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System Information Processor Cortex-M4 Basic Frequency 120MHz Flash 512K byte Ethernet Port Number 1 Interface Standard RJ45 Rate 10/100 Mbps MDI/MDIX, auto switch between cross and direct connection Protection 2KV electromagnetism isolation, shell insulation blocking Network Protocol IP, TCP, UDP, DHCP, DNS, https, ARP, ICMP, Websocket, httpsD Client Receive Buffer Max 16k bytes buffer Serial Port Number 2 (RS232/485/422*2), 2 serial ports can simultaneously work at the different working modes. Interface Standard RS-232: TX/RX/RTS/CTSRS-485: A+/B-RS422: TX+/TX-/RX+/RX-Data Bits 5, 6, 7, 8 Stop Bit 1, 2 Check Bit None, Even, Odd, Space, Mark Baud Rate 600 bps ~ 230K bps Flow Control RTS/CTS/Xon/Xoff Buffer Send and receive 2k bytes respectively Protection ESD protection, anti-surge SocketA Transparent Transmission Mode TCP Server/TCP Client/UDP Server/UDP Client Supported Function Networking printing, Modbus Gateway, USR-Cloud, self-defined registration package, self-defined network and serial heartbeat package SocketB TCP Client/UDP Client Software Virtual Serial（USR-VCOM） Windows 2000 or higher (32 bit/64 bit) Configuration Built-in webpage, computer set-up software, serial command Basic Parameter Size 150 x 79 x 30 mm Operating Temp. -40 ~ 85°C Storage Temp. -45 ~ 105°C, 5 ~ 95% RH Input Voltage DC 5 ~ 36V Working Current 95mA (aver) @ 5V45mA (aver) @ 12VPower <1W More Certificate CE, FCC, ROHS, KCC and WEEE pending Warranty 2 years Accessory 12V power supply, serial line, cable, converter 
Model name
Description
1 RS232/485/422 to Ethernet device server
1 RS485 to Ethernet device server
2 RS232/485/422 to Ethernet device server
2 RS232/485 to Ethernet device server
4 RS232/485/422 to Ethernet device server
4 RS485 to Ethernet device server
8 RS485 to Ethernet device server
Basic Function of Serial to Ethernet Servers
Industrial Hardware Design
Industrial solution TI cortex-M4
Watch dog
Hardware watchdog design,
never crash in 24 hours
Serial Ports
Baud rate: 600bps～230.4Kbps
Hardware flow control: RTS/CTS
Software flow control: XON/XOFF
Serial data can be divided into frames flexibly
Serial Port Switching Among RS232/RS485/RS422
Power supply supports Anti-reverse
Wide voltage: 5~36V
Function Structure
Work mode
TCP Server
Serial to Ethernet servers USR-N520 listens on the setting port
and waits for a TCP client connection.
The data which the serial ports sent out transparently
transmit to all connected TCP clients via USR-N520.TCP client mode
Serial to Ethernet servers USR-N520 initiates a TCP connection to the set IP address.
If the connection fails, USR-N520 will keep trying to reconnect until it succeeds.
Once the connection is successful, the data will be transparently
transmitted between PC and serial device in bi-directional.
UDP mode
Serial to Ethernet servers USR-N520 will transmit serial data from serial device to
target network device by UDP connection.
USR-N520 will listen to port and transmit all received data to serial device.
httpsD Client
Supports https Client mode which can transmit serial data to the https server in https format(GET/POST).
WebSocket
Supports WebSocket Sever，
Built Websocket link with devices by Websocket of webpage HTML5
Data transmission between built-in webpage and serial port in bi-directional
Custom webpage and websocket are acceptable
Achieves the functions of displaying data in real-time
Virtual Com Software
Features
Socket B function
Serial to Ethernet servers USR-N520 supports the secondary network link, which can send data to two servers.
Used for data backup, remote diagnosis, and other requirements.
Serial & Network Heartbeat Packet
Network Heartbeat Packet: Serial server maintains the normal connection with the server by sending heartbeat
packet regularly. Serial Heartbeat Packet: Serial server informs serial device is active, can be applied in
actively catching sensor data.
Support modbus gateway
More function
Customize webpage, Synchronized baud rate,
net printing, registration package, cloud
Application
[ Unattended Weighing System]
Connect serial to Ethernet servers USR-N520 to barrier gate and it can realize remote
control of barrier gate by Ethernet in control center.
