What is the 485 serial server ?
The 485 serial port server is a networking device used to connect two or more serial port devices through the network. It allows users to get rid of the limitations of physical cable length, easily connect to Ethernet, and achieve network management and remote control.
The working principle of 485 serial port server
The 485 serial port server makes serial port data stream transmission based on TCP/IP possible. It can connect multiple serial port devices and select and process the serial port data stream, converting the existing RS485 interface data into IP port data. , and then carry out IP-based management and IP-based data access, so that traditional serial data can be sent to popular IP channels without premature elimination of the original equipment, thus improving the utilization of existing equipment. , saving investment and simplifying wiring complexity based on the existing network.
What the 485 serial port server completes is the storage and control of communication data between a connection-oriented RS485 link and a connectionless Ethernet. The system processes various data, processes the serial port data stream from the serial port device, and performs format conversion. Make it into a data frame that can be propagated in the Ethernet; judge the data frame from the Ethernet, and convert it into serial data to send the response to the serial port device.
Application of 485 serial port server
Direct connection mode, this networking mode is simple to wire. Directly connect the network port on the 485 serial port server to the network cable port on the computer to achieve longer distance transmission. The reason why longer distance transmission can be achieved is because the distance from the computer to the 485 serial port server increases.
The heterogeneous networking method and its wiring method are also very simple. Just connect the 485 serial port server to the hub or switch. By setting the IP address of the 485 serial port server, the 485 serial port server can become a node on the Ethernet, so that different devices connected to the 485 serial port server can be connected to the Ethernet.