P5: Oscillation - only 840D sl
11.3 Oscillation controlled by synchronized actions
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
657
Explanation of system variables:
$AA_IM[Z]: Current position of oscillating axis Z in the MCS
$SA_OSCILL_REVERSE_POS1[Z]: Position of the reversal point1 of the oscillation axis
$AA_OVR[X]: Axial override of the infeed axis
$AA_OVR[Z]: Axial override of the oscillation axis
Explanation of key words:
WHENEVER ... DO ... always when the condition is fulfilled, then ...
Infeed
The absolute infeed value is defined by the POSP instruction (see Section "Definition of
infeeds POSP (Page 663)").
Assignment
The assignment between the oscillation axis and the infeed axis is defined by the OSCILL
instruction (see Section "Assignment of oscillation and infeed axes OSCILL (Page 662)").
11.3.2 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 "Figure 11-1 Arrangement
of oscill
ation and infeed axes plus terms (Page 654)").
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