RS232 / RS485 Serial Wireless Server, Serial to WiFi and Ethernet Converter

USR-WIFI232-630 wifi serial server is a wifi networking server, which is used for project of RS232/RS485 serial equipment to WIFI or Ethernet networking.

  • 5-40V Power supply
  • 2 Ethernet Port, serial to Ethernet or Ethernet to WIFI
  • Modbus RTU to Modbus TCP Support
General Details

Introduction of RS232 / RS485 Serial Wireless Servers

USR-WIFI232-630 wifi serial server is a wireless networking server, which is used for project of RS232/RS485 serial equipment to WIFI or Ethernet networking. and It has 2 channel RJ45 port.

Feature of RS232 / RS485 Serial Wireless Servers

  • Httpd Client: serial data submitted to server by HTTP (GET/POST)
  • Websocket: support bidirectional transparent transmission between built-in webpage and serial
  • DNS/DHCP: support dynamically to acquire domain and IP
  • Username/Password Verification
  • Modbus: support mutual conversion between Modbus TCP and Modbus RTU
  • TCPB Function: support 2 network links and send data to 2 targets
  • Customized MAC: users can define the MAC address by themselves
  • Built-in Webpage
  • Firmware Upgrade through Webpage
  • ID Registration: send ID package when TCP establishes connection,or each data automatically increases ID packet header
  • Virtual Serial Software (USR-VCOM) automatically connect devices
  • Baud Rate Sync: network protocol dynamically sets serial parameter
  • 485 Protection: overcurrent protection, lightning protection, anti-static
  • Power Protection: reverse connection protection, anti-static, anti-surge
  • ESD Protection: pass the test of 8KV contact discharge

Function comparison of RS232 / RS485 Serial Wireless Servers

RS232 / RS485 Serial Wireless Servers

Application Field of RS232 / RS485 Serial Wireless Servers

  • Serial RS232/RS485 to Wifi or Ethernet
  • WiFi remote control and monitoring, TCP/IP and WiFi coprocessor
  • WiFi remote control toy such as aircraft and cars
  • WiFi Internet radio, camera, digital photo frame
  • Medical instrument, data acquisition, handheld device
  • WiFi fatness testing machine, smart card terminal, Smart Home
  • Instrument, equipment parameter monitoring, wireless POS machine
  • Modern agriculture, military field and other wireless related secondary development applications

Structure of RS232 / RS485 Serial Wireless Servers

Wireless Device Servers

Application of RS232 / RS485 Serial Wireless Servers

1.630 Works as AP (equal to WIFI)

wifi server AP Mode

2.630 Works as STA (connect to wireless router)

wifi server STA Mode

3.630 Used to Extend Serial

Wifi Server extend serial

4.Virtual Serial Software (USR-VCOM) Application

Virtual Serial Software

5.Daisy-chained Connection – Double Ethernet Application

Daisy-chained Connection

Simple Transparent transmission

Transparent transmission means that whatever is transferred, our device plays the role of a channel and sends data to the target without modification. On-site monitoring equipment sends data to Wireless Device Servers transparent data transmission terminal by itself port, the terminal CUP receives data by serial port and package data.

Various parameter setting method

Software Settings
Download settings software, search Wireless Device Servers in the LAN through the serial port server IP, name, MAC address, or the version number. Then set the parameters you need, otherwise keep the default.
Web-page Settings

  1. Open your browser and inter the default IP address of the Wireless Device Servers.
  2. Open the login page of Serial Server, Enter the user name and password (default admin).
  3. After setting parameter, Click “Save“ and “Restart“, then setting will take effect.

Serial AT commands Settings
User can set parameter by module itself without going through another computer to configure. This setting method is used in the following situation: user have to configure IP address and destination IP address on site. AT command can meet the demand. After MCU connects serial server module by TTL (UART), MCU can configure setting by AT command.

System Information
ProcessorMIPS solution (32bit 360MHz)
RAM / Flash8M / 1M
Port Number2 (with exchange function)
Interface Standard8 pin RJ45(2 Ethernet: LAN/WAN optional)
Rate10/100 Mbps, MDI/MDIX, auto switch between cross and direct connection
Protction2KV electromagnetism isolation, shell insulation blocking
Network ProtocolIP, TCP, UDP, DHCP, DNS, HTTP, ARP, ICMP, Web socket, Httpd client
Receive Buffer64K byte
Max. Client Number in TCP Server Mode32
Standard802.11 b/g/n
Network ModeAP / Station / AP+Station
STA Number in AP Mode32
Frequency Range2.412 GHz ~ 2.484 GHz
Transmit Power802.11b: +20 dBm (Max)
802.11g: +18 dBm (Max)
802.11n: +15 dBm (Max)
Receive Sensitivity802.11b: -89dbm
802.11g: -81dbm
802.11n: -71dbm
Transmission Rate802.11b: 11 Mbps
802.11g: 54 Mbps
802.11n: 54 Mbps
Transmission RangeMax 400m (open horizon, 3dbi antenna)
Wireless Network SecurityWEP: 64-bit/128-bit data encryption
WPA, WPA2, 802.11i: advanced mode and PSK mode
Encryption: 128-bit TKIP, AES, TKIP/AES
Antenna InterfaceSMA
Port Number2 (1*RS-232, 1*RS-485, can not work at the same time)
Interface StandardRS-232: DB9 pin type
RS-485: 2 wire (A+, B-, GND)
Data Bits5, 6, 7, 8
Stop Bit1, 2
Check BitNone, Even, Odd, Space, Mark
Baud Rate300 bps ~ 460800 bps
Flow ControlRTS / CTS
BufferSend and receive 4K bytes respectively
Protection RS-485surge protection, lightning protection, overcurrent protection, antistatic 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 AT command
Basic Parameter
Size103 x 105 x 28 mm
Operating Temp.-40 ~ 85°C
Storage Temp.-40 ~ 125°C, 5 ~ 95% RH (no condensation)
Input VoltageDC 5 ~ 40 V
Working Current170 ~ 350 mA @ 5V
PowerAP: 170mA @ 5V, STA: 170mA @ 5V, EPHY(1): 210mA @ 5V, EPHY(2): 250mA @ 5V
AP: 60mA @ 12V, STA: 60mA @ 12V, EPHY(1): 80mA @ 12V, EPHY(2): 100mA @ 12V
CertificateTELEC, IC
Warranty2 years
Accessory5V1A power supply, serial line, cable, 3dbi antenna
All USR products will be tested by R&D first, then production test again.(ESD Test,Surge/EFT Test, High/Low Temperature Test, EMC and LVD environment reliability test, etc.) Click here to watch test videos.
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USR products are exported to more than 100 countries and regions, get approvals like CE, FCC, ROHS, CCC, KC, IC, SRRC, etc.
USR product certificate
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