Infeed In Reversal Point Range - Siemens SINUMERIK 840D sl Function Manual

P5: Oscillation - only 840D sl
12.3 Oscillation controlled by synchronized actions
12.3.2

Infeed in reversal point range

Function
Reversal point range 1:
No infeed takes place provided the oscillation axis has not reached the reversal point range
(position at reversal point 1 plus contents of variables ii1). This applies on the condition that
reversal point 1 is set to a lower value than reversal point 2. If this is not the case, then the
condition must be changed accordingly.
Application
Reversal point range 1:
The purpose of the synchronized action is to prevent the infeed movement from starting until
the oscillation movement has reached reversal point range 1.
See the figure in Chapter "Controlling Oscillation via Synchronous Actions".
Programming
Reversal point range 1:
WHENEVER $AA_IM[Z] > $SA_OSCILL_REVERSE_POS1[Z] + ii1
DO $AA_OVR[X] = 0
Explanation of system variables:
$AA_IM[Z]: Current position of oscillating axis Z
$SA_OSCILL_REVERSE_POS1[Z]: Position of reversal point 1 of the oscillation axis
$AA_OVR[X]: Axial override of the infeed axis
ii1: Magnitude of reversal range (user Variable)
Explanation of key words:
WHENEVER ... DO ... Whenever condition is fulfilled, then ...
Function
Reversal point range 2:
The infeed axis stops until the current position (value) of the oscillation axis is lower than the
position at reversal point2 minus the contents of variable ii2. This applies on condition that
the setting for reversal point position 2 is higher than that for reversal point position 1. If this
is not the case, then the condition must be changed accordingly.
Application
Reversal point range 2:
The purpose of the synchronized action is to prevent the infeed movement from starting until
the oscillation movement has reached reversal point range 2.
See the figure in Chapter "Controlling Oscillation via Synchronous Actions".
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Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions