Siemens Sinumerik 840D sl Programming Manual page 593

Example of laser output control
One of the possible applications of polynomial definition is the laser output control.
Laser output control means:
Influencing the analog output in dependence on, for example, the path velocity.
Program code
$AC_FCTLL[1]=0.2
$AC_FCTUL[1]=0.5
$AC_FCT0[1]=0.35
$AC_FCT1[1]=1.5EX-5
STOPRE
ID=1 DO $AC_FCTUL[1]=$A_INA[2]*0.1 +0.35
ID=2 DO SYNFCT(1,$A_OUTA[1],$AC_VACTW)
Note
The polynomial defined above is used with SYNFCT.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Motion synchronous actions
10.4 Actions in synchronized actions
Comments
; Definition of a polynomial
coefficients
; Change upper limit online.
; Depending on the path velocity
(stored in $AC_VACTW) the
laser power control is controlled
via analog output 1
593