Siemens SINUMERIK 840D sl Function Manual page 151

N2500
N2700 ID=11 DO $$AA_OVR[CACH]=
$AA_IM[CASW]
N2900 WAITP(CACH)
N3000 ID=7 EVERY $R4==1 DO
MOV[CACH]=1 FA[CACH]=R5
N3100 ID=8 EVERY $R4==0 DO
MOV[CACH]=0
N3200 STOPRE
N3300 R90=$AA_COUP_ACT[CASW]
N3400 MSG("Override table CASW activated with LEADON "<<R90<<", further ENDE with NC-
START")
N3500 M00
N3600 MSG()
N3700 STOPRE
N3800 R1=0
N3900 R2=0
N4000 R3=0
N4100 R4=0
N4200 M30
Expansion options
The example above can be expanded by the following components:
● Introduction of a Z axis to move the grinding wheel or workpiece from one non-circular
operation to the next on the same shaft (cam shaft).
● Table switchovers, if the cams for inlet and outlet have diferent contours.
ID = ... <Condition> DO LEADOF(XACH, CACH) LEADON(XACH, CACH, <new
table number>)
● Dressing of grinding wheel by means of online tool offset acc. to Subsection "Online tool
offset FTOC".
Synchronized actions
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
4.7 Axis couplings via synchronized actions
; *** Control override of the CACH from position
; CASW with ID 10 ***
; Assign "axis position" CASW to OVR CACH
; Start as endless rotating rotary axis
; Stop as endless rotating rotary axis
; State of the coupling for CASW for checking
; *** NC HALT ***
; Preprocessing stop
; Stop with ID=2 CASW axis as
; endless rotating rotary axis
; LEADOF with ID=6 FA XACH
; and leading axis CACH
; LEADOF TAB1 CASW with ID=7/8 CACH
; to CASW override table
; Stop axis as endless rotating rotary axis
; , ID=4 CACH
Examples
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