国产PLC软件PikePLC——FBD图形化编程语言开发交通灯控制示例

基于PikePLCStudio用FBD图形化编程语言开发了一个用于控制交通灯的简单示例。

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

• 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

 

 1 PROGRAM TrafficLight3
 2  VAR
 3     power AT %IX0.0:BOOL; //电源控制开关
 4     snRed AT %QX0.0:BOOL; //南北向红灯
 5     snGreen AT %QX0.1:BOOL; //南北向绿灯
 6     snYellow AT %QX0.2:BOOL; //南北向黄灯
 7     weRed AT %QX0.3:BOOL; //东西向红灯
 8     weGreen AT %QX0.4:BOOL; //东西向绿灯
 9     weYellow AT %QX0.5:BOOL; //东西向黄灯
10     time0:TIME;
11     time1:TIME;
12     time2:TIME;
13     time3:TIME;
14     time4:TIME;
15     time5:TIME;
16  END_VAR
17 
18  VAR     
19      R_TRIG0:R_TRIG;//接通电源，上升沿触发红绿灯开始工作
20      F_TRIG0:F_TRIG;//关闭电源，下降沿触发将所有红绿灯都关闭
21     
22      TON0:TON;//控制南北向路灯亮27秒的定时器
23     TON1:TON;//控制南北向黄灯亮3秒的定时器
24     TON2:TON;//控制南北向红灯亮30秒的定时器
25     TON3:TON;//控制东西向红灯亮30秒的定时器
26     TON4:TON;//控制东西向的绿灯亮27秒的定时器
27     TON5:TON;//控制东西向的黄灯亮3秒的定时器
28  END_VAR
29  
30 END_PROGRAM

• 程序逻辑

• 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_1
R_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_2
F_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_3
TON0
(
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_4
TON1
(
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_5
TON2
(
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_6
TON3
(
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_7
TON4
(
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_8
TON5
(
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_8
END_PROGRAM

 

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