ＰＬＣ编程所用的IL梯形图语言教程。你可以从中了解到如何为PLC编写程序。梯形图语言很有趣，逻辑性很强，同时功能强大。-This is the IL language for PLC programming.You can learn from this PPT to get the key to write the language.IL language is interesting and useful as well.