EXIT statement

The EXIT statement is commonly used within an IF statement inside a FOR, WHILE, or REPEAT block. EXIT statements are not compliant with the IEC-61131-3 standard, and we recommend not using them.
Properties of EXIT statement
Item
Description
Name
EXIT
Meaning
Exits from a FOR, WHILE, or REPEAT statement.
Syntax
EXIT;

Example

(* ST program using EXIT statement *)
(* this program searches for a character in a string *)

length := mlen (message);
found := NO;
FOR index := 1 TO length BY 1 DO
code := ascii (message, index);
IF (code = searched_char) THEN
found := YES;
EXIT;
END_IF;
END_FOR;
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