Misunderstanding and view of PLC decryption - Database & Sql Blog Articles

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The technicians who have just walked out of the campus and are not working for a long time are keen on plc decryption. The programming method of learning other people's programs is still understandable. For some people who have been engaged in automation for many years, they are obsessed with PLC decryption and stealing other people's programs. I feel very confused about my own technical level of capital.

I have been working in automation for many years. I have designed large and small projects and compiled a lot of PLC programs. I have not yet understood a program from others. Not my own intelligence is low, but it is too tired to see through.

I once designed a planer planer, using Mitsubishi F1 40MR PLC, wrote a program, a maintenance technician is not very good at understanding the equipment technology of the planer, but obsessed with understanding my program, I told him, You should have a good understanding of the condition and process of the equipment, familiar with the electrical drawings, and find out which aspects of the equipment's operating conditions have not met the requirements of the process (that is, the lack of procedures), write one yourself, look at the information or ask if you can't start. I, I promise that he will thoroughly understand the PLC in three or four months, and you are practicing. At that time, I will abolish my program. However, he is keen to understand every step of my program. I have been asking for more than four years. I haven’t mastered it yet. I still have no way to face the equipment and face the PLC. Four years means a university graduation, which means A graduate student, or even a doctor. And he didn't even graduate from a small PLC. The F series PLC has long been eliminated without a trace. If you are only keen on PLC decryption from knowing other people's programs, this example has already told you that you have entered the misunderstanding and become the target of some businesses and some websites.

What is a PLC program? It is just the process of designing an engineering project. If there are process requirements, there may be a program. The program is only a specific reaction of the equipment process. Understanding the process requirements is equivalent to understanding the program. Programming is just a rule. You need to use this rule to write out the equipment process. Therefore, it is important for you to understand the process of the equipment and the specific use of the PLC brand. When you fully understand the equipment technology, design the electrical drawings, your design tasks can be said to be basically completed, the rest is to look at the plc programming rules, write the program, write the process.

remember! Expensive! When I was at school, the PLC homework was full marks. I knew the ladder diagrams and sentences very well. I also saw a lot of programs in the textbooks. But when I first faced the design, I didn’t know how to start, when I put my program ( There are a lot of problems. When I enter and execute, it takes only a day or two. My feeling is that the PLC is just like this. The feeling of the sky is not the same, but it is not done.

A friend of mine told me that he was in the factory, some equipment was held by some people who had entered the factory early, the PLC was secreted, and the program was not allowed to be read (the program was not compiled by them), so they pressed them and thought Let them level beyond them, I told him that they are just ugly villains who are never grown up (now state-owned enterprises abound), don’t be their successors, and don’t learn their virtues. The most vulnerable, the most levelless, take a good look at the process and learn about the operation of the equipment. I have compiled a series and I don’t know how to study. This is what they are most afraid of.

From the perspective of equipment maintenance, the PLC is encrypted. But we can't decrypt it to understand a program. All roads lead to Beijing, and your own road may be the most shortcut.