SW5502C
Wireless Serial Server
User Manual
Link modes and
Applications
5
Link modes and Applications
5.1
Link Mode Configuration
SW550XC Series supports different Link Modes which are TCP Server, TCP Client, and UDP
.
The Link Mode
describes the role of SW550XC and the connection between SW550XC device and other remote devices in the
network
which would like to communicate with serial devices on SW550XC’s COM ports
.
Under the three Link
Modes, TCP Server mode can support RAW, Virtual COM, Reverse Telnet, or Pair Connection Master applications,
while TCP Client mode can support RAW, Virtual COM, or Pair Connection Slave applications
.
Note that UDP mode
does not have the same supported applications as the previous two TCP modes
.
Discussion on how to setup different Link Modes properly will be presented in the following sections
.
Figure below
show the Link Mode options for COM 1 port which can be found on COM 1 page
under Serial menu of Web UI
(
See
details on
Serial Settings in Chapter 4.5 above)
.
Figure 5.1
Link Mode Options for COM 1 Port
5.1.1
Link Mode: Configure SW550XC as a TCP Server
SW550XC Series can be configured as a Transport Control Protocol
(
TCP
)
server in a TCP
/
IP network to listen for
an incoming TCP client connection to a serial device
.
Figure 4
.
2 depicts an example of a PLC
(
serial
)
device which
is connected to SW550XC on a serial bus where a remote host computer is sending a request via Ethernet network
.
After the connection is established between the serial device server
(
SW550X
)
and the remote host computer
(
remote TCP client
)
in the figure,
data can be transmitted in both directions
.
This also applies whenever the Virtual
COM
(
VCOM
)
application is running on server mode
.
Please note that this is the SW550XC device
’
s default link
mode
.
Figure 5.2
An Example of TCP Server Link Mode
