Serial port servers are widely used in industrial automation, power monitoring, telecommunications room monitoring, building automation systems, self-service banking systems and other fields. Serial port servers can provide serial port to Internet, which can convert RS-232, RS-485, RS-422 serial port interfaces into TCP/IP network interfaces, and maintain two-way transparent transmission of statistical data between RS-232, RS-485, RS-422 serial port interfaces and TCP/IP network interfaces. It enables serial port devices to immediately have the function of TCP/IP network interface, network connection to carry out data communication, and greatly expand the communication distance of serial port devices.

Now the technology of serial port servers in China is becoming more and more mature, but there are many choices of serial port servers on the market, and the quality and price are also uneven. Many companies do not fully consider the environment of the project application site when purchasing, resulting in various unstable phenomena during use, which increases unnecessary maintenance costs. So today we will talk about the three important parameters that need to be paid attention to when selecting a serial port server.

1. Serial port server transmission delay

Many companies purchased products online for convenience. After configuration and installation, they found that when using the virtual serial port function, the data transferred from the serial port to Ethernet was often not collected in time, or even lost, which affected and caused losses to the on-site application. This problem occurs because the data stays in the Ethernet protocol stack for too long and cannot achieve low-latency end-to-end transmission. In the final analysis, the serial port server manufacturers have insufficient technical accumulation in product software. These problems are very fatal in some factory automation applications. Therefore, when choosing the serial port server configuration, you must consider the transmission delay to avoid too high a delay, which leads to untimely data collection.

2. It is important for the serial port server to support wide voltage

At present, although the residential electricity voltage in our country is very stable, in many industrial sites, the power supply voltage cannot be fully guaranteed, and the voltage fluctuates greatly, such as 220V AC directly drops to 100V; 24VDC fluctuates between 12~48V. In this case, the equipment is prone to shutdown or damage. When choosing a serial port server, it is best to choose a serial port server that supports wide voltage. After all, in industrial sites, even a one-minute downtime will cause great economic losses.

3. Working status of serial port servers in extreme environments

The lowest temperature in winter in the areas north of the Yellow River, the northwest region, and the three northeastern provinces in China is dozens of degrees below zero, while the outdoor temperature in summer in some provinces in South China and East China is very high. In this case, it will be found that the commercial serial port servers bought online often have problems during use, or their service life is greatly reduced due to salinity, temperature, static electricity and other reasons. The industrial-grade serial port server can operate stably in harsh on-site environments, and the industrial-grade design ensures that its internal components will not age rapidly due to environmental influences.

To choose a serial port server suitable for your own enterprise, you must analyze it from the actual project application environment, brand, technical solution, cost and other aspects. EBYTE serial port server has great advantages in terms of technology and cost performance. EBYTE's serial port server products have passed high and low temperature tests and can work normally in extremely harsh environments.