WFIND

The function WFIND searches for a part in WSTRING.
WFIND (STR1, STR2) means: Find the position of the first character of first occurrence of STR2 in STR1. If STR2 does not occur in STR1, then OUT := 0 applies.

VAR_INPUT
    STR1 : WSTRING(255);
    STR2 : WSTRING(255);
END_VAR

LD "SUXYSI"
WFIND "XY"
ST Var1 (*Ergebnis ist 3*)

Var1 := WFIND ("SUXYSI","XY");