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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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Fig 6. Serial devices can be routed via two different subnet networks to a remote monitor
Fig 7 shows SE5408/SE5416 Multi-Port Serial Server acting as a TCP server listening for a connection
request. The host computer, acting as a client, sends a request to the server, which has an IP address of
10.0.50.100, and the destination port of 4660. This means the host computer requests the serial
connection to the device connected on COM1 port of the device server. Note that the TCP port 4660 is the
default port number for the connection to COM1 port of the device server.
Fig 7. TCP server mode of operation for a computer to connect to a PLC device
The SE5408/SE5416 Multi-Port Serial Server series also comes with Virtual COM driver to simulate virtual
COM ports on a host computer for a software connection to serial devices. Basically, the Virtual COM
creates a “bridge” between a serial connection and an Ethernet/IP connection. The setup and
configuration of Virtual COM driver is covered in Appendix A.