FUNCTION_BLOCK ocena_sr	

VAR_INPUT				
   	sr_ocena : REAL;
END_VAR

VAR_OUTPUT				
	ocena : REAL;
END_VAR

FUZZIFY sr_ocena
	TERM niska := (3,1) (5,0);
	TERM srednia := (4, 0) (5, 1) (6,1) (7,0) ; 
	TERM wysoka := (6, 0) (8,1);
END_FUZZIFY

DEFUZZIFY ocena
	TERM slaby := (5,1) (11,0);
	TERM srednia := (9,0) (15,1) (21,0);
	TERM dobry := (19,0) (25,1);
	METHOD : COG;		
	DEFAULT := 0;		
END_DEFUZZIFY

RULEBLOCK No1
	AND : MIN;			
	ACT : MIN;			
	ACCU : MAX;			
	RULE 7 : IF sr_ocena IS wysoka THEN ocena IS slaby;
	RULE 8 : IF sr_ocena IS srednia THEN ocena IS srednia;
	RULE 9 : IF sr_ocena IS niska THEN ocena IS dobry;
END_RULEBLOCK

END_FUNCTION_BLOCK