Siemens SINUMERIK 802D sl Programming Manual page 210

Terms
Z
Zero offset
B-210
Specification of a new reference point for a coordinate system
through reference to an existing zero and a --> frame.
1. Settable
SINUMERIK 840D: A parameterizable number of settable zero
offsets is available for each CNC axis. Each of the zero offsets
can be selected by G functions and selection is exclusive.
2. External
All offsets which define the position of the workpiece zero can be
overlaid with an external zero offset
-- defined by handwheel (DRF offset) or
-- defined by the PLC.
3. Programmable
Zero offsets can be programmed for all path and positioning axes
by means of the TRANS instruction.
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) - - 04.07 Edition
© Siemens AG 2007 All rights reserved
04.07