Quatech DSE-410D manual Communication Modes, Direct IP Mode, Virtual COM Mode

Communication Modes

The DSE-410D enables communication with serial devices over a LAN or WAN. Serial devices are no longer limited to a physical connection to the PC COM port. They can be installed anywhere on the LAN using TCP/IP or UDP/IP communications. This will allow traditional Windows PC software access to serial devices anywhere on the LAN/WAN network.

Direct IP Mode

Direct IP connections allow applications using TCP/IP or UDP/IP socket programs to communicate with the asynchronous serial ports on the DSE-410D. In this type of application the DSE-410D is configured as a TCP or UDP server. The socket program running on the PC establishes a communication connection with the DSE-410D. The data is sent directly to and from the serial port on the server.

Virtual COM Mode

Use Install Virtual COM to add a driver that provides a Virtual COM port on the computer. The new COM port shows up in the Device Manager. Windows programs using standard Windows API calls are able to interface such Virtual ports. When a program on the PC opens the new COM port, it connects to the remote serial device connected to one of the ports on the DSE-410D.

DSE-410D

After connection, the LAN is transparent to the program and serial device. Applications are able to work just as if the serial device is connected directly to a physical COM port on the computer. The Virtual COM port software converts the application’s data into an IP packet, sends it across the network to the DSE-410D, which converts the IP packet back to serial data and sends the data out the serial port.

To use this mode, the DSE-410D must be set to either TCP/server or UDP/server in the menu with a designated communication port number. The virtual COM driver is the TCP or UDP client.

2 DSE-410D Owner’s Manual – Document Number: 940-0186-100

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