Oscillation Movement Restarting - Siemens SINUMERIK 840D Function Manual

$AA_OVR[infeed axis ]: Axial override of the infeed axis
Function
Reversal point 2:
Every time the oscillation axis reaches reversal position 2, it must be stopped by means of the
override 0 and the infeed movement started.
Application
The synchronized action is used to hold the oscillation axis stationary until partial infeed has
been executed. This synchronized action can be omitted if the oscillation axis need not wait at
reversal point 2 until partial infeed has been executed. At the same time, this synchronized
action can be used to start the infeed movement if this has been stopped by a previous
synchronized action which is still active.
Programming
WHENEVER $AA_IM[oscillation axis] ==
$SA_OSCILL_REVERSE_POS2[oscillation axis]
DO $AA_OVR[oscillation axis] = 0
Explanation of system variables
● $AA_IM[ oscillation axis ]: Current position of oscillation axis
● $SA_OSCILL_REVERSE_POS2[ oscillation axis ]: Reversal point 2 of the
oscillation axis
● $AA_OVR[ oscillation axis ]: Axial override of the oscillation axis
● $AA_OVR[ infeed axis ]: Axial override of the infeed axis
15.3.5

Oscillation movement restarting

Function
The oscillation axis is started via the override whenever the distance-to-go for the currently
traversed path section of the infeed axis = 0, i.e. partial infeed has been executed.
Application
The purpose of this synchronized action is to continue the movement of the oscillation axis on
completion of the part infeed movement. If the oscillation axis need not wait for completion of
partial infeed, then the motion-synchronous action with which the oscillation axis is stopped at
the reversal point must be omitted.
Programming
WHENEVER $AA_DTEPW[infeed axis] == 0
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
15.3 Oscillation controlled by synchronized actions
$AA_OVR[infeed axis] = 100
P5: Oscillation
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