In the field of modern industrial automation , PLC ( Programmable Logic Controller ) has become an indispensable control device. There are many PLC brands on the market, including imported European and American brands, Japanese and Korean brands, and domestic brands. So, as an electrical engineer, how to choose a PLC brand that suits you in this flourishing market? This article will provide you with some suggestions.
First of all, we need to understand the basic knowledge of PLC. IEC (International Electrotechnical Commission) has established global standards for all fields of electronic technology, among which IEC61131 is the international standard for PLC. In reference to the IEC 61131 standard, China issued the national standard GB/T 15969 for PLC in December 1995. IEC 61131-3 is the programming language standard for PLC, and has become the de facto software standard for DCS (Distributed Control System), IPC (Industrial Control Computer), FCS (Fieldbus Control System), SCADA (Data Acquisition and Supervisory Control) and motion control systems . Therefore, no matter which brand of PLC you learn, you can learn from it. Next, let's talk about how to choose a PLC brand that suits you. First learn and master a PLC. There are many PLC manufacturers, each with its own characteristics. For those who are new to it, it may feel difficult to know where to start. However, we can choose the appropriate PLC to learn from the beginning according to our region and industry, so as to save more time and energy. In the beginning, there is no need to worry about which brand. You can choose the corresponding product to learn according to your different needs.
Learn from one thing and master other brands of PLC.
For many novices, it is easy to cause confusion whether to learn Siemens or Mitsubishi. The teacher of Sanrenyixing replied: Learning the brand of PLC that you can access and use in daily work is your best choice. After you master one PLC, you can learn from one thing and learn other PLCs. It will be much easier.
Electrical engineers of different natures need to master different numbers of PLCs. For example, electrical engineers in equipment factories only specify one or two PLC brands. They should study and specialize in these one or two brands. However, if they are outsourced electrical engineers, they need stronger learning ability and will be exposed to PLCs of various brands. Therefore, the nature of the work is different, and the breadth of learning will be different, but the total amount of content is similar.
For different equipment and different control methods, it is necessary to reasonably select PLCs, use their strengths and avoid their weaknesses. Japanese Mitsubishi and Omron; German Siemens; domestic Huichuan and Delta are all PLC brands with a high market share. It is recommended to first choose one of these brands with high market share, master it, and then learn from it and learn other brands of PLC. The functions of PLCs of various brands are actually similar, and the instructions are also similar. Don't learn those unpopular PLCs. If you want to learn, you must learn PLC brands that are more widely used, such as the Japanese Mitsubishi, German Siemens, or domestic Inovance mentioned above.