User manual Version 1.1
SE5408/SE5416 Multi-port
Serial Server
Copyright © 2010 ATOP Technologies, Inc.
All rights reserved. Designed in Taiwan
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UDP
In Fig 12, we show SE5408/SE5416 Multi-Port Serial Server working in UDP mode. In the figure, a serial
device connected on COM1 of SE5408/5416, acting as a client, at IP address of 10.0.50.100 is sending
data to two groups of IP address groups: 10.0.55.22 through 10.0.55.222 with the port number 4670 and
10.0.100.100 through 10.0.100.200 with the port number 4680. As opposed to TCP mode, you need to
specify the client’s local port in UDP mode; for example, COM1 in this case is assigned with the local port
4660. When others send data to COM1, the port 4660 is allocated to capture the data transmission and
the device server passes the data to COM1 serial port of the device server.
In UDP mode, SE5408/SE5416 Multi-Port Serial Server does not support tunneling mode because UDP is
designed to link one device to one or more devices in a connectionless manner while the tunneling
requires one-on-one server-client pair over TCP sockets.
Fig 12. SE5408/5416 Working in UDP mode
