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RS485 Serial to Ethernet Converter, USR-TCP232-304


Out of stock

SKU: USR0-304Code: USR-TCP232-304

US$ 33.11

Out of stock


This is a quality interface converter from USR. Their products are known for their quality, good documentation and easy to use software.

The USR-TCP232-304 is a low-cost serial RS485 to Ethernet interface converter. It can be used for bidirectional transparent transmissions between RS485 and local Ethernet or Internet. It has built in TCP/IP protocols, and many advanced features normally found only in more expensive devices! It can be configured via built in webpages, and firmware is network upgradable. This device is very well built, and is supplied in a sturdy metal enclosure. It is manufactured with high quality components, and the latest PCB assembly techniques.

This product consists of the following:
  1 x Genuine USR-TCP232-304
  1 x Australian Wall Mount Power Supply, 5V, 1A, 2.1mm Connector

Additional information is available on USR's product site.

Additional information is available on https://www.usriot.com/products/rs485-to-ethernet-converter.html

This product will be shipped via eParcel from Sydney (except if you upgrade to express post during checkout).

Features of RS485 to Ethernet Converters

  • Support DHCP, automatically obtain an IP address and query IP address through serial setting protocol
  • Support DNS function
  • Set parameters through webpage
  • Upgrade firmware via network
  • Auto-MDI/MDIX, RJ45 port with 10/100Mbps
  • Serial port baud rate from 600 bps to 230.4 Kbps, Check bit of None, Odd, Even, Mark and Space
  • Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
  • Support virtual serial port and provide corresponding software USR-VCOM
  • Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
  • User-defined registration package mechanism, check connection status and use as custom packet header
  • Under TCP Server mode, Client number ranges from 1 to 16; default number is 4
  • The global unique MAC address bought from IEEE, user can define MAC address
  • Restore factory default
  • Across the gateway, switches, routers
  • Can work in LAN, also can work in the Internet (external network)
  • Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
  • Support customization

Application Field of RS485 to Ethernet Converters

  • 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 
Port Number1
Interface StandardRJ45
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
BufferSend: 6K bytes, receive: 4K bytes
Port Number1
Interface StandardRS-485: 3 wire (A+, B-, GND)
Data Bits5, 6, 7, 8
Stop Bit1, 2
Check BitNone, Even, Odd, Space, Mark
Baud Rate600 bps ~ 230.4 Kbps
Flow ControlNull
BufferReceive: 800 bytes
Virtual Serial(USR-VCOM)Windows 2000 or higher (32 bit/64 bit)
ConfigurationComputer set-up software, serial command, built-in webpage
Basic Parameter 
Size71 x 60 x 25 mm
Operating Temp.-25 ~ 75°C
Storage Temp.-40 ~ 105°C, 5 ~ 95% RH
Input VoltageDC 4.75 ~ 7V
Working Current150mA @ 5V
Warranty2 years
Accessory5V1A power supply

Additional Information, Software & Documentation

  • User Manual: https://modtronix.com/mx-m/usr/usr-tcp232-304_user_manual.pdf
  • Datasheet: https://modtronix.com/mx-m/usr/usr-tcp232-304_datasheet.pdf

For additional Information, Software & Documentation, see the product page on USR's website.

For additional Information, Software & Documentation, see the product page on USR's website:

Modes of operation

This product can be used for:

    • TCP Client Mode
    • TCP Server Mode
    • UDP Mode
    • HTTP Client Mode

Typical Applications:

Package Includes

1 x Genuine USR-TCP232-304 (RS485 Serial to Ethernet Converter)
1 x Wall Mount Power Supply, 5V, 1A, 2.1mm Connector, Austalian Blades

Weight220 g

Wired Technology