国产PLC软件PikePLC——FBD图形化编程语言开发交通灯控制示例(东西向控制定时器红灯绿灯)

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本文最后的ST源代码是FBD编译器将FBD转换为ST语言后的结果。

说明：本示例主要是为了演示使用PikePLCStudio基于FBD开发PLC程序的能力，至于交通灯控制程序逻辑本身，不排除还会有其它更好的逻辑算法。
另外，本人不保证FBD程序逻辑的正确性[憨笑]

例子描述如下：

十字路口有南北向和东西向四个红绿灯。南北向和东西向的红灯亮时长为30秒。南北向和东西向的绿灯亮时长为27秒，黄灯亮时长为3秒。当电源控制开关接通后，南北向的先绿灯亮，东西向的红先灯亮。当电源控制开关断开后，所有的红绿灯都关闭。定义变量

PROGRAM TrafficLight3 VAR power AT %IX0.0:BOOL; //电源控制开关 snRed AT %QX0.0:BOOL; //南北向红灯 snGreen AT %QX0.1:BOOL; //南北向绿灯 snYellow AT %QX0.2:BOOL; //南北向黄灯 weRed AT %QX0.3:BOOL; //东西向红灯 weGreen AT %QX0.4:BOOL; //东西向绿灯 weYellow AT %QX0.5:BOOL; //东西向黄灯 time0:TIME; time1:TIME; time2:TIME; time3:TIME; time4:TIME; time5:TIME; END_VAR VAR R_TRIG0:R_TRIG;//接通电源，上升沿触发红绿灯开始工作 F_TRIG0:F_TRIG;//关闭电源，下降沿触发将所有红绿灯都关闭 TON0:TON;//控制南北向路灯亮27秒的定时器TON1:TON;//控制南北向黄灯亮3秒的定时器TON2:TON;//控制南北向红灯亮30秒的定时器TON3:TON;//控制东西向红灯亮30秒的定时器TON4:TON;//控制东西向的绿灯亮27秒的定时器TON5:TON;//控制东西向的黄灯亮3秒的定时器 END_VAR END_PROGRAM程序逻辑

基于FBD的程序逻辑部分

国产PLC软件PikePLC——FBD图形化编程语言开发交通灯控制示例(东西向控制定时器红灯绿灯) 软件优化

（图片来自网络侵删）

PikePLCStudio界面截图

FBD编译器生成的ST代码

PROGRAM TrafficLight3 VAR power AT %IX0.0:BOOL; //红绿灯控制开关 snRed AT %QX0.0:BOOL; //南北向红灯 snGreen AT %QX0.1:BOOL; //南北向绿灯 snYellow AT %QX0.2:BOOL; //南北向黄灯 weRed AT %QX0.3:BOOL; //东西向红灯 weGreen AT %QX0.4:BOOL; //东西向绿灯 weYellow AT %QX0.5:BOOL; //东西向黄灯 time0:TIME; time1:TIME; time2:TIME; time3:TIME; time4:TIME; time5:TIME; END_VAR VAR R_TRIG0:R_TRIG;//接通电源，上升沿触发红绿灯开始工作 F_TRIG0:F_TRIG;//关闭电源，下降沿触发将所有红绿灯都关闭 TON0:TON;//控制南北向路灯亮27秒的定时器TON1:TON;//控制南北向黄灯亮3秒的定时器TON2:TON;//控制南北向红灯亮30秒的定时器TON3:TON;//控制东西向红灯亮30秒的定时器TON4:TON;//控制东西向的绿灯亮27秒的定时器TON5:TON;//控制东西向的黄灯亮3秒的定时器 OR_OUT:BOOL; AND_OUT:BOOL;END_VAR//START NETWORK_1R_TRIG0(CLK:=power);OR_OUT:=OR(IN1:=R_TRIG0.Q,IN2:=snGreen);snGreen:=OR_OUT;OR_OUT:=OR(IN1:=R_TRIG0.Q,IN2:=weRed);weRed:=OR_OUT;//END NETWORK_1//START NETWORK_2F_TRIG0(CLK:=power);AND_OUT:=AND(IN1:=F_TRIG0.Q,IN2:=power);OR_OUT:=OR(IN1:=AND_OUT,IN2:=snGreen);snGreen:=OR_OUT;OR_OUT:=OR(IN1:=AND_OUT,IN2:=snRed);snRed:=OR_OUT;OR_OUT:=OR(IN1:=AND_OUT,IN2:=snYellow);snYellow:=OR_OUT;OR_OUT:=OR(IN1:=AND_OUT,IN2:=weGreen);weGreen:=OR_OUT;OR_OUT:=OR(IN1:=AND_OUT,IN2:=weRed);weRed:=OR_OUT;OR_OUT:=OR(IN1:=AND_OUT,IN2:=weYellow);weYellow:=OR_OUT;//END NETWORK_2//START NETWORK_3TON0(IN:=snGreen,PT:=t#27s,ET=>time0);OR_OUT:=OR(IN1:=TON0.Q,IN2:=snYellow);snYellow:=OR_OUT;OR_OUT:=OR(IN1:=OR_OUT,IN2:=snRed,IN3:=NOT(IN:=power));snGreen:=NOT(IN:=OR_OUT);time0:=TON0.ET;//END NETWORK_3//START NETWORK_4TON1(IN:=snYellow,PT:=t#3s,ET=>time1);OR_OUT:=OR(IN1:=TON1.Q,IN2:=snRed);snRed:=OR_OUT;OR_OUT:=OR(IN1:=OR_OUT,IN2:=snGreen,IN3:=NOT(IN:=power));snYellow:=OR_OUT;time1:=TON1.ET;//END NETWORK_4//START NETWORK_5TON2(IN:=snRed,PT:=t#30s,ET=>time2);OR_OUT:=OR(IN1:=TON2.Q,IN2:=snGreen);snGreen:=OR_OUT;OR_OUT:=OR(IN1:=OR_OUT,IN2:=snYellow,IN3:=NOT(IN:=power));snRed:=NOT(IN:=OR_OUT);time2:=TON2.ET;//END NETWORK_5//START NETWORK_6TON3(IN:=weRed,PT:=t#30s,ET=>time3);OR_OUT:=OR(IN1:=TON3.Q,IN2:=weGreen);weGreen:=OR_OUT;OR_OUT:=OR(IN1:=OR_OUT,IN2:=weYellow,IN3:=NOT(IN:=power));weRed:=NOT(IN:=OR_OUT);time3:=TON3.ET;//END NETWORK_6//START NETWORK_7TON4(IN:=weGreen,PT:=t#27s,ET=>time4);OR_OUT:=OR(IN1:=TON4.Q,IN2:=weYellow);weYellow:=OR_OUT;OR_OUT:=OR(IN1:=OR_OUT,IN2:=weRed,IN3:=NOT(IN:=power));weGreen:=NOT(IN:=OR_OUT);time4:=TON4.ET;//END NETWORK_7//START NETWORK_8TON5(IN:=weYellow,PT:=t#3s,ET=>time5);OR_OUT:=OR(IN1:=TON5.Q,IN2:=weRed);weRed:=OR_OUT;OR_OUT:=OR(IN1:=OR_OUT,IN2:=weGreen,IN3:=NOT(IN:=power));snYellow:=NOT(IN:=OR_OUT);time5:=TON5.ET;//END NETWORK_8END_PROGRAM

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