FUNCTION_BLOCK testDeMorgan2	

VAR_INPUT
	x1 : REAL;
	x2 : REAL;
END_VAR

VAR_OUTPUT
	y : REAL;
END_VAR

FUZZIFY x1			
	TERM value := (0, 1) (0, 1) ; 
END_FUZZIFY

FUZZIFY x2			
	TERM value2 := (0, 1) (0, 1) ; 
END_FUZZIFY

DEFUZZIFY y
	TERM value := (0, 1) (0, 1) ; 
	METHOD : COG;		// Use 'Center Of Gravity' defuzzification method
	DEFAULT := 0;		// Default value is 0 (if no rule activates defuzzifier)
END_DEFUZZIFY

RULEBLOCK No1
	AND : BDIF;			// Use 'BDIF' for 'and' (also implicit use 'BSUM' for 'or' to fulfill DeMorgan's Law)
	ACT : MIN;			// Use 'min' activation method
	ACCU : MAX;			// Use 'max' accumulation method

	RULE 1 : IF NOT(x1 IS value OR x2 IS value2) THEN y IS value;
	RULE 2 : IF NOT(x1 IS value) AND NOT(x2 IS value2) THEN y IS value;
	
	RULE 3 : IF NOT(x1 IS value AND x2 IS value2) THEN y IS value;
	RULE 4 : IF NOT(x1 IS value) OR NOT(x2 IS value2) THEN y IS value;
END_RULEBLOCK

END_FUNCTION_BLOCK