Lenze PLC Designer PLC Designer (R2-x) Manuel d'utilisateur télécharger pdf (Page 496)

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IEC Operators and additional norm extending functions

494 DMS 3.2 EN 02/2011 TD29 

9.9.8 STRING_TO Conversions

Converting from the variable type STRING to a different type:

The operand from the STRING type variable must contain a value that is valid in the

target variable type, otherwise the result will be 0.

Examples in IL:

STRING_TO_BOOL

(* Result is TRUE *)

STRING_TO_WORD

(* Result is 0 *)

LD 't#127ms'

STRING_TO_TIME

(* Result is T#127ms *)

Examples in ST:

b :=STRING_TO_BOOL('TRUE'); (* Result is TRUE *)

w :=STRING_TO_WORD('abc34'); (* Result is 0 *)

t :=STRING_TO_TIME('T#127ms'); (* Result is T#127ms *)

Examples in FBD:

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Lenze PLC Designer PLC Designer (R2-x) Manuel d'utilisateur Page 496