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

Oscillation (P5)
12.3 Oscillation controlled by synchronized actions
One-sided infeed
to U1
to U2
range U1
range U2
These options are described in the chapter "Infeed in Reversal Point 1 or 2" and the chapter
"Infeed in the Reversal Range".
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.
818
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions