Siemens SINUMERIK 840D Operator's Manual page 166

A
Appendix
B Terms
Workpiece zero
X
Y
Z
Zero offset
A-166
The workpiece zero is the starting point for the -> workpiece
coordinate system. It is defined in terms of the distance from the
machine zero.
Specification of a new reference point for a coordinate system through
reference to an existing zero point and a -> frame.
1. adjustable
SINUMERIK FM-NC: Four independent zero offsets can be
selected for each CNC axis.
SINUMERIK 840D: A configurable number of adjustable zero
offsets is available for each CNC axis. The offsets which can be
selected via G functions are effective on an alternating basis.
2. external
In addition to all displacements which define the position of the
workpiece zero point, an external zero offset can be superimposed
via
- a handwheel (DRF offset) or
- the PLC.
3. programmable
Zero offsets are programmable for all path and positioning axes
with the TRANS command.
SINUMERIK 840D/840Di/810D Operator's Guide Handheld Terminal 6 (BAH) - 03.04 Edition
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03.04
 Siemens AG, 2004. All rights reserved.