Engineer story sharing(15)

My relationship with plc started when I was designing and making electronic control in a company many years ago. The product at the time said from the heart that it was really not controlled by plc, of course, it would not be this thing. Just know a little from the surface. In order to make his product tall, the boss told me to use this thing to control. What to do, learn. At that time, the boss was very important to me and supported me very much. I also asked Plc's friend, I asked, I can learn this thing for half a year. At that time, people’s eyes and the tone of speech were still vivid. Can you learn for three years? In my heart, I was eager to fight. It must be half a year. Now think about it, there are not many people at plc, and people may say that they may respect the knowledge they have. There will not be a lot of competitions at that time.
I headed into the world of plc. At that time, I chose Mitsubishi's products. I can't think of how to choose Mitsubishi instead of Siemens. I haven't learned from Siemens and I can't judge the pros and cons of each other. The reality is that the control of the unit's automation products is Siemens. Is it very embarrassing? But so far there is no product that needs me to change the program. The plc will be familiar with the maintenance of the automatic control system.
Talk about learning methods. The first two articles have said that learning a frequency converter really does not need to buy a frequency converter to learn. But to learn this, I suggest that it is more practical to be more sensible, easier to learn, and more fulfilling. Is it easy to learn it? I don't think it's not difficult. Although I haven't mastered all the functions of the PLC, I can still do a lot of control. The first step I made at the time was to buy a book. Look, this reminds me of why I chose to learn Mitsubishi. At the time, the shelves were all Mitsubishi books. The second step was to buy a second-hand laptop. The third step is to buy a PLC. At that time, the city did not sell PLC. I entrusted the boss who often bought electrical parts. Really, I didn't know that there was online shopping at that time. A 16-point one wants me two thousand. How long does it feel like the application is almost three months? Common control, sequential pipeline control can be designed. Learning it, I realize that you have to have a circuit diagram. Usually draw a circuit diagram. This circuit diagram is the control circuit diagram that we usually do, what move, interlock. Not an electronic circuit diagram that is a headache. Control circuit diagram is not very easy to learn. When the PLC starts, it is the ladder diagram drawing circuit diagram. The ladder diagram is the circuit diagram with the symbol changed, so the PLC diagram is really easy to get started.








It is a prerequisite to draw a circuit diagram. The second point I suggest is that there is still something to learn. Although there is simulation program verification in the programming software. I feel that I feel the light on the paper. With physical things, learning faster and more practical. Giving people a system is more emboldened.
The ladder diagram is a method of programming it, as well as the function diagram, the statement table, and various instructions. It is most interesting to follow the function chart. All kinds of pipelines, the robots use it. When you learn it, you feel that you are not doing electricity. Let it execute. You step by step to finish writing, it’s very interesting, not the more The harder it is to learn, the more interesting it is to learn, the easier it is. The statement table is a very abstract thing for handheld programmers that are not used in computers. Understand it, you can learn it. The instructions are quite good, so that the thing that makes your control feel smart is that it is done, addition and subtraction. and many more.
PLC is really fun and not difficult to learn, it makes our control easier. (Complex self-locking interlocks are written in the program.) The function is more powerful and can be learned by an electrician. The times also require us electrical people to master it.