PLC is not a software class, it is a technology and a discipline. You can learn it well by watching videos or something. That's completely impossible. Let's take the simplest example: a farmer hoes the ground step by step, and after learning it several times, he thinks it's ok. In fact, he still needs to know the difference between weeds and crops, and it is more appropriate to leave a few stubbles. 1. If you want to learn PLC well, you must first understand electrical design. Then you can read some books on PLC (for example, if you want to learn Mitsubishi PLC, you can read books on Mitsubishi PLC) to understand the instructions. Finally, buy a PLC and write a few programs yourself (this is very important! ! ! It is also the best way) @@ @, easy to learn. 2. If you want to go further, you must learn the basic knowledge of computers and electronics, such as the conversion of binary, octal, 10 and 16. Communication, analog quantity, digital quantity and so on step by step! 3. If we go further, according to the current situation, we can learn some computer programming software, such as some configuration software, VB VC and so on. Generally, this process takes about 3 or 4 years. Of course, I went far. Now you can learn 1, and then grow up slowly in the enterprise. Go to the bookstore to buy the following books on electrical design and PLC control, the simplest and most primitive. It is best to buy second-hand PLC. Write some programs yourself (the things you need are computer (notebook), PLC software and PLC data cable (if the data cable is 232 and the notebook doesn't have 232, you need to buy USB-232). If PLC feels dangerous, buy a 24V PLC first and then a 24V power supply. PLC had better buy transistors to lay the foundation for studying servo in the future)