要求是:有三个灯,依次亮三秒灭三秒,循环下去

TITLE=程序注释
Network 1 // 网络标题
// 网络注释
LD SM0.1
LD Q0.1
AN T33
OLD
O T41
= Q0.1
TON T33, 300
Network 2
LD Q0.1
TOF T34, 400
Network 3
LD T34
TON T35, 600
Network 4
LD T35
LD Q0.2
AN T36
OLD
= Q0.2
TON T36, 300
Network 5
LD Q0.2
TOF T37, 40
Network 6
LD T37
TON T38, 60
Network 7
LD T38
LD Q0.3
AN T39
OLD
= Q0.3
TON T39, 30
Network 8
LD Q0.3
TOF T40, 40
Network 9
LD T40
TON T41, 60