Seven of PLC accessible to beginners learning error - how to solve

PLC is the foundation of modern industry, although it is a product of the second industrial revolution, but after nearly a century of ups and downs, it not only has not disappeared, and more and more powerful, not only widely used in industrial production, also widely used in life. Many in the factory is engaged in the maintenance electrician, my friend, and who have just graduated from school students want to in the automation industry, PLC controller is not open around camp. Can suffer from no experience, no predecessors to lead the way, combined with expert master flying now, to go a lot of detours, small make up for this specially hope to bring you help.

a, with the brand is the most common, and also the problem of LOW, often leave a message on such questions, in the background introduction is the study of mitsubishi PLC of Siemens PLC is better? How soon can I have a mitsubishi, the foundation of society of Siemens PLC? For such kind of introduction of low-level problem, don't want to repeat again, waiting for you with good, estimate the day lily are rotten. How to select PLC is the vast majority of cases according to their contact in actual life, how long work in contact with mitsubishi mitsubishi, Siemens and vice. If it is other brand, Siemens brand in Europe and America in schooling, domestic mitsubishi brand in Asia. Be worth what carry is, when you never contact with PLC, to simple and easy-to-use can choose mitsubishi, want to learn the market at present the most widely used Siemens can be selected.

2, don't begin to find this also is very common, in electrician learning network BBS can download all kinds of PLC programming manual, read carefully to find posts inside you will find there are a lot of is all the information you need, don't have a problem to speak first to others, the correct behavior should be active to find first, using the Internet to powerful search function, and find what you need. When they can't find want to content, learn to the teacher for advice. Remember never to look for the process to make you more appreciative of the information content.

three, have to watch when you get the data, hoping to careful reading, rather than allowing data to sleep. This is interlinked, article 3 and their hard to find will cherish, have a good view.

4, simple introduction to dwell on a lot of expert advice from mitsubishi PLC, the reason is simple introduction, many novice did the same. It need not, since you want to learn PLC, should face the difficulty, the thinking is simple, you simply don't learn. Relative to Siemens PLC, mitsubishi PLC is relatively easy, because it gave you cured a lot of things, such as it has no concept of variables, such as it does not address the concepts, such as he didn't ST emerging PLC programming language, such as language you learn mitsubishi PLC, also learn the ladder diagram. Application of ladder diagram is also more and more narrow, of course, mitsubishi also support the IEC standard, also have structured programming mode, also difficult.

five based old people ask, don't go to learn, can learn to zero basis? Experts are not responsible for, always send some zero introductory tutorial. Everything starts from the basic study, basic didn't go to learn, do you go to driving school to learn front, have a car? Also know the steering wheel is round, really is by the way, know the steering wheel is round, diangon. Com, this is the foundation of the students. Similarly, learning PLC is also starting from the foundation electrician foundation, a fitter you learn PLC? He even can't understand dc, ac, that how to distinguish between dc ac isn't begin? PLC, including the basis of mandarin Chinese ( Can the normal communication) , electrician foundation ( Direct current, alternating current (ac), switch button, relay and other components) , computer basis ( The basic principle of computer, binary, hexadecimal, byte, word such as common sense) As well as mechanical, hydraulic, pneumatic, etc. Again, don't we can learn, to learn without foundation base.

6, the fixed thinking model, cannot extrapolate, this is the most terrible one instance, the so-called work experience, is also constantly, perfect their knowledge structure and reserves, rather than a simple mechanical time to accumulate. You get ten years since the lock interlock stir the self-locking interlock a month is the same. Learning the PLC, PLC in ways of thinking, don't always think about logic circuit into a ladder diagram, this is wrong, because although there is a relationship between, but nature is not the same, work mechanism also differ. The best way is to learn more practice, more to look at the others write programs.

seven, practice more modular programming, instead a mitsubishi pole pattern of many learned mitsubishi PLC, and didn't think seriously about man, a look at Siemens program, mainly S7 - 300年,S7 - 1200，S7- 1500 the application of a face of meng, this is what ah, this is PLC? And I didn't see, how is FB? This is actually the modular programming method, is the development trend of PLC. The advantages of this approach is very much, especially for large projects, a distributed engineering, chemical plant, as well as the future of information is very convenient. And for system extension, equipment, also is very convenient. If you want to get it ladder diagram, doing the self-locking interlock, it doesn't matter if they are not learn.