With the continuous reduction of PLC price and the continuous expansion of user demand, more and more small and medium-sized equipment begin to use PLC for control, and the application of PLC in China is growing rapidly. With the rapid development of China’s economy and the continuous improvement of domestic automation level, PLC will continue to maintain a high growth momentum in China in the future.

Today’s PLC products can be divided into three major genres: the United States, Europe and Japan. With the rapid development of PLC in China, domestic PLC has become more and more important. According to statistics, the failure rate of these PLC products is more than 95% in power supply, relay and communication port. So how to reduce the failure rate in these places? Gu Mei made these changes to PLC:

External power supply eliminates 90% of faults

Prevent the equipment from being damaged by air, dust, ultraviolet and other factors under the influence of air temperature change and humidity change. The most vulnerable places are generally the power supply system and the communication network system. During the continuous operation and heat dissipation of the power supply, the fluctuation and impact of voltage and current are inevitable. Communication and network are likely to be subject to external interference. The external environment is one of the biggest factors that cause the failure of communication external equipment. At present, PLC in the market is basically built-in power supply, while our products use external power supply to eliminate 90% of faults.

The relay is one of the best brands – Omron

The cost control and type selection of PLC by merchants depend on I/O, and I/O module is an important part of PLC. The biggest weakness of PLC is the I/O port. The technical advantage of PLC lies in its I/O port. In the case that the technical level of the host system is different, the I/O module is the key component reflecting the performance of PLC, so it is also the prominent link in the PLC damage. The relay used by Gumei is Omron, one of the top ten brands in the world.

Special protection of communication port

RS-232 interface has low data transmission rate, limited transmission distance and poor anti-interference ability. RS-422 adopts full-duplex communication mode and differential transmission mode to enhance the ability to resist common mode interference. Gu Mei uses 485 ports, which have higher pressure resistance than 232 ports and are not easy to burn out.

Through these methods, the failure rate of PLC has been greatly reduced, and the volume of PLC is smaller but the performance is better, which has always been recognized by customers.