Where to learn electronic control PLC, how to learn PLC?

At present, learning PLC is basically self-learning by purchasing ** tutorials, and I registered to learn in Gicheng Technology. There are PLC tutorials for Siemens S7-200 and Mitsubishi FX2N, and related introductory knowledge. I feel that it is very well spoken, and I recommend it to you, and there is no meaning of advertising.

Hope that helps.

Self-learning fast! Prepare a few things and you're ready to learn.

Find someone with a device, a practice book, software, a computer, and a network.

The fastest. Self-study is the slowest, and there are serious doubts about whether you can learn it or not.

If you can't read books behind closed doors, you have to learn PLC.

The rest is either useless.

Touch screen, stepper, servo, PID encoder, communication, inverter, host computer are all essential technologies.

Or learn in vain. Not to mention design, selection, integrated programming, placement and routing, configuration.

The complete PLC industrial field control system is an integrated electrical control system, including PLC, intermediate relays, contactors, switches, pneumatic control and actuators, ordinary motors, frequency converters and frequency conversion motors, stepper controllers and stepper motors, servo controllers and servo motors, analog control, PID, etc. The PLC is only the core component of the control system.

Therefore, learning PLC requires a certain foundation in electrical engineering, analog electronics and digital electronics, circuit foundation, electrical components foundation, etc., because the description of PLC itself has a lot of professional terms, without relevant foundation, and the relevant professional terms, programming methods, usage methods, signal forms, etc. will also be very confused, learn to work in vain, and have an impact on their confidence in learning.

With the above foundation, learning PLC is divided into the following parts: 1. Understand the working mode, input and output, and wiring of PLC; 2. Learn PLC programming software; 3. Understand PLC programming methods and instructions; 4. Understand the control methods of ordinary motors, inverters and inverter motors, stepper controllers and stepper motors, servo controllers and servo motors, analog acquisition and control, etc.; 5. Selection of the whole system of PLC, including the PLC itself, the execution of electrical components, etc.; 6. Prepare design specifications for the requirements and understanding of industrial site control; 7. Write PLC control flow chart; 8. Write programs; 9. On-site commissioning.

In fact, for the entire PLC industrial field control system, it is more important to write design specifications and write control flow charts for the requirements of on-site control, with the core idea of control flow charts, there will be complete process procedures, and programming can be orderly and logical.

Why learn PLC automation?

China is a big industrial country, and has formed an independent and complete modern industrial system so far, and is the world's first country with all the industrial categories in the United Nations Industrial Classification.

Driven by a new generation of information technology such as 5G, artificial intelligence, and big data, industrial automation, digitalization, and intelligence have become the main development directions. The manufacturing industry has shifted from low-tech manufacturing to intelligent manufacturing.

PLC as the center of the entire industrial control system, PLC coordinates the operation and stop of various mechanical equipment of the control workstation, and it is the brain of the industrial control system. Mastering PLC is to master the core of the entire automation control, and to be able to use PLC technology is an obvious advantage for learning industrial robots! Understand the basic circuit knowledge, and then learn programming, and the program will be more handy.

Without PLC, the industrial robot is just an operation body, and can not achieve much automation, it needs a control center, that is, PLC, only by mastering the programming, you can stand at the top and operate more robots at the same time.

First of all, buy a book about PLC (it is recommended to buy a book "Electrical Control and PLC Application Technology", the first half of this book talks about some commonly used electrical components and basic circuits in the electric control cabinet, and the second half talks about the application of PLC. ）

Then, based on the examples in the book, figure out a small project to implement a feature on your own.

Finally, practice makes sense. Do a PLC project independently, and the PLC will be mastered after the project is completed, and the small PLC of Siemens 200 series is very suitable for novices to learn and is relatively easy to get started.

Learning process: First of all, we must understand the knowledge of electricians, understand how to control electrical appliances, understand various actuators, and then understand the working mode of PLC, input and output circuits, and finally understand the corresponding process.

1, learn PLC first of all to choose a good learning of which manufacturer's PLC, the Japanese PLC internal software integration is high application simple early OMRON, Mitsubishi application more, now due to the first and international cooperation between the application of Siemens PLC, Rockwell a little more, (although it is said that a brand is profound, others will soon get started, but people's energy is limited, must be used in the most widely used, potential, development of a direction, However, for each brand of PLC have some understanding, including imported, domestic, these have a corresponding understanding, for the characteristics of each PLC, advantages and disadvantages, these have a better understanding, then will be a rare talent in the market in the future. ）

2. PLC is not a single programming technology, it is a system professional course. A PLC can be broadly considered a highly reliable PC with an operating system embedded in the back. First of all, you need to be proficient in the programming language ladder diagram and sentence table language of the PLC itself.

At this level, you can only read the programmed programs and design some of the programs needed for the project. In this industry, it is also necessary to apply VB and VC to realize serial port communication and distributed control system. Knowledge of databases is also required in some large programs.

PLC is quick to get started, but you have to keep making an effort. ）

3. PLC is a discipline that focuses on the application direction. So a little more practice. Don't look down on small projects, where you can summarize the logical thinking method for designing programs.

Keep making progress in the summary. For example, every time you go to the site for a test, call the program on site to check and understand how the structure of the program is different from other programs and its characteristics.