How to distinguish between Mitsubishi plc original machine and high imitation machine: At present, the market of small PLC products in China is very large, and the most used ones should be Mitsubishi series PLC products. However, in recent years, many customers have reported that they have encountered similar Mitsubishi imitations or refurbished goods in the market. A more detailed analysis of some similar Mitsubishi plc and Mitsubishi PLC expansion modules on the market, in order to improve the ability to distinguish between original and imitation machines and refurbished machines.
Now Mitsubishi PLC and Mitsubishi PLC expansion modules are used in China's market. Mitsubishi FX1S series and Mitsubishi FX2N series PLCs and corresponding modules are used. We will analyze these various products with these two products. With the improvement of the imitation level, it is difficult to judge from the appearance alone. Therefore, the distinction between true and false and new and old Mitsubishi PLC and expansion modules is mainly based on its internal circuit board.
Mitsubishi PLC and expansion modules are classified according to the imitation method, which can be divided into: copy board type and self-design type.
First of all, analyze the copy board type. The characteristics of this product are: except for the same appearance, the PCB layout inside is exactly the same. Most of the chips are disassembled, especially the main CPU is disassembled. Pieces. At first glance, I can't really see any flaws, but as long as you open the case, a closer look at the silk screen of the main chip can be seen. The silk screen above is generally polished. Generally, this kind of product is removed by recycling the main CPU of the bad or old Mitsubishi PLC. Because the amount of recycling cannot reach the scale, the screen printing and product batches of these PLCs are different. To this end, in order to make a unified model, the counterfeiters only polished the original silk screen and printed a new model of the same batch, so that it can be seen at a glance that the circuit board has been polished. Of course, there are some higher grinding techniques. Non-professionals generally can't see it. It can only use the background software to view the version number of Mitsubishi PLC and the expansion module to make it stand out. As long as it is 26210, 26212, etc., whether it is 26214 or 26215 is definitely a disassemble, or it is a refurbished goods. The current version of Mitsubishi has reached 26,215. The new machines on the market are generally 26214 and 26215, so it is not the two products that are generally problematic.
Self-designed type: This can be divided into two parts: self-designed and completely self-designed. Partially self-designed means part of the self-design and part of the board. Because the mainland has not yet been able to design Mitsubishi's CPU, the CPU boards are all copied, and the IO board and power board are designed independently. The method of judging this high imitation machine is also the same as the method of judging the type of copy board. Fully self-designed: This kind of high imitation machine is rare in the mainland, generally from Taiwan, and has the highest technical content. It is newly developed from top to bottom, and it is also a solution using Mitsubishi FX2N series PLC. And the program may still directly use Mitsubishi's latest 3G solution. Such products should still have a certain level and technology from the perspective of the appearance and internal process of the entire product. What is even more shocking is that this kind of imitation machine is actually a Panasonic relay, which is the same model as the original Mitsubishi PLC. Speaking of relays, by the way, a brief introduction to the relay industry. As the key component of Mitsubishi FX2N series PLC, the relay is the first. As far as the relay manufacturers on the market are concerned, the PLC-specific relays are used alone. Omron and Panasonic are the first group, and TYCO is in the second group. The other uses are basically few.
So when you get a Mitsubishi PLC or Mitsubishi expansion module in your hand, as long as you look closely, you can determine what the Mitsubishi PLC product belongs to from the model of the relay used by the PLC. If you use the Mitsubishi FX series PLC or Mitsubishi PLC expansion module from your hand at this time, you can see that it is a Panasonic or Omron relay, at least that the products you bought are also top-notch!
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