UDP Mode for NPort
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Contents
1What is UDP Server/Client Mode? ............................................................................. 2

2Configuring the NPort DE-211, NPort DE-311, and NPort DE-311M for UDP Mode ..... 3

3Configuring the NPort 5000, NPort W2150, and NPort W2250 for UDP Mode ............ 4

4Configuring the NPort 6000, NPort 2150 Plus/A/-W4 and NPort 2250 Plus/A/-W4for UDP Mode ............................................................................................................ 5

5

Testing UDP Client Mode for the NPort ...................................................................... 6

6Cable Wiring .............................................................................................................. 6Copyright © 2023 Moxa Inc.

Released on Jun 2, 2023

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Moxa Tech Note

UDP Mode for NPort

This Tech Note applies to the following NPort device server models:

1•

NPort DE-211•

NPort DE-311•

NPort DE-311M•

NPort 5100 Series•

NPort 5200 Series•

NPort 5400 Series•

NPort 5600 Series•

NPort IA5150•

NPort IA5250•

NPort 6000 Series•

NPort W2150•

NPort W2150 Plus•

NPort W2250•

NPort W2250 Plus•

NPort 2150A and NPort 2250A Series•

NPort W2150A-W4/W2250A-W4 Series

What is UDP Server/Client Mode?
UDP is a network socket communication protocol that is faster and more efficient thanTCP. In UDP Mode, you can unicast or multi-unicast data from a serial device to one ormultiple host computers. The serial device can also receive data from one or multiple hostcomputers. These traits make UDP Mode especially suited for message display
applications.

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Moxa Tech Note

2UDP Mode for NPort

Configuring the NPort DE-211, NPort DE-311,
and NPort DE-311M for UDP Mode
Before performing the following steps, restore the NPort's default settings by holding
down the reset button for 10 seconds.
Also, please note that for NPort Wireless Plus models, only one network interface (WLANor Ethernet) can be active at a time. To use the Ethernet interface, make sure thenetwork cable is plugged in before powering on the NPort. To use the WLAN interface,make sure the network cable is unplugged when the NPort is powered on.
1. Turn the NPort on. The Ready LED should turn green.
2. Make sure that DIP switch 1 is set to OFF (DE-211 and DE-311).
3. Modify the DIP switch settings for serial communication as required for your device.
4. Make sure that the NPort and the host PC are properly connected to the network.
5. Adjust the NPort's IP settings as necessary so that it is in the same network as yourPC. You may also need to modify the host PC's IP configuration. Make sure you canping the NPort from your host PC.
Remember, the IP addresses of the NPort and the PC must be on the same subnet. If
one IP address is modified, you may need to modify the other IP address.
6. On the host PC, connect to the NPort's Telnet console by entering telnet <NPort's IPaddress> at the command prompt. For example, if your NPort's IP address is192.168.127.254, enter telnet 192.168.127.254 at the command prompt.
7. In the Telnet console under [OP_mode], set Application to UDP Server/Client.
Under More settings, enter the UDP local listening port (4001 by default). Enter IP
addresses as necessary for serial-to-Ethernet transmission and for Ethernet-to-serialtransmission. If no IP address is entered for Ethernet-to-serial transmission, data will
be accepted from any UDP program.
8. In the main menu under [Serialport], adjust the communication parameters asnecessary for your serial device, such as 115200, N, 8, 1.
9. In the main menu, select [Restart] to restart the NPort with the new settings
activated.

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Moxa Tech Note3

UDP Mode for NPort

Configuring the NPort 5000, NPort W2150, andNPort W2250 for UDP Mode
Before performing the following steps, restore the NPort's default settings by holding
down the reset button for 10 seconds.
1. Turn the NPort on. The Ready LED should turn green.
2. Make sure that the NPort and the host PC are properly connected to the network.
3. Adjust the NPort's IP settings as necessary so that it is in the same network as yourPC. You may also need to modify the host PC's IP configuration. Make sure you canping the NPort from your host PC.
Remember, the IP addresses of the NPort and the PC must be on the same subnet. If
one IP address is modified, you may need to modify the other IP address.
4. On the host PC, connect to the NPort's Telnet console by entering telnet <NPort's IP
address> at the command prompt. For example, if your NPort's IP address is192.168.127.254, enter telnet 192.168.127.254 at the command prompt.
5. In the Telnet console under (4) Operating Settings, select the serial port you wish
to configure.
6. Select (1) Operating mode and (3) UDP Client/Server Mode.
7. Select (7) Destination IP address 1 ~ (a) Destination IP address 4 and enter IP
addresses for serial-to-Ethernet transmission. Also, enter the UDP local listening port
(4001 by default).
8. In the main menu under (3) Serial settings, select the serial port you wish toconfigure. Adjust the communication parameters as necessary for your serial device,
such as 115200, N, 8, 1.
9. In the main menu, select (s) Save/Restart to restart the NPort with the newsettings activated.

Copyright © 2023 Moxa Inc.

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4UDP Mode for NPort

Configuring the NPort 6000, NPort 2150
Plus/A/-W4 and NPort 2250 Plus/A/-W4 for
UDP Mode
Before performing the following steps, restore the NPort's default settings by holding
down the reset button for 10 seconds.
Also, please note that for NPort Wireless Plus models, only one network interface (WLANor Ethernet) can be active at a time. To use the Ethernet interface, make sure thenetwork cable is plugged in before powering on the NPort. To use the WLAN interface,make sure the network cable is unplugged when the NPort is powered on.
1. Turn the NPort on. The Ready LED should turn green.
2. Make sure that the NPort and the host PC are properly connected to the network.
3. Adjust the NPort's IP settings as necessary so that it is in the same network as yourPC. You may also need to modify the host PC's IP configuration. Make sure you canping the NPort from your host PC.
Remember, the IP addresses of the NPort and the PC must be on the same subnet. If
one IP address is modified, you may need to modify the other IP address.
4. On the host PC, connect to the NPort's Telnet console by entering telnet <NPort's IPaddress> at the command prompt. For example, if your NPort's IP address is
192.168.127.254, enter telnet 192.168.127.254 at the command prompt.
5. In the Telnet console under [Port], select [Modes] and then select the serial port
you wish to configure. Under Application, select Socket and under Mode selectUDP.
6. Under Description/more settings, enter the UDP local listening port (4001 bydefault). Enter IP addresses as necessary for serial-to-Ethernet transmission.
7. In the main menu, select [Port] and then [Line]. Adjust the communication
parameters as necessary for your serial device, such as 115200, N, 8, 1.
8. In the main menu, select [Restart] to restart the NPort with the new settings
activated.

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Moxa Tech Note

5

UDP Mode for NPort

Testing UDP Client Mode for the NPort

1. Run a UDP client or server program on your PC.
2. Open a Telnet console to the NPort and configure the serial parameters as needed foryour device.
a. For the NPort DE-211, DE-311, or DE-311M, select [Serialport].
b. For the NPort 5000, select (3) Serial settings.
c.

For the NPort 6000, NPort W2150 Plus/A/-W4 and NPort W2250 Plus/A/-W4,
select [Port] and then [Line].

d. For the NPort W2150 or NPort W2250, select (3) Serial Port Settings and then(2) Communication Parameters.
3. Send data from the serial device. The UDP client or server program should receive thedata.

6Cable Wiring

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