FUNCTION FC100 : void

VAR_OUTPUT
OUT:BOOL;
END_VAR

VAR_TEMP
i:INT;
t:INT;
j:INT;
END_VAR

// Statement Section
i:=0;
FOR j:= 0 TO 576 BY 1 DO
i:=j MOD 8;
t:=J/8;
IF(db196.dx[t,i]&db197.dx[t,i])THEN //DB197为“alarm bell_word”DB块
out:=true;
END_IF;
END_FOR;
END_FUNCTION