The function and connection method of the serial port server

What is the role of the Single serial port server? How to make serial devices in the automation technology industry have the ability to connect to the network and connect to the network immediately? The serial port server allows the traditional RS-232/422/485 equipment to connect to the network immediately, and uses the serial port data flow through TCP/IP to analyze and transmit the maintenance to control the hardware configuration of the management device. It is dedicated to the design of the serial to ethernet adaptor. Scheme of jointed highway bridges. The serial port server is like every microcomputer with CPU, real-time operating system and TCP/IP protocol, it is convenient to transmit data between the serial port and computer equipment. People can use computers to store, manage and control remote equipment anywhere in the world through the Internet. The serial port server provides serial port to Internet function, RS232/485 serial port server can convert RS-232/RS485/RS422 serial port communication into TCP/IP network interface, keep RS-232/485/422 serial port and TCP/IP network T Ethernet interface Two-way transparent transmission of statistical data. The serial device can immediately have the function of TCP/IP network interface, and the network connection can carry out data communication, which greatly expands the communication distance of the serial device.

To put it simply, the longest transmission distance of the 485 bus used by general serial devices does not exceed 1200 meters. In order to make these devices transmit data farther, it is necessary to add a serial server so that the serial devices immediately have a TCP/IP network interface. Function, data communication through the Internet, you can access the data of the serial device in any place with the Internet.

In terms of practical application, the serial port server is to map the Ethernet interface of the TCP/IP protocol to a standard serial port under the Windows operating system, and the application program can send, receive and control it like a common serial port. The serial ports COM1 and COM2 can be mapped to COM3, COM4, COM5, etc. through the serial port server. The most commonly used communication interfaces for connecting these devices are RS-232 and RS-422/485 buses. Network architectures such as Ethernet/Internet have gradually been widely adopted in the automation industry, replacing traditional serial communication and becoming the mainstream of automation system communication.

Connection method of serial port server The Ethernet serial port server used here is E810-DTU (1RS1E) of Chengdu Ebyte Electronic Technology Co., Ltd. This serial port server is a single-channel RS232& RS485&RS422 interface serial port server to Ethernet interface RS485 to TCP/IP converter The serial port server realizes transparent data transmission between RJ45 Ethernet port and RS232 or RS485 or RS422 serial port communication. Equipped with M3 series 32-bit processor, it runs fast and has high efficiency. The serial port server has four communication mechanisms: adaptive network speed (up to 10OM full duplex), TCP Server, TCP Client, UDP Server, and UDP Client. A device that realizes bidirectional data transparent transmission between TCP/UDP and serial port. The built-in operating system is more powerful for multitasking, and it is more efficient and stable with the TCP/IP network protocol stack. Support two SOCKETs to work at the same time, WEB page configuration.

E810-DTU(1RS1E) is easy to operate, and the user can directly configure the parameters of the module through the web page. Easy data transfer.