1. Traffic Light Panel Plc Programming
2. Street Light Ladder Logic

The previous traffic light example is to be implemented in ladder logic. The inputs and outputs are defined in Figure 11.9 Inputs and Outputs for Traffic Light Controller, assuming it will be implemented on an Allen Bradley Micrologix. First scan is the address of the first scan in the PLC. Due to a request I wrote this ladder diagram for a traffic light and tested it on my S7200 plc. Program 2: TRAFFIC SIGNAL PROGRAM When start press RED signal ON for 10 second and OFF, then after YELLOW signal ON for 10 second and OFF, then after GREEN signal ON for 10 second and OFF.

Traffic Light Panel Plc Programming

Here is PLC program to Control Traffic Lights, along with program explanation and run time test cases. Ladder Diagram to control Traffic Light. In part 1 we looked at writing PLC programs to control a traffic light using discrete bits and then using timed sequencing using indirect addressing. We will now look at how we can use indirect addressing for inputs as well as output to control the sequence in the program. Students have to write a PLC program starting from a single traffic light operation, adding later multiply traffic lights and include pedestrian lights and extending PLC program to include external control for emergency such as fire and ambulance.

Traffic light Simulation: Traffic light program in C presents what happens in our daily life at traffic light signals. Firstly user will press a key to start the traffic light simulation.

C programming code

1. #include<conio.h>
2. #include<stdlib.h>
3. main()
4. int gd = DETECT, gm, midx, midy;
5. initgraph(&gd,&gm,'C:TCBGI');
6. midx = getmaxx()/2;
7. settextstyle(SCRIPT_FONT, HORIZ_DIR,3);
8. outtextxy(midx, midy-10,'Traffic Light Simulation');
9. outtextxy(midx, midy+10,'Press any key to start');
10. cleardevice();
11. settextstyle(DEFAULT_FONT, HORIZ_DIR,1);
12. circle(midx, midy-50,22);
13. floodfill(midx, midy-50,WHITE);
14. outtextxy(midx,midy-50,'STOP');
15. graphdefaults();
16. setcolor(WHITE);
17. circle(midx, midy,20);
18. floodfill(midx, midy,WHITE);
19. outtextxy(midx-18,midy-3,'READY');
20. delay(2000);
21. setcolor(WHITE);
22. circle(midx, midy+50,22);
23. floodfill(midx, midy+50,WHITE);
24. outtextxy(midx-7,midy+48,'GO');
25. settextstyle(SCRIPT_FONT, HORIZ_DIR,4);
26. outtextxy(midx-150, midy+100,'Press any key to exit..');
27. getch();
28. return0;

Download Traffic Light Simulation. Worms ultimate mayhem.

Street Light Ladder Logic