Traffic Light Plc Programming Ladder Logic

The traffic light plc program is a combination of timers to control which lights are turned on and for how long time.

Traffic light plc programming ladder logic.

The traffic light is one of the classic examples in plc ladder logic. Traffic light ladder logic diagram. This cycle is repeated infinite times until and unless the switch is turned off. While the switch x0 is turned on all the lights red yellow and green are turned on one by one.

This plc program gives the solution to control heavy traffic jams using programmable logic control. We looked at the sequence of operation using input output and mask tables. Design ladder logic for 4 way traffic light control system. Part 3 returned to the traffic light application and expand our program significantly.

At many schools universities and even companies you will get the challenge to make a traffic light ladder logic diagram. Part 4 will now continue with the programming of the logic in the plc. Plc based traffic light control system ladder logic diagram. Traffic light control using plc ladder logic we most often come across a three way traffic jam in our city.

Here is plc program to control traffic lights along with program explanation and. Plc ladder logic programming examples. We can take four directions north south west and east with three output lamps green red and yellow. Timer sqo sequencer output sequencer o 2 0 north south green light output o 2 1 north south yellow light output o 2 2 north south red light.