Car parking system is one of the examples in PLC program using RSLOGIX 500.
There are two garages for parking four wheelers in the building. Each garage occupies maximum of 5 cars at a time. Each time cars enters PLC automatically counts it to a total sum of cars found in the garage.
If Limit exceeds, garage filled lamp should turn ON and directs other drivers to Gate 2 garage parking.
If Limit exceeds in both Gate 1 & 2, parking closed signal will turn on that a garage is full and notifying other drivers not to enter because there is no space available.
Latching rung to operate the system through Master Start and Stop PB.
Gate 1 entry to allow vehicles to enter using entry sensor.
To count the number of cars(maximum 5 cars in each garage) entry using counter, If limit exceeds, Garage Gate 1 filled lamp will turn ON.
When exit sensor turns ON, Exit gate should on to make a count using counters.
When Garage 1 is completely filled; Gate 2 garage follows the same procedure as above mentioned logic.
Note:
The above explained Car Parking process is for example only. It may vary from real time. We can use this example program to understand the working of Counters and interlocking concept function in AB PLC.
If you liked this article, then please subscribe to our YouTube Channel for PLC and SCADA video tutorials.
You can also follow us on Facebook and Twitter to receive daily updates.
Read Next:
Lube oil consoles of rotary equipment packages in industrial process plants are usually equipped with…
Rotating equipment packages such as pumps, compressors, turbines need the lube oil consoles for their…
This article explains how to blink lights in ladder logic with a detailed explanation video…
In this article, a simple example will teach you the conversion from Boolean algebra to…
In this article, you will learn the PLC cooking timer example for kitchen automation using…
Learn an example PLC program to control a pump based on level sensors using ladder…
View Comments
I thank a lot I have understand your explanation,,, but try to draw ladder diagram