User’s Manual Version 1.3
Airolinx Wireless Serial-Ethernet Server
STW-601C
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2.2.1 Virtual COM Mode
The Virtual Com software emulates a serial port with Internet or LAN topology. In the Virtual COM Mode,
COM data is converted to Ethernet format. By creating a virtual COM port on a PC, the Virtual COM
driver redirects communications from the virtual COM port to an IP address (and the designated port
number). Figure 2 illustrates a Virtual COM connection diagram.
TCP Server in Virtual COM Mode
STW can be configured in the TCP server mode (with respect to the device as “Client”) with a unique IP
and Port number, and it waits passively for the computer to establish a connection with the serial device
(the client). After the connection is established, data can flow in both directions at the same time.
Fig. 2. TCP Connection in Virtual COM Mode
Configuring STW to TCP server
Using one of the four configuration methods (Telnet, Web, console and LCM controller)
, one may configure
STW to a TCP Server.
1. IP filter disabled (default)
2. Default STW port number 4660
3. If IP filter is enabled, only the source IP assigned is allowed to be connected to STW.
TCP Client of Virtual COM Mode
STW can be configured to TCP Client mode (with respect to a Host) to establish a TCP connection to an
application server, or the Remote Control Host. Once the connection is complete, multiple hosts of STW
can exchange data with several devices at the same time.
