PLC控制交通灯系统设计
= Q0.0 LD T37 AN T38 LD T41 AN T42 OLD
LD T45 AN T46 OLD
A SM0.5 = Q0.1 LD T38 AN T39 LD T39 AN T40 A SM0.5 OLD
LD T42 AN T43 OLD
LD T43 AN T44 A SM0.5 OLD
LD T46 AN T47 OLD
LD T47 AN T48 A SM0.5 OLD
= Q0.2 LD T38 AN T39 LD T42 AN T43 OLD
LD T46 AN T47 OLD
= Q0.3 LD T39 AN T40 LD T43
40
PLC控制交通灯系统设计
AN T44 OLD
LD T47 AN T48 OLD
A SM0.5 = Q0.4 LD I0.0 LD M0.0 AN T37 LD M0.1 AN T41 OLD
LD M0.2 AN T45 OLD ALD
LD T37 AN T38 LD T41 AN T42 OLD
LD T45 AN T46 OLD
A SM0.5 OLD
= Q0.5
41
