Examples - Siemens SINUMERIK 840D sl Function Manual

F1: Travel to fixed stop

6.3 Examples

6.3 Examples
Example 1: Travel to fixed stop with static synchronized actions
Travel to fixed stop (FXS) is initiated when requested via R parameter ($R1) in a static
synchronized action.
Program code
N10 IDS=1 WHENEVER
(($R1==1) AND
($AA_FXS[Y]==0)) DO
$R1=0 FXS[Y]=1
FXST[Y]=10
FA[Y]=200
POS[Y]=150
N11 IDS=2 WHENEVER
($AA_FXS[Y]==4) DO
FXST[Y]=30
N12 IDS=3 WHENEVER
($AA_FXS[Y]==1) DO
FXST[Y]=$R0
N13 IDS=4 WHENEVER
(($R3==1) AND
($AA_FXS[Y]==1)) DO
FXS[Y]=0
FA[Y]=1000 POS[Y]=0
N20 FXS[Y]=0 G0 G90 X0 Y0
N30 RELEASE(Y)
...
N60 GET(Y)
...
Note
Avoidance of multiple selection for FXS
To avoid a multiple selection, we recommend that prior to activating FXS, query either the
$AA_FXS==0 system variable or a user-specific flag. See above, program example N10
314
Comment
; Static synchronized action 1:
; R1==1 (FXS for Y requested) AND
; Avoidance of multiple selection
; $AA_FXS[Y]==0 (axis not at limit): =>
; reset $R1, activate FXS for Y
; Limit torque: 10%
; Axial feedrate Y: 200
; Positioning movement Y
; Static synchronized action 2:
; $AA_FXS[Y]==4 (limit detected): =>
; Limit torque: 30%
; Static synchronized action 3:
; $AA_FXS[Y]==1 (limit reached successfully): =>
; Limit torque: Value from R parameter $R0
; Static synchronized action 4:
; R3==1: Deselection of FXS for Y requested
; $AA_FXS[Y]==1 (limit reached successfully): =>
; Deselect FXS
; Positioning movement Y
; Set initial settings: FXS deselected,
X and Y at initial position
; Release Y for movements in synchronized actions
Include axis Y back into the path group
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions