First of all, to understand the knowledge of electricians, to understand if the electrical appliances to control, understand the various executive agencies, and then to understand the working methods of PLC, input and output circuits, and finally understand the corresponding process.
1. To learn PLC, you must first select the PLC of that manufacturer. The internal PLC software of the Japanese company is highly integrated and easy to use. The early applications of OMRON and Mitsubishi were relatively large. Nowadays, Siemens PLC and Rockwell are used a little more because of the trade and international cooperation. (Although learning a brand is very advanced, others will get started quickly, but Human energy is limited. We must use limited energy in the direction of the most widely used, potential, and development. However, we understand all brands of PLC, including imported and domestic ones. Corresponding understanding, for each PLC's features, advantages and disadvantages, these have a better understanding, then in the future will be a rare talent on the market.)
2, PLC is not a single programming technology, it is a system of professional courses. PLC can be broadly considered to be a high-reliability PC with an embedded operating system. First of all, it is necessary to deepen the PLC's own programming language ladder diagram and statement table language. To reach this level you can only read the compiled program and can design some engineering required programs. In this industry also need to use VB, VC + + to achieve serial communication, distributed control system. In some large programs you also need to use database knowledge. (The PLC is very quick to get started but it needs constant efforts.)
3, PLC is a subject that focuses on application direction. So you need to practice a bit more. Don't look down on small projects where you can summarize the logic of the design process. Continue to improve in the summary. For example, each time you go to the site to debug, call the next site program to view, from which you can understand the structure of the program, and what are the differences and other features of the program
I. "PLC Programming Theory, Algorithms and Techniques (2nd Edition)"
This book describes the working process of PLC in detail from PLC principle, programming and other aspects. And introduce a plc programming program for the tutorial. The most exciting part of this book is the introduction of communication methods and communication program design with computers.
Second, "PLC programming and troubleshooting"
This book is for field application engineers, related professional and technical personnel, and pays attention to the reader's own operating ability to improve the tutorial.
Third, "Mitsubishi PLC programming speed and rapid application"
"Mitsubishi plc programming speed and rapid application" is particularly suitable for plc programming beginners to use, so that beginners quickly and systematically grasp the basic knowledge of plc programming tutorials, combined with a large number of engineering examples in the book, by analogy, to enable beginners to quickly get started, Solve practical engineering problems.
Fourth, "Siemens S7-200 series PLC programming instructions and ladder diagram quick start"
This book covers bit logic instructions, numerical comparison instructions, string instructions, conversion instructions, counter/timer instructions, digital operation instructions, interrupt instructions, logic operation instructions, data/data transfer instructions, program flow control instructions, and other instructions. Through instruction function explanation and example explanation, it is helpful to readers to master relevant instructions and ladder diagrams.
V. "CNC Machine Tool PLC Programming"
The book consists of seven chapters, including the general structure of the programmable controller and its basic working principles, fanuc pmc series and simatic s7 series of performance specifications and money, programming software, instruction systems, programming, pmc sequential program examples, plc programming examples .
When you first start learning, you can study specifically for a certain type of PLC, and you can get started with a certain related professional basis within a month.
However, PLC proficiency requires the accumulation of time and experience, as well as individual savvy, and the choice of automatic control industry is changing with each passing day. Engaging in this industry can be said to be learning every day.
IGBT Module
High short circuit capability, self limiting short circuit current
IGBT CHIP(Trench+ Field Stop technology)
VCE(sat) with positive temperature coefficient
Fast switching and short tail current, Low switching losses
Free wheeling diodes with fast and soft reverse recovery
Temperature sense included
IGBT Module
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