Siemens Sinumerik 840D sl Programming Manual page 72

Flexible NC programming
1.6 Variable minimum, maximum and range (MINVAL, MAXVAL and BOUND)
Note
MINVAL, MAXVAL, and BOUND can also be programmed in synchronized actions.
Note
Behavior if values are equal
If the values are equal MINVAL/MAXVAL are set to this equal value. In the case of BOUND the
value of the variable to be tested is returned again.
Example
Program code
DEF REAL rVar1=10.5, rVar2=33.7, rVar3, rVar4, rVar5, rValMin, rValMax, rRetVar
rValMin=MINVAL(rVar1,rVar2)
rValMax=MAXVAL(rVar1,rVar2)
rVar3=19.7
rRetVar=BOUND(rVar1,rVar2,rVar3)
rVar3=1.8
rRetVar=BOUND(rVar1,rVar2,rVar3)
rVar3=45.2
rRetVar=BOUND(rVar1,rVar2,rVar3)
72
Comments
; rValMin is set to value 10.5.
; rValMax is set to value 33.7.
; rVar3 is within the limits, rRetVar is set to 19.7.
; rVar3 is below the minimum limit, rRetVar is set to
10.5.
; rVar3 is above the maximum limit, rRetVar is set to
33.7.
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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