PLC LADDER LOGIC PROGRAM HOW TO

LetвЂ™s have a look at the ladder logic programming of the Staircase light control system.

The connections remain the same but this time the program will be a bit different. But this time I am using only two switches S1 and S2 and one Load which is going to be the 110/220Vac Light Bulb. If you look closely, this circuit diagram is almost the same as the previous one. Circuit Diagram of the PLC based Staircase Light Control System: So first letвЂ™s start with the circuit diagram. There are different types of the sensors available in the market. This project can also be made fully automatic if you replace the switch with the ultrasonic sensor or PIR sensors or Laser etc. With the help of this project you can also save electricity and reduce your electric bill. One switch is installed at the lower side of the Staircase while the other switch is installed at the upper side of the Staircase. In this project one light is controlled using two switches. This is also one of the most frequency used projects in building management systems. PLC based Two Way Switch for a Staircase:

PLC LADDER LOGIC PROGRAM HOW TO

The PLC programming is extremely simple, if you know exactly how to use the different contacts, this all depends on your logic. If you write the same program in Arduino, it will be a long program using multiple IF conditions and flags. Now, using this program any load can be turned ON and turned OFF.

X0, X1, X2, and X3 are the open type Input contacts while Y0, Y1, Y2, and Y3 are the output contacts. Look at the ladder logic diagram, how simple it is. X0,X1,X2,вЂ¦ Xn while the outputs are represented by Y0,Y1,Y2,вЂ¦Yn. In Fatek PLC the inputs are represented by FBS-14 means that this PLC has 8 inputs and 6 outputs. The total numbers of inputs which are available are 8 and the total numbers of outputs which can be controlled using the Fatek FBS-14 are 6. So, currently, we can only control 4 loads using these 4 switches. For 12 volts you can use a 12v adaptor or you can make your own power supply using LM7812 voltage regulator.ДЇour switches S1 to S4 are connected with the Fatek PLC inputs X0 to X3. As these relays need 12 volts, so, thatвЂ™s why C0 and C1 are connected with the 12 volts. Different type of loads can be connected with these relays. In this project the electrical loads are controlled using the buttons.Д¤ SPDT вЂњSingle Pole Double ThrowвЂќ type relays are connected with the PLC output contacts Y0 to Y3. This project is very famous among the B-Tech students and in some engineering colleges this project if offered as the Final Year Engineering Project. This is the simplest beginnerвЂ™s level project that I can think of. After, I am sure I have explained enough things then I will start explaining some complex level projects. I will start with the very simple projects and I will try to keep things simple. I would appreciate your support in this way!ДЇollowing are the PLC ladder logic programming examples. I may make a commission if you buy the components through these links. IR adjustable infrared Proximity Sensor 2v to 24V: Without any further delay letвЂ™s get started!!! I highly recommend you read these articles. In this article I am not going to explain how to run a simulation or how to add a contact and how to add comments because I have already explained these things in my previous articles, you can find links in the related projects section. If you are new to the PLC programming, then I highly recommend first read my previous two articles in which I have explained the very basics like for example These ladder logic diagrams are developed for the Fatek PLC FBS-14.

I will start with the very basic ladder logic diagrams so that you can easily understand how to write complex ladder logic programs. The PLC ladder logic programming is really easy as compared to the Arduino or any other microcontroller programming. PLC Ladder Logic Programming examples- The PLC ladder logic programming examples that I am about to share with you guys will really help you in developing complex ladder logic diagrams. PLC Ladder Logic Programming Examples, Description:

PLC based Traffic Light Control System Ladder Logic Diagram:.

PLC based Traffic Light Control System Circuit Diagram:.

PLC based Traffic Light Control System:.

PLC based Conveyor Belt / Grinder Protection System Ladder Logic Diagram:.

PLC based Conveyor Belt / Grinder Protection System Circuit Diagram:.

PLC based Conveyor Belt / Grinder Protection System:.

PLC based Objects Counting System Ladder Logic Diagram:.

PLC based Objects Counting System Circuit Diagram:.

Ladder Logic Diagram of the Staircase Light Control System:.

Circuit Diagram of the PLC based Staircase Light Control System:.

PLC based Two Way Switch for a Staircase:.

PLC Ladder Logic Programming Examples, Description:.

Plc ladder logic program