以东西南北红绿灯为例
其实比较简单，不多说了，就是使用PLC S7-200的顺控指令并行分支，一个分支执行东西红绿灯，另一个执行南北，最后汇总转移。
为什么说是伪多线程？
因为最后需要汇总转移，两个分支在最后具有一定耦合性，并不能说完全相互独立。
查看详细图片
红绿灯闪烁部分可以看看
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| TITLE=PROGRAM COMMENTS
Network 1 // Network Title
// Network Comment
LD I0.0
S S0.0, 1
Network 2
LD I0.0
O M0.0
AN I0.1
= M0.0
Network 3
LSCR S0.0
Network 4
LD M0.0
SCRT S0.1
SCRT S0.2
Network 5
SCRE
Network 6
LSCR S0.1
Network 7
LD SM0.0
TON T37, 250
Network 8
LDN T37
= M0.3
Network 9
LD T37
SCRT S0.3
Network 10
SCRE
Network 11
LSCR S0.3 //闪烁部分
Network 12
LD SM0.0
TON T38, 30
Network 13
LD M0.0
AN T39
TON T40, 5
Network 14
LD T40
TON T39, 5
Network 15
LD T40
AN T38
= M0.1
Network 16
LD T38
SCRT S0.4
Network 17
SCRE
Network 18
LSCR S0.4
Network 19
LD SM0.0
TON T41, 20
Network 20
LDN T41
= Q0.1
Network 21
LD T41
TON T42, 300
Network 22
LDN T42
= Q0.2
Network 23
SCRE
Network 24
// 南北信号灯
LSCR S0.2
Network 25
LD M0.0
TON T43, 300
Network 26
LDN T43
= Q0.5
Network 27
LD T43
SCRT S0.5
Network 28
SCRE
Network 29
LSCR S0.5
Network 30
LD M0.0
TON T44, 250
Network 31
LDN T44
= M0.2
Network 32
LD T44
SCRT S0.6
Network 33
SCRE
Network 34
LSCR S0.6
Network 35
LD SM0.0
TON T45, 30
Network 36
LD M0.0
AN T46
TON T47, 5
Network 37
LD T47
TON T46, 5
Network 38
LD T47
AN T45
= M0.4
Network 39
LD T45
SCRT S0.7
Network 40
SCRE
Network 41
LSCR S0.7
Network 42
LD SM0.0
TON T47, 20
Network 43
LDN T47
= Q0.4
Network 44
SCRE
Network 45
LD S0.7
A S0.4
AN I0.1
R S0.7, 1
R S0.4, 1
S S0.0, 1
Network 46
LD M0.3
O M0.1
= Q0.0
Network 47
LD M0.2
O M0.4
= Q0.3
|
当然也在github上开源的，直接下载下来，看梯形图更方便。
