Siemens SINUMERIK 840Di sl Operating Manual page 231

5
01/2008
Settable WO
Programmable WO
External WO
DRF offset
Frame
Frame components
Graphical display of
work offset
© Siemens AG 2008 All rights reserved.
SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition
You can activate a settable zero point offset in the part program you
have called with G54 to G57 and other G functions or with
$P_IFRAME=..
Basic work offset (basic frame): displayed like a settable WO.
You can use the programmable zero point offset $P_PFRAME=.. to
program an additional zero point offset for geometry and special axes
in the part program you have called.
The values of the programmed work offsets are deleted with end of
program or reset.
In addition to all the offsets which define the position of the workpiece
zero, an external work offset can be overlaid by means of the
handwheel (DRF offset) or from the PLC.
Differential Resolver Function: NC function which generates an
incremental work offset in Automatic mode in conjunction with an
electronic handwheel.
Frame is the conventional term for a geometrical expression that
describes an arithmetic rule, such as translation or rotation.
Frames are used to describe the position of a destination coordinate
system by specifying coordinates or angles starting from the current
workpiece coordinate system.
Possible frames:
• Basis frame
• Settable frames (G54...G599)
• Programmable frames
References: /PG/, Programming Guide Advanced
Frame components
A frame can consist of the following arithmetic rules:
• Work offset, TRANS, ATRANS
• Rotation, ROT, AROT
• Scale, SCALE, ASCALE
• Mirroring, MIRROR, AMIRROR
In the part program, all work offsets can be deselected non-modally
with G53.
See Subsection 4.2.3 Toggle between machine/workpiece coordinate
system (MCS/WCS)
Parameters operating area
5.6 Zero/work offset
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