HEIDENHAIN iTNC 530 (340 422) ISO programming - Manual (Page 384)

384 8 Programming: Cycles
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DATUM SETTING (Cycle G247)
With the Cycle DATUM SETTING, you can activate a datum defined in
a preset table as the new datum.
Effect
After a DATUM SETTING cycle definition, all of the coordinate inputs
and datum shifts (absolute and incremental) are referenced to the new
preset.
U U U U Number for datum?: Enter the number of the datum to
be activated from the preset table
Status displays
In the additional status display, the following data from the datum
table are shown (see “Coordinate transformations” on page 41):
n
Name and path of the active datum table
n Active datum number
n Comment from the DOC column of the active datum number
In addition, the active preset number is shown in the large status
window behind to the datum symbol.
Example: NC block
N13 G247 DATUM SETTING
Q339=4 ;DATUM NUMBER
Z
Z
X
X
Y
Y
When activating a datum from the preset table, the TNC
resets all coordinate transformations that were activated
with the following cycles:
n
Cycle G53/G54, Datum Shift
n Cycle G28, Mirroring
n Cycle G73, Rotation
n Cycle G72, Scaling
However, the coordinate transformation from Cycle G80,
Tilted Working Plane, remains active.
The TNC sets the preset only in the axes that are defined
with values in the preset table. The datums of axes
marked with – remain unchanged.
Cycle G247 is not functional in Test Run mode.