Siemens sinumerik 840d Programming Manual page 259

08.97
7
840D
NCU 572
NCU 573
Preconditions and limitations
1. Geometry axis switchover is not possible with:
− active transformation,
− active spline interpolation,
− active tool radius compensation,
− active tool fine compensation.
2. If a geometry axis and channel axis have the
same name, the geometry axis cannot be
switched.
3. None of the axes involved in the switchover must
also be involved in an action that could continue
beyond the block limit, as is possible with
positioning axes of type A or following axes.
4. The GEOAX command can only be used to
replace geometry axes with the ones that already
existed on activation (i.e. it cannot be used to
define new axes).
5. Replacement using the GEOAX command during
preparation of the contour table (CONTPRON,
CONTDCON) produces an alarm.
Deactivating the switchover
The command GEOAX() calls the basic
configuration of the geometry axis group.
The basic configuration automatically becomes
active after POWER ON and when switching over to
the operating mode reference point approach.
Additional notes
Switchover procedure and tool length
compensation
An active tool length compensation remains active
after the switchover. It will affect any newly assigned
axes or geometry axes whose position has been
switched. When the first travel command is given for
these geometry axes, the resulting path to be
traversed is therefore the sum of the tool length
compensation and the programmed travel path.
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
7.8 Switchable geometry axes, GEOAX
810D 840Di
Transformations
(Programming Guide, Fundamentals:
Chapter 8)
(Programming Guide, Fundamentals:
Chapter (8)
7
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