rs232 ethernet converter
rs485 ethernet converterrs485 ethernet converterrs232 to Ethernet
USR-TCP232-410S/$41.60 In stock

Industrial Serial RS232 RS485 to Ethernet TCP/IP Converter Modbus RTU


Power: DC 5~36V (adapter and screw terminal)
1)Multiple serial can work as RS232(RXD TXD GND RTS CTS), RS485(A+ B- GND) or RS422(RX+ TX- GND TX+ RX-).
2) 10M/100M Ethernet port(MDI/MDIX).
Certificate: CE, FCC, ROSH, WEEE.

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USR-TCP232-410S is a Industrial Serial RS232 RS485 to Ethernet TCP/IP Converter for data transparent transmission. It is internally integrated with TCP/IP protocol. User can configure parameter by web server or software to realize remote data acquisition, remote control and management.


  • Modbus Gateway: Modbus RTU to Modbus TCP, Modbus ASCII.
  • Watch Dog: if USR-TCP232-410S break down, it will restart.
  • Built in Web Server/Webpage for configuration.
  • User can modify the webpage.
  • Webpage socket to Serial.
  • Network Printing, limit Client number for serial printer.
  • Various protection: Serial Port, Ethernet Port, Power supply.
  • Support DHCP client: automatically obtain an IP address and query IP address.
  • DNS address can be modified.
  • Synchronous and adaptive Serial port baud rate.
  • HTTP Client: send data as HTTP format automatically.
  • Registration packet: identified header can be added to packets to check connection status.
  • Heartbeat packet: can be sent to serial or network periodic. To ensure connection is reliable, put an end to dead link.


1) Parameter configuration software.
2) Virtual serial port software(VCOM), Windows 2000 or higher (32 bit/64 bit)
Configuration method:
1)Setting Software configuration: please download Setup Software
(USR-TCP232-M4_E45 )
2) Web Server configuration: Please input IP: 192.168.07. Name and Password: admin.
3) AT Command Set
Firmware upgrade via network by Setup Software (User Manual)
Factory Setting:
1) Hardware reset: Pull down Reload for 5 -15 seconds, then release it.
2) Software reset: Enter AT command mode, use AT command AT+RELD.

Work Mode
Serial Device Server USR-TCP232-410S can work as TCP Client, TCP Server, UDP Client,
UDP Server Mode.
1) In TCP Client Mode: Client connects Server automatically. User should configure the TCP Server’s IP address and Port.
2) In TCP Server Mode: The Max Client number is 8.
3) In UDP Client Mode: serial data will be sent to a fix IP address/port which you appointed.
4) In UDP Server Mode: serial data will be sent to last source IP/Port.


  • Industrial automation control for data transmission.
  • Security monitoring, CCTV, entrance guard system, Building automation system
  • Smart home: smart switch, thermos controller.
  • Environmental monitoring, temperature and humidity monitoring.
  • Logistic transportation supervision and location system.

Basic Information
VoltageDC 5 ~ 36V
Current86.5mA@ 5V, 44.3mA@ 12V
Working Temp-40 ~ 85°C
Storage Temp-40 ~ 105°C, 5 ~ 95% RH
Size80 x 62 x 24 mm
Serial Port
2 ports can work simultaneously
SignalRS232: RX/TX RTS/CTS
RS485: A/B/G
Baud Rate600bps ~ 230.4Kbps
Flow ControlRTS/CTS, Xon/Xoff
Data Bit5, 6, 7, 8
Stop Bit1, 2
Check BitNone, Even, Odd, Space, Mark
BufferTX: 2K bytes, RX: 2K bytes
Ethernet Port
Speed10/100 Mbps, Auto MDI/MDIX
ProtocolsIP, TCP, UDP, DHCP, DNS, HTTP, ARP, ICMP, Websocket, HTTPD Client
BufferTX: 16K bytes. RX: 16K bytes
RS485/ RS422 PortRS485: 2KV ESD protection
lighting protection, Overcurrent protection
RS232: 2KV ESD protection, Surge protection
Ethernet Port 1.5KV electrical isolation
Power SupplyReverse protection, ESD protection, Surge protection
Accessory12V1A Power Supply, Serial Cable
Warranty2 Years

User Manual

[Datasheet] USR-TCP232-410s Datasheet | download
[User Manual] USR-TCP232-410S User Manual V1.0.0 | download

Development File

[Customized Webpage] M4 Series Customized Webpage | download
[Demo Code] TCPIP Demo Code | download
[Config Protocol] E45&M4 Series Config Protocol V1.4 | download

Application Software

[USR-VCOM] Virtual Serial Software V3.7.1.520 | download
[USR-TCP-Test] Testing Software | download
[USR-TCP-Test_android] Testing Software | download
[USR-M4] USR-TCP232-M4K3 Setup Software | download

Product Certificate

[Certificate] USR-TCP232-410s KCC Certificate | download
[Certificate] M4 Series CE FCC ROHS WEEE Certificate | download

Company File

[Product Catalog] USR Product Catalog | download


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