SW5501 – SW5502
Wireless Serial Server
User Manual
Link modes and
Applications
Figure 5.15
Reverse Telnet Application in TCP Server Link Mode
Follow steps in
Paragraph 5.1.1
to configure SW550X in TCP Server Link Mode properly
.
Click on the drop
-
down list of the Application option under TCP Server section and switch to
“
Reverse
Telnet
”
to enabled reverse telnet application in SW550X
.
Scroll down to the bottom of the page and click on
“
Save & Apply
”
button to save the changes
.
5.2.8
UDP Application: Multi-Point Pair Connection
It is also possible to setup pair connection application in UDP Link Mode to have more than one Pair Connection
Master or Slave to communicate with each other
.
For example, it is possible to setup one Modbus Master and six
Modbus Slaves in UDP Link Mode
shows an example of one Modbus Master serially connected to a
SW550X, which is a Pair Connection Master in UDP Link Mode, while four other SW550Xs are serially connected to
one or two
Modbus Slaves and configured as Pair Connection Slaves in UDP Link Mode
.
Note that all SW550X
devices are
communicated over the same wireless network
.
Note again that UDP does not guarantee data delivery
and only data would be transmitted over Ethernet or Wi
-
Fi networks while other serial pings are not transmitted
.
If
RS
-
232 data along with its flow control
pin data are required to be exchanged over the network
(
as if COM interfaces
of these devices were connected without SW550X
)
, it is recommended to use Multi
-
Point Pair Connection using
TCP, please see detail
in
Paragraph
5.2.10 below
.
To configure Multi
-
Point Pair Connection in UDP Link Mode,
please see an example and
set the required parameters of each SW550X in
Paragraph
Note
:
the destination IP addresses and port numbers of the slaves need to be equal to the master
’
s IP address and port number
.
Local listening
port numbers of the
slaves need to be equal to the master
’
s destination port number
.
Please see Table 5
1 for an example
.
