পিএলসি পরিচিতি / About PLC

P L C

 P L C  (Programmable Logic Controller) :

Programabala logic controller of the short name PLC . PLC is a microcontroller based electronics device .

Through which any type of device can be automated. It can also be used as an alternative to microcontrollers.The different types and the brand P L C There is. Siemens , Amrana , Mitsubishi , LG , Delta , Ellen Bhrantali , Schneider These are the times In one or our country widely byabarita. PLC is used in chemical industry, nuclear power plant, home automation and automated industry.

Part of PLC :

You may already know that PLC is a microcontroller based electronics device. So like the microcontroller, the parts that it contains are.

1. Input or output unit

2. Central Processing Unit (CPU)

3. Power supply unit

Your mobile phone or smartphone also has this tint part there. So I don't think there is any need to waste time going into new discussions.Always remember "Theory first after the practical" If we present to you the huge theory first you can get very scared. It may seem that "PLC" is actually a lot harder. It's a very simple idea "PLC" is a very simple thing. We will learn slowly. We will discuss and learn difficult or theoretical topics later.

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The words come let us. I remember " P L C " of the two parts there.

1. Hardware -Here you do or siksanio is, it's some of the electronic parts of the sampannaye formed. The Parts no reason to waste the"PLC" do not want you in this part of the ripiyarim to it.

2. Software - 

We call it programming. PLC is a type of application software used for programming. Each company has a different type of software for PLC. Although the software is multiple, we use "ladder logic" for programming.

So you know we need to learn "ladder logic" better. If you can create programs using Ladder Logic, the program you create can be used on any PLC with a few modifications.

Vacuum tube 

1904 in the Sir John Ambrose vacuum tubes to do.

* Electrical signal magnified the power of a device. * It is also used in the case of switching .

Advantages of PLCs

PLCs are not only capable of performing the same tasks as hard-wired control, but are also capable of many more complex applications. In addition, the PLC program and electronic communication lines replace much of the interconnecting wires required by hard-wired control.EEE Admission Question & Answer

Therefore, hard-wiring, though still required to connect field devices, is less intensive. This also makes correcting errors and modifying the application easier.

Some of the additional advantages of PLCs are as follows:

Smaller physical size than hard-wire solutions.

Easier and faster to make changes.

PLCs have integrated diagnostics and override functions.

Diagnostics are centrally available.

Applications can be immediately documented.

Applications can be duplicated faster and less expensively.

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Siemens PLCs

Siemens makes several PLC product lines in the SIMATIC® S7 family. They are: S7-200, S7-300, and S7-400.

Conclusion

 These applications are specifically highly customized systems. It is cheaper when compared to the price of a specific custom-built controller. Generally, it requires less maintenance and is more robust, henceforth making the things they control work better, despite the environment.

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