The essence of the serial port server is an industrial communication device that forwards serial port data to the network for transmission. After accessing the network through the serial port server, distance-free connections between devices and devices and computers can be achieved. However, choosing different models of serial port servers for different usage environments can control costs and achieve network data transmission at the same time.
As we all know, choosing a high-quality serial port server can provide long-term stable communication, which can greatly reduce our project construction and maintenance costs. So how to choose a cost-effective serial port server? Here are three factors you need to pay attention to when purchasing:
1. Try to choose a network port that supports baud rate setting, 300bps-115200bps can be selected, start bit/stop bit/parity check is optional, and supports cross-direct connection automatic switching (AUTO-MDIX) serial port server (AUTO-MDIX, It is HP’s patented technology) Its advantage is that users no longer need to consider whether to use a crossover network cable or a direct-connect network cable when making network cables; if products do not support this function, in some switch or router environments, if a suitable network cable is not used , it will not work; or the network ports of the two serial servers are directly connected and a direct connection line is used at the same time, it will not work. 300bps-115200bps adaptive network port can adapt to more complex networks.
2. The operating temperature range of the serial port server can be divided into two levels: commercial grade and industrial grade. The industrial production temperature range is between -40~85℃, while the commercial grade is generally between 0~70℃. Especially the surrounding environment is more complex and harsh. For example, the outdoor environment is cold, the Gobi beach with severe polarization, and the relatively closed dry and high-temperature environment may have exceeded the temperature range that the serial port server can withstand after a long period of operation; at this time, only high-quality Only the serial port server can reach the normal operating temperature range within the industrial-grade operating temperature range, making production more stable and efficient. The reason for this difference in temperature range is determined by the main working components of the serial server (crystal oscillator, Ethernet chip, microcontroller and other modules).
3. Since it is a serial port server, the performance of the serial port is also very important. Serial port baud rate generally has standard serial port baud rate, such as 1200, 2400, 4800, 9600, 38400, 115200, etc. However, some customers also use some special baud rates and need to enter them by themselves. It needs to support arbitrary setting of baud rate; check digits include None, Odd, Even, Mark, and Space. Some serial port servers do not support the latter two, which may cause it to be unusable in some situations.
Resumir
The serial port server ZHC1921 independently developed and produced by Zongheng Intelligent Control adopts an independent 32-bit ARM processor, which is fast and highly stable. Imported Ethernet chip, industrial-grade temperature range, the whole machine has 3*24 hours of high and low temperature experimental testing, and has strong temperature adaptability. It has various special functions such as automatic collection/active reporting, local logical processing, one-to-one/one-to-many/many-to-many networking, etc. It has strong scalability and is a very good choice!
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