Lenze DDS v2.3 - Manual (Page 301)

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IEC 61131-3 Standard functions
14-9
l
DDS EN 2.3
14.3.7 DELETE
Deletes a segment from a string from a specific position
•
STR1 is of type STRING, LEN and POS of type INT, the return value of the function type
STRING .
•
DELETE(STR, L, P) means: Delete L characters from STR, starting with the P th.
Examples
IL
ST FBD
LD ’SUXYSI’
DELETE 2,2
ST Var1
(* Var1=’SUSI’ *) Var1:=DELETE
(’SUXYSI’,2,2);
14.3.8 REPLACE
Replaces a segment within a string with another string
•
STR1 and STR2 are of type STRING, LEN and POS of type INT, the return value of the
function type STRING.
•
REPLACE(STR1, STR2, L, P) means: Replace L characters from STR1 with STR2
starting with the P-th character.
Examples
IL
ST FBD
LD ’SUXYSI’
REPLACE ’K’,2,2
ST Var1
(* Var1=’SKYSI’ *) Var1:=REPLACE
(’SUXYSI’,’K’,2,2);
14.3.9 FIND
Looks for a segment within a string
•
STR1 and STR2 are of type STRING, the return value of the function type INT.
•
FIND (STR1, STR2) means: Find the position of the first character of the first occurrence
of STR2 in STR1.
•
If STR2 does not occur in STR1 , the return value will be :=0.
Examples
IL
ST FBD
LD ’SUXYSI’
FIND ’XY’
ST Var1 (* Var1=3 *) Var1:=FIND(’SUXYSI’,’XY’);
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