Plc, also known as programmable controller, is the most important part of electrical control in automation control. It is now widely used in textile, metallurgy, automobile production, food and beverage, electronics manufacturing, chemical, power plant, paper, oil extraction and In the fields of mechanical design and national defense, I have been using PLC for development and design and technological innovation since 2002. Since the second half of 2008, I am committed to bringing my own learning experience and practical experience to PLC teaching. Combine, I hope to cultivate more high-skilled talents for plc programming. Some people want to learn PLC, but I don't know what it is good for me after I finish school. I think that learning PLC has the following help for life and your knowledge structure.
First, you can improve the computer level. To learn PLC programming, we must first learn to install and uninstall various PLC and touch screen software. Typing is of course an indispensable requirement. The application of the menu in the software is equivalent to learning the basic knowledge of the computer. Some people use the computer. It will only be clicked with the mouse. Over time, this is actually a computer blind, and learn PLC programming, keyboard and mouse should be used together. In terms of computer hardware, computer configuration requirements, serial port and external interface are naturally learned in the study.
Second, naturally, I also learned English. The PLC software LD (load), OR, ANB (and block), SET, DMOV (double move) and English help files and English manuals make you have to remember these words and professional English.
Third, equal to your computer language and microcontroller programming language knowledge into the door. PLC mnemonic (instruction table).ST high-level programming language and touch screen macro, D script is actually the prototype of computer C language, MCU assembly language, the role and effect of many instruction codes are the same, PLC programming inside Binary, octal, decimal, hexadecimal and bit elements, word elements, arrays, bytes, 16-bit binary signed integers, 16-bit binary unsigned integers, 32-bit floating point numbers, etc. This is the international standard for computer languages. exactly the same.
Fourth, learn electrical knowledge, electronic technology. Most of the beginners PLC programmers do not have an electrician foundation and do not understand electronic technology. However, after learning and applying slowly, they also learned the self-locking, interlocking, self-holding, electronic technology of the door, or the door. Gate and PWM circuits as well as source drain patterns in PLC input circuits, etc.
Fifth, improve the ability of logical thinking. To write an electrical program for the completion and system mechanical equipment engineering, it is necessary to have a number of equipment actions and processes. In order to complete the equipment function, first select the relevant electrical materials and related component models, draw the circuit diagram, and install the wiring. Initial debugging, programming, perfection, after the performance of the equipment is achieved, it is necessary to write the operating instructions, organize the data, etc., and at the same time, whether the logical relationship between the variables applied in the programming is reasonable, whether there is any contradiction, this Both can provide the logical thinking ability of the programming learner.
Sixth, by analogy, the production process of machinery, pneumatics, hydraulics and various products will become familiar and even proficient from strangers. In dealing with equipment, it is necessary to make contact with these, what splitter, manipulator, electric cylinder, solenoid valve, proportional valve, transmitter, hydraulic transmission, etc., as well as the process flow of the equipment and the guaranteed technical parameters. In order to understand, do your heart.
Seven, exercise self-learning ability. Frequently encountered students or people who want to learn PLC programming, "I want to learn Omron plc programming", "I want to learn Delta PLC programming", "I want school Panasonic PLC programming", "I want to learn servo" and so on, As soon as I heard it, I didn't understand the programming or didn't go into the course content. For most successful programmers, most of them started with a plc of Mitsubishi or Siemens and Omron series. Then after understanding the principle of one type of PLC, other types of PLCs are basically the same, which is exactly the same as learning to drive, learning a car, and other cars will also open. For the servo, many people understand it as the most technically-advanced new industrial control equipment. In fact, the servo is only slightly more complicated than the inverter, and the function is basically the same. It is an actuator with higher control precision than the stepper motor and the inverter. We learn it, nothing more than adjusting the servo parameters and connecting lines like the inverter, it is much simpler than learning PLC programming. In order to learn programming well, in addition to having a good and experienced teacher to understand the relevant knowledge, it is easy to understand and understand the students. It is more necessary for students to learn more and more to consolidate the learning content. At the same time, students need to strengthen their self-learning ability. How to apply the content of learning flexibly to practice and work, you need to slowly understand.
The above is a little experience of my experience in PLC programming and related teaching for more than ten years. I hope that it will be helpful to become a plc programming designer.
Jiangsu Acrel Electrical Manufacturing Co., LTD. , https://www.acrel.com.pk