With the acceleration of people's life rhythm, the pace of scientific and technological development is also accelerating. Technology brings us a lot of convenience and help.The serial to Ethernet device server is the core crystallization of the development of science and technology. Because of its wide range of applications, many applications can be involved. It is mainly used in POS system, building automation system, self-service banking system, access control system, attendance system, canteen, telecommunications room monitoring, power monitoring and so on.
TCP/UDP communication mode: In the TCP/UDP communication mode, two serial to Ethernet device server can be used at the same time, one as the client and the other as the server, and an IP address connection is established between the two through the port number to realize transparent two-way data transmission. UDP communication mode is suitable for TCP/IP network, which can replace the bus connection between two serial devices.
Four SOCKETs can be connected at the same time, and each SOCKET can be separately configured as TCP Server, TCP Client, UDP Master, UDP Slave, to meet different application scenarios of users.
(1) TCP server mode-The serial to Ethernet device server listens at the local port and waits for the client to connect. After the connection is successful, it can send and receive data in both directions.
(2) TCP Client mode-serial to Ethernet device server actively connects to the user's server, and after successful connection, it can send and receive data in both directions.
(3) UDP Master mode-The serial to Ethernet device server sends UDP data to the configured remote IP and port, and only receives data from the configured remote IP and port.
(4) UDP Slave mode-The serial to Ethernet device server listens to UDP data on the local port and sends and receives data to and from the client that has communicated with it most recently.
By using virtual serial communication mode, one or more converters can be connected to a PC at the same time and provide two-way transparent transmission.
The computer virtual serial port software for managing the following converters can complete the "one-to-many" converter connection. Using N virtual serial ports can correspond to M converters (N < = M) to form a "one-to-many" mode.
Serial devices using virtual serial communication mode can be connected to 485 or 232 computer devices and control and manage them.
User-defined packet: In the TCP Client and UDP Master modes, the user can define the login packet, heartbeat packet, and user packet prefix.
Users do not need to build their own platform: through the human cloud platform, users can realize data transmission and exchange with other IOT cloud devices without building their own platform.
The device integrates many network protocols: the serial to Ethernet device server device integrates TCP, UDP, DNS, DHCP, PPPoE and many other complex network protocols and SOCKET socket standards, and provides TCP Server, TCP Client, UDP Server, UDP Client, multiple communication protocols, for the user's serial device to easily achieve the function of network transmission.
The serial to Ethernet device serverDHCP automatically obtains the IP address: the serial to Ethernet device server device can automatically obtain the IP address by using the DHCP, and can automatically obtain the IP address in the local area network, A DHCP failure uses the IP address configured by the user.
Dynamic domain name resolution: The device supports DNS dynamic domain name resolution and can connect to the server without a fixed IP.
The application program on the computer is a data communication program which is based on the network communication mode and depends on the SOCKET protocol, and the relevant information supporting the SOCKET protocol is directly searched in the converter setting, and then the selection is made.
The network access control management system on the market is generally connected with the bus, and the bus communication distance is very narrow, mostly within 1200 meters, and the access control design will take into account the space layout and cable wiring.
As a result, the existing Internet TCP/IP access control system is not subject to planning and control factors: the difficulty of wiring, communication distance, and the technical content of products provided to users are enough to make the TCP/IP network access control system important, especially important and critical in security engineering.
Also because the new way of use can quickly transform the traditional access control machine into TCP/IP network access control machine, the cost is relatively high, and the traditional access control machine is incompatible with the installation of access control.
Based on the compatibility and harmony between serial to Ethernet device server and traditional access control system, the TCP/IP network access control system can be "modified" with only a slight upgrade. It can also be compatible with the original access control machine (that is, there are both network access control machines and traditional access control machines) for network deployment.
For the application of security access control products, the special detection and upgrade of transparent transmission parameter settings have the advantage of being visible to the naked eye in the face of the traditional serial to Ethernet device server with obvious differences.
The function of the serial to Ethernet device server is to provide the function of converting serial ports to Ethernet, which can convert RS232, RS485 and RS422 serial ports into TCP/IP network interfaces. Maintain the function of bidirectional transparent transmission of statistical data between RS232/RS485/RS422 serial port and TCP/IP network interface.The serial port device can immediately have a TCP/IP network interface function, can be connected with a network to immediately carry out data communication, and can improve the communication distance of the serial port device.