Siemens sinumerik 840d Programming Manual page 410

Oscillation
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11.2 Oscillation controlled via synchronized actions
840D 840D
NCU 571 NCU 572
NCU 573
Online evaluation of reversal point
If there is a main run variable coded with $$ on the
right of the comparison, then the two variables are
evaluated and compared with one another
continuously in the IPO cycle.
Please refer to Section "Motion-synchronized
actions" for more information.
Restart oscillation movement
This synchronized action is used to continue the
oscillating movement when the partial infeed
movement is complete.
The following instructions are used subject to the
above assumptions:
WHENEVER $AA_DTEPW[X]==0 DO $AA_OVR[Z]= 100
Whenever
equal to
then
11-410
FM-NC 810D 840Di
the distance-to-go for the partial infeed on infeed axis X in the WCS
zero
set the axial override of the oscillating axis to 100%.
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
08.97
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