PLC, programmable logic controller, is the most commonly used controller in industrial automation, and it is also the most familiar automation product for electrical automation engineers. Nowadays, with the rise of edge computing, local control equipment such as PLC becomes more important.

Because PLC is common and reliable, it is indispensable in the field of industrial automation, so now people in IT and OT are full of curiosity about PLC. Why is it so "bull" and irreplaceable in many occasions?
Today, in order to uncover the mystery of PLC, the editor deliberately uses Schneider Electric Modicon M262 to do an internal disassembly, to see what special designs this PLC represents the most advanced technology, and why it can achieve both excellent performance and performance. Is it super stable and reliable?

Let me talk about the Modicon M262 PLC first

Speaking of PLC, some people may ask who invented it. In fact, PLC was invented by the Modicon company more than 50 years ago. Later, Modicon was acquired by Schneider Electric and became the PLC brand of Schneider Electric. Modicon M262 is a PLC that integrates logic control and motion control released by Schneider Electric after M580, M340, M241 and other large, medium and small PLCs. It not only has excellent performance, but also has the functions of directly going to the cloud and other Internet of Things. The representative of the current new generation of PLC. So looking at the internal design of such a PLC will also give you the latest understanding of PLC.