DELETE (FUN)¶

FUNCTION DELETE : STRING(255)

Deletes a number of characters from a string

DELETE (STR, LEN, POS) means: Delete LEN characters from STR, beginning with the character in the POS position.

POS = 0 or POS = 1, are both addressing the first character.

Bemerkung

The current implementation is unfortunately not correct for the case Pos=0. The implementation cannot be changed for compatibility reasons.
If Pos=0 is used, the parameter LEN is internally reduced by one!
It is generally recommended to use values in the range specified by IEC 61131-3. The smallest value for Pos is specified there as 1.

(* Example declaration *)
VarSTRING1 : STRING ;

(* Example in ST , result is 'SUSI' *)
VarSTRING1 := DELETE ('SUXYSI',2,3);

InOut:

Scope	Name	Type	Comment
Return	`DELETE`	`STRING(255)`	String remaining after deletion
Input	`STR`	`STRING(255)`	String to be modfied
	`LEN`	`INT`	Length of the partial string to be deleted, number of characters
	`POS`	`INT`	Position in `STR` after which the deletion starts. Counted from left, starting with 1