Programming a Traffic Light Controller system using SIMATIC S7-300 & HMI display
PLC Project eBooks

Programming a Traffic Light Controller system using SIMATIC S7-300 & HMI display

This book is about programming a S7-300 PLC to function as a traffic light controller. This book has been prepared for those who are already familiar with basic PLC instructions and now wish to challenge their knowledge by writing more complex industrial PLC programs: in this case, preparing a control program for a PLC to control a 4 intersection traffic light and its related 8 timing counters and 24 stop lights.  Main control program developed for  PLC controls 5 input  and 41 output signals to control 8 countdown timers,  1 × 6 digits seven segment display to display current TIME and DATE and 24 Traffic-control signal indicators etc.

Main control program developed for this project has consisted of 177 networks to control all these numerical displays and stop signal lights in harmony. When you learn to do something similar to this on your own, that is the time that you can tell your future employer “YES I CAN DO IT” with lots of confidence. I have developed two more program software( using PM designer and  SIMATIC WinCC programs) to allow system operator to monitor all activities related to this automated Traffic lights system project on a HMI device and on a PC’s monitor as well.

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