FUNCTION_BLOCK Zzz

VAR_INPUT
	temperature : REAL; RANGE := ( 100 .. 150 );
END_VAR

VAR_OUTPUT
	out : REAL;
END_VAR

FUZZIFY temperature
	TERM low := SIGM -4 125;
	TERM high := SIGM 4 125;
END_FUZZIFY

DEFUZZIFY out
	TERM low := (0,0) (5,1) (10,0);
	TERM mid := (10,0) (15,1) (20,0);
	TERM high := (20,0) (25,1) (30,0);
	METHOD : COG;
	DEFAULT := 0;
END_DEFUZZIFY

RULEBLOCK No1
	AND : MIN;
	ACT : MIN;
	ACCU : MAX;

	RULE 1 : IF temperature IS low THEN out IS low;
	RULE 2 : IF temperature IS high THEN out IS high;
END_RULEBLOCK

END_FUNCTION_BLOCK