined by the machine tool.
Setpoint contour of the -> workpiece to be created/machined.
The starting position of the workpiece coordinate system is the ->
workpiece origin. When programming in the workpiece coordinate
system, the dimensions and directions refer to this system.
The workpiece origin is the starting point for the -> workpiece
coordinate system. It is defined by the distance to the machine origin.
Specification of a new reference point for a coordinate system through
reference to an existing origin and a -> frame.
Settable
SINUMERIK FM-NC: Four independent zero offsets can be selected
for each CNC axis.
SINUMERIK 840D: A configurable number of settable zero offsets is
available for each CNC axis. The offsets - which are selected by
means of G functions - take effect alternately.
External
In addition to all the offsets which define the position of the workpiece
zero, it is possible to superimpose an external zero offset
– by means of a handwheel (DRF offset) or
– from the PLC.
Programmable
It is possible to program zero offsets for all path and positioning axes
by means of the TRANS statement.
Appendix
A
Terms
A-307