zadatak 16.

PROGRAM PLC_PRG
VAR
	START AT %IX0.0:BOOL:=TRUE;
	B1 AT %IX0.1:BOOL:=TRUE;
	A1 AT %IX0.2:BOOL:=TRUE;
	A2 AT %IX0.3:BOOL:=TRUE;
	A3 AT %IX0.4:BOOL:=TRUE;
	A4 AT %IX0.5:BOOL:=TRUE;


END_VAR

VAR
	Y1 AT %QX0.0:BOOL:=FALSE;
	Y2 AT %QX0.1:BOOL:=TRUE;
	Y3 AT %QX0.2:BOOL:=FALSE;
	Y4 AT %QX0.3:BOOL:=TRUE;
	H1 AT %QX0.4:BOOL:=FALSE;
END_VAR

VAR
	BROJAC1:CTU;
	BROJAC2:CTU;
	K1:BOOL:=FALSE;
END_VAR


BROJAC1(CU:=A2, PV:=6, RESET:=BROJAC1.Q );
BROJAC2(CU:=A4, PV:=2, RESET:=BROJAC2.Q );

IF START THEN
	K1:=TRUE;
END_IF

IF K1 AND B1 AND A1 THEN
	Y2:=FALSE;
	Y1:=TRUE;
END_IF

IF A2 AND BROJAC1.CV<6 THEN
	Y1:=FALSE;
	Y2:=TRUE;
END_IF

IF BROJAC1.Q AND A3 THEN
	Y4:=FALSE;
	Y3:=TRUE;
END_IF

IF A4 THEN
	Y4:=TRUE;
	Y3:=FALSE;
END_IF

IF BROJAC2.Q THEN
	H1:=TRUE;
	K1:=FALSE;
END_IF