Stop Oscillation Movement At The Reversal Point - Siemens SINUMERIK 840D sl Function Manual

P5: Oscillation - only 840D sl
12.3 Oscillation controlled by synchronized actions
12.3.4

Stop oscillation movement at the reversal point

Function
Reversal point 1:
Every time the oscillation axis reaches reversal position 1, it must be stopped by means of
the override and the infeed movement started.
Application
The synchronized action is used to hold the oscillation axis stationary until part infeed has
been executed. This synchronized action can be omitted if the oscillation axis need not wait
at reversal point 1 until part 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_POS1[oscillation axis]
DO $AA_OVR[oscillation axis] = 0 $AA_OVR[infeed axis] = 100
Explanation of system variables:
$AA_IM[oscillation axis]: Current position of oscillation axis
$SA_OSCILL_REVERSE_POS1[oscillation axis]: Reversal point of the oscillation axis
$AA_OVR[oscillation axis]: Axial override of the oscillation axis
$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 part infeed has
been executed. This synchronized action can be omitted if the oscillation axis need not wait
at reversal point 2 until part 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.
828
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions