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所在平台: Udemy |
课程主页: https://www.udemy.com/course/learn-structured-ladder-diagram-progamming/
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\[course name] - 结构化梯形图编程培训 \[course overview] 许多课程教授PLC的基础知识和编程。本课程将介绍一种结构化技术，使您的PLC程序更加健壮、易读，并且方便技术人员维护，减少夜间紧急维修电话。 PLC自诞生以来，一直以其熟悉的界面被电气技师广泛使用。本课程将教授如何设计机器序列解决方案，通过Grafcet/SFC（顺序功能图）转换为梯形图，使技术人员能够使用他们熟悉的图形语言进行故障排除。 课程将介绍实现有限状态机的两种方法： 1. **置位/复位（Set/Reset）方法：** 最流行的方法，但某些工厂可能因安全问题禁止使用。正确实现可以保证生产效率。 2. **Petri网（PetriNet）方法：** 优点是易于将复杂的Grafcet或SFC转换为梯形图，错误率低。 3. **步进梯形图（Step Ladder / STL）方法：** 新增的教学方法，是目前推荐的教学方式。 \[syllabus] 无
There are plenty of courses that will teach you the basics of using and programming PLCs. This course will show you a structured technique that will make your programs robust, readable, and easily maintained by the technicians who will be supporting them. No more support calls at 3:00 am.Since the PLC's inception to replace Relay Logic Panels and to allow Electricians and Technicians to program them with a familiar interface, Ladder Diagram has been the de facto in the U.S.A. PLCs using sequential logic allow the manufacture of just about any product you purchase in the supermarket.Using this technique. You will learn to design machine sequence solutions by using a Grafcet/SFC and and converting it to Ladder Diagram. Allowing your Electricians and Technicians to troubleshoot with a graphical language that they are familiar with.There are multiple ways to implement finite state machines in Programmable Logic Controllers. I will cover two of the techniques that I have been teaching beginning PLC Programmers for several years. One I call the Set/Reset Method and the other I call the PetriNet Method. There are pros and cons to each. Some plants will not allow the use of the Set/Reset Method due to safety concerns. But done correctly it is probably the most popular method used. The advantage of the PetriNet method is that it is easy to convert very complicated Grafcets or SFCs with no or minimal initial mistakes. Be sure to look at Section 9. Added a new method I call STL (Step Ladder Method). This is current preferred method I am teaching students in person now.
