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April 23, 2020 Introduction of Serial to Ethernet Converter USR-N520

Serial to Ethernet converter USR-N520 is used to transmit data transparently between TCP/UDP data packet and RS232/RS485/RS422 interface.

It carries ARM processor, low power, fast speed, high stability and two serial port can work as RS232 or RS485 or RS422 serial interface which comfort to industrial standard.



1. ARM base on Cortex-M4 kernel, and reliable TCP/IP protocol stack

2. Industrial working temperature range from -40C ~85C

3. Auto-MDI/MDIX,RJ45 port with 10/100Mbps

4. Support TCP server, TCP client, UDP, UDP server and httpsD client work mode

5. One port corresponding to two socket

6. Support network printing via IP address

7. Function of Modbus gateway, modbus RTU to modbus TCP, modbus multi-host Polling

8. Two serial port, each port can work as RS232 or RS485 or RS422 and work individually

9. Distinguish which serial port connect to device via port number

10. Support virtual serial port and provide corresponding software USR-VCOM

11. Serial baud rate from 600bps to 230.4K bps; Check bit of None,Odd,Even,Mark and Space

12. Support static IP, DHCP/DNS and search devices within network through UDP broadcast.

13. Provide serial and network setting protocol, TCP/IP socket example code such as VB, C++ Delphi,Android,IOS

14. Built-in web page; Customized web page is acceptable

15. Reload button,one key to restore default settings

16. RJ45 with Link/Data indicator light,built-in isolation transformer and 2 KV electromagnetic isolation

17. The global unique MAC address bought from IEEE, also user can define MAC address

18. Upgrade firmware via network

19. Support web port revise (80 by default)

20. Keepalive, detect dead links and reconnect rapidly

21. Support account and password, used to page log in and network settings safely

22. Support one channel Web socket,realize bidirectional transparent transmission between web page and serial side

23. Power supply in two mode, DC adapter or 5.08-2 terminal pin

24. Communication indicator light of two serial port: RX/TX 25. UPD broadcast function, can receive/send data to all IP in the same network


Basic Parameter

Parameter Value
Input Voltage DC5~36V
Working Current 90mA@5V
Operating Temp. -40~+85°C
Power <1W
Storage Temp. -45~105°C, 5~95%RH


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