Industrial Serial to Ethernet Converter/Modbus Gateway

USR-N510 is an Industrial Serial to Ethernet Converter to realize bi-directional transparent transmission between RS232/RS485/RS422 and network with function of modbus gateway.

  • 3-in-one serial port, RS232/RS485/RS422
  • Hardware Watchdog, keep to work stable
  • Modbus RTU -TCP, websocket: Web to serial
  • MQTT/SSL special firmware (contact sales)

Introduction of Serial Ethernet converter

USR-N510 is a three-in-one serial ethernet converter which can realize bidirectional transparent transmission between RS232/RS485/RS422 and Ethernet. Simple settings via webpage or setup software can assign working details.

USR-N510 is based on ARM processor and it is internally integrated with TCP/IP protocol. User can easily realize embedded device networking.


Industrial SolutionTI Cortex M4 Solution, work temp at -40~85C
Power SupplyDC/Terminal type 5V~36V
Serial PortRS232/RS485/RS422, 3-in-1 serial port
Serial SignalRS232: TX/RX, CTS/RTS
Flow ControlSoftware: XON/XOFF
Modbus GatewayModbus TCP to Modbus RTU in bi-directional
Modbus Polling
Advanced Character-Network Printing
-Web socket: Serial to Webpage
-Modify MAC
-Hardware watchdog
-ARP of server domain name
Work ModeTCP Server/ TCP client/ UDP Server/UDP Client/ HTTPD Client
Built-in web pageCustomized web page is acceptable
ProtectSurge Protection, ESD 2KV, for more harsh industrial environment

Application Field For Serial Ethernet Converter

  • Industrial data transmission, industrial automation
  • Security and protection monitoring, public security
  • Smart home, power control, environmental monitoring, intelligent agriculture
  • Door check on work attendance system, POS system, rice selling system
  • Building automation system, power monitoring, self-service banking system, telecom machine room monitoring


System Information
Basic Frequency120MHz
Flash512K byte
Port Number
Interface Standard8 pin RJ45
Rate10/100 Mbps MDI/MDIX, auto switch between cross and direct connection
Protection2KV electromagnetism isolation, shell insulation blocking
Network ProtocolIP, TCP, UDP, DHCP, DNS, HTTP, ARP, ICMP, Web socket, Httpd client
Receive BufferMax 16k bytes buffer
Port Number1
Interface StandardRS-232: DB9 pin type, RS-485: 2 wire (A+,B-), RS-422 (A,B,Y,Z)
Data Bits5, 6, 7, 8
Stop Bit1, 2
Check BitNone, Even, Odd, Space, Mark
Baud Rate600bps ~ 230.4Kbps
Flow ControlRTS/CTS
BufferSend and receive 2k bytes respectively
ProtectionRS-485: anti-static 2KV, lightning protection
RS-485 Pull-up and Pull-Down Resistor2.2 KΩ
Virtual Serial(USR-VCOM)Windows 2000 or higher (32 bit/64 bit)
ConfigurationBuilt-in webpage, computer set-up software, serial command
Basic Parameter
Size80 x 62 x 24 mm
Operating Temp.-40 ~ 85°C (industry)
Storage Temp. -40 ~ 85°C, 5 ~ 95% RH (no condensation)
Input VoltageDC 5 ~ 36V
Working Current53mA @ 12V
Warranty2 years

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