SW5502C
Wireless Serial Server
User Manual
Link modes and
Applications
Select UDP radio
button
in the Link Mode options
.
Under the UDP section, you will find the following options
.
1)
Local Port
:
This field specifies the local port number for UDP Link Mode on SW550XC which it will
be listening to and it can be any number between 1 and 65535
.
Note that typically the port number
that is larger than 1024 is recommended to avoid conflicting with the well
-
known port numbers
.
You should match this setting with the remote UDP program
.
Note that this number is usually
called destination port in the remote UDP program
.
2)
Destination IP Address 1 to 4 and
its Port
Numbers
:
Each line of these options can specify the
range of IP addresses and port number that
will be
communicating with SW550XC
.
The user can
define the Begin and End IP Addresses here
.
Four groups of
range of IP addresses are allowed
.
Please check the box in front of that particular line to enable it
.
These
are the IP
Addresses of the
remote UDP programs and the Port
that they are listening to
.
Note that the maximum number of
UDP nodes that SW550XC can handle would highly depend on the traffic load
.
We have tested that
SW550XC can handle
up to 200 UDP nodes
(
with baud rate of 9600 bps, request interval of 100ms,
and data length of 30 bytes
).
For other Serial Settings on the same configuration page please go to
and
for Advanced
Settings please go to
4.5.3 above
.
After finish configuring the Link Mode, please scroll down to the bottom of the page and click on
“
Save & Apply
”
button to save all the changes that you have made
.
5.2
Link Mode Applications
This section describes application options for the TCP Server, TCP Client, and UDP
Link Modes
.
The application
options will define how the serial data communication will be emulated over the network communication link
.
The
user will have flexibility in choosing the suitable application that matches their need for serial data communication
.
5.2.1
TCP Server Application: Enable VirtualCOM
SW550XC will encapsulate control packets on top of the real data when Virtual COM is enabled
.
This will allow the
Virtual COM port on the Windows
/
Linux operating system to access SW550XC’s COM ports
.
The benefit of using
Virtual COM is that rewriting an existing COM program to read IP packets is unnecessary
.
In other words, it is
possible to use an ordinary or legacy serial
(
COM
)
program
.
The conversion
/
virtualization of IP to COM is all done
in the system driver transparently
.
Figure below shows SW550XC in TCP Server mode with Virtual COM enabled
.
Please follow the following steps to enable Virtual COM application in TCP Server Link Mode
.
