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The popularization of Internet, "let all equipment connected to the network" has become the consensus of the enterprises all over the world. In order to keep up with the trend of network automation, so as not to lose the competitive advantage, we must build a high grade data acquisition, production monitoring, real-time cost management network system. Using to control the management of the hardware serial data stream transmission based on TCP/IP, no need to invest a lot of manpower and material resources, to carry on the management, replacement or upgrade.

The embedded network module which based on TCP/IP serial data stream transmission is possible, in general serial server module itself is not with RJ45 interface. This can be serial server module is connected to the user's PCB, users can choose according to the placement of the RJ45 interface. Module pin can be directly and RJ45 interface. Since then the serial data sent by the user is sent to the network, the network data received from the serial port to receive. The need for hardware flow control situations may also need to provide RTS, CTS flow control pin. Embedded serial communication module is only solved the serial port data embedded equipment into Ethernet data, but the PC end (also is responsible for receiving network data terminal PC) how to receive, process the data?

Embedded serial communication module is only solved the serial port data embedded equipment into Ethernet data, but the PC end (also is responsible for receiving network data terminal PC) how to receive, process the data?

(1) the socket communication directly: the user through the windows network programming directly calls the socket API function, through the UDP, TCP/IP protocol and serial port server module communication. The methods require the user to have certain network programming.

Virtual serial port (2): here to introduce a new concept of virtual serial port. Virtual serial port and hardware serial port hardware serial port is different, it exists the COM port on the computer, such as COM1, COM2, virtual serial port using Windows virtual equipment technology, in a virtual serial port driver, in the upper software seems to use the serial port and serial port can be a kind of hardware. Such as serial port server module with PC software virtual a COM5, then the COM5 and a serial port server module binding, communication and user program can read and write COM5 to realize and serial port server module.