说明：  PLC好学吗？有的人说好学，更多的人说难学。我的看法是入门易，深造难。入门易，总有它易的方法。很多人都买了有关PLC的书，如果从头看起的话，我想八成学不成了。因为抽象与空洞占据了整个脑子，一句话晕！ 学这东东要有可编程控制器和简易编程器才好，若无，一句话，学不会。因为无法验证对与错。如何学，我的做法是直奔主题
(PLC to learn it? Some people say that to learn, more difficult to learn that. My view is that entry is easier to study hard. Easy entry, there is always easy to approach it. Many people have bought a book on the PLC, if people could see that, I would like to learn not to become八成. As abstract and empty to occupy the entire brain, a word halo! Dongdong must learn this simple programmable logic controller and programmer to do, and if not, a word, the school will not. Could not be verified because of right and wrong. How to learn, I went straight to the theme of the approach is)