Brief introduction of PLC
PLC is the meaning of a programmable logic controller. As its name suggests, it is a kind of control switch. Although it is similar to a relay, there are actually many differences. At least at these points, they are very different:
1. From the appearance size, under normal circumstances, the relay control equipment is obviously larger and takes up more space, which makes it a more heavy one, and it is not very convenient to move. At the same time, because of the many lines, it takes a lot of time to install. A cable is criss-crossed. Once an accident occurs, you have to check one root. This process is very painful and the maintenance is very difficult. It’s hard to fix it. As a result, because the lines interfere with each other, how long does it take to work again? What should I do? In contrast, PLCs do not have so many problems. First of all, the PLC equipment is relatively small in size and easy to move. Secondly, the PLC's line composition is highly concentrated, easy to check, easy to install, easy to disassemble, and save labor costs. Finally, PLC has good resistance to external interference, which further reduces the probability of damage, and the stability is very good.
2, in fact, we can also see from the name, PLC is called programmable logic controller, then it must be able to perform programming operations. Don't underestimate this ability, the essence of PLC work is actually concentrated in the programmable words. If the project is controlled by a relay, then you must use it from the beginning to the end. There can be no changes in the middle. If the content of the project changes, please be disappointed. Please remove the device and reassemble it. Above we have introduced the main characteristics of the relay, removed and reassembled? I am afraid that the cucumber dish is cold. Different from the static equipment of the relay equipment, the PLC is very sleek. With programming software such as OPENPCS, PLC equipment can easily change the project control content, which greatly saves the time and labor costs wasted by project changes. Do you say that industrial control personnel can not like such equipment?
PLC equipment that can be used in the steel industry
It is precisely because PLC has so many advantages and practicality, it is widely used in various industries such as steel, petroleum, chemical, electric power, building materials, machinery manufacturing, automobile, textile, transportation, environmental protection and culture and entertainment. Has broad prospects for development. After seeing the huge business opportunities in the PLC industry, many manufacturers have begun to invest in the development and production of PLC. In the dazzling PLC category, if you want to choose a one that is more suitable for you, you should really pay attention. Below, let me say some of my views:
(1) If you want to buy special top-end high-end PLC equipment, it is recommended to buy products from well-known foreign brands. After all, people have a long time to study, and the software and hardware are more powerful. If you don't have such a high standard, if you can use it normally, domestic PLC can also be considered. Although our similar products can not match the highest part of foreign countries, but we can still match the mid-range products, and the price-performance ratio is more advantageous.
(2) If you purchase a domestic PLC, it is best to have multiple communication interfaces. Serial port and Ethernet port should not be mentioned, it is a must. If there is more than one CAN interface, it will undoubtedly greatly improve the efficiency of PLC use, and it is also beneficial to build industrial interconnect in the future.
(3) If there is a PLC that can add IO modules, try to buy this, flexible, convenient, free to add or cut, and the adaptability to the project requirements is greatly improved, why not?
In order to meet the control needs of the majority of PLC industrial control personnel, Shenyang Guangcheng Technology also launched the PLC equipment GCAN-PLC-400 with independent innovation capability. Shenyang Guangcheng Technology GCAN-PLC-400 PLC equipment is a bus module controller integrated with PLC function. It has the characteristics of compact shape and high cost performance. It can be used to connect CAN bus system, Modbus system and distributed bus terminal modules, and these terminal modules can be expanded by modular means.
Shenyang Guangcheng Technology GCAN-PLC-400
The GCAN-PLC series consists of a programmable main control module (GCAN-PLC-400), several GC series IO modules (GC-1008, GC-3804, etc.) and a terminal terminal module. The GCAN-PLC-400 main control module can be connected to all GC series IO modules. Users can choose to expand the IO module according to the actual needs of the site. The number of extended IO modules can reach 32. The GCAN-PLC-400 main control module supports automatic configuration. The user does not need to set parameters on the PC. The main control module will be automatically configured according to the front and rear positions of the inserted terminal module.