Low cost Serial RS232 RS485 RS422 to Ethernet TCP/ IP Converter

Communication Expert of Industrial IOT
Low cost Serial RS232 RS485 RS422 to Ethernet TCP/ IP Converter
Low cost Serial RS232 RS485 RS422 to Ethernet TCP/ IP Converter
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Price: $20.00
Availability: In Stock
Model: USR-TCP232-306
Manufacturer: USR IOT
Average Rating: Not Rated

Buy via paypal Buy it now $45 USD
include $25 shipping cost.

This item does not include power supply & cables!!!

Unique Features

1.5 - 36V wide voltage input

2.Built-in webpage for configuration

3.DHCP, DNS and HTTPD Client function

Important Point: It does not support Flow control / Modbus RTU to TCP

Serial Device Server Introduction

This is a serial RS232, RS485 or RS422 to Ethernet server, used for data transparent transmission. It is a low-cost serial device server, whose function is to realize bidirectional transparent transmission between RS232, RS485 or RS422 and Ethernet. USR-TCP232-306 is internally integrated with TCP/IP protocol. User can apply it to device networking communication.

Serial Device Server Feature

  • Can work in LAN, also across the Internet by gateway, switchws, router
  • Restore factory defaults by hardware and software
  • In TCP Server mode, max 16 TCP Clients can connect with it
  • Work mode: TCP Server, TCP Client, UDP Client, UDP Server
  • Heartbeat packet, ensure connection reliable, can be defined
  • Register packet, check connection status and use as custom packet header
  • Support firmware upgrade via network
  • Query IP address through serial setting protocol
  • Global unique MAC address bought from IEEE, user can define MAC address
  • Support virtual serial port and provide corresponding software USR-VCOM
  • Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS

Serial Device Server Parameter


Speed rate 10/100Mbps, MDI/MDIX
Protection 1.5KV electromagnetic isolation
Buffer TX: 6K byte, RX: 4K byte
Interface RS232/RS485/RS422 *1, choose one to use

RS232: DB9 male connector

RS485: Terminal: A+, B-, GND

RS422: A, B, Y, Z

Baud rate 600-230.4K
Data bit 5, 6, 7, 8
Parity bit None, Odd, Even, Space, Mark
Buffer RX: 4K byte
Protection ESD 2KV
Power input
Voltage 5 - 36 V
Type DC jacker and Terminal
Working current 116mA (average) @ 5V
Working tempreture -25 - 75 °C
Storage tempreture -40 - 105 °C
Storage humidity 5-95%RH (no condensation)
Dimensions 98*86*25 (mm)
Certification CE, FCC, ROHS, WEEE
Download files USR-TCP232-306


Packing List

  • RS232/RS485/RS422 to Ethernet converter *1
  • Serial cable *1
  • Power adapter *1
Work Volt DC 5.0~36.0 V
Work Current 116mA@5V/53mA@12V
Ethernet Port 10/100Mbps auto switch between cross and direct connection
Baud rate 600-230.4K bps
Serial Port
RS232*1 / RS485*1 / RS422*1
Can’t be used at one time
Network Protocol IP, TCP/UDP, ARP, ICMP, IPV4
IP Mode Static IP, DHCP
DNS User-defined DNS server address
Configure Software/Webpage/AT command
Work Mode TCP Server/TCP Client/UDP Server/UDP Client
RFC2217 Supports resemble RFC2217
Httpd Client Supports
Connection Number Connection number with client can be randomly set from 1 to 16 under TCP server mode
Network Buffer Send: 6Kbyte, Receive: 4Kbyte
COM Buffer Receive: 2Kbyte
Avg. Transmission Delay <10ms
Software Virtual-COM, USR-Cloud, Setup software provided
Packing mechanism 4 bytes of packing time, 400 bytes of packing length
Certificate CE & FCC & Rohs
Reliability level 2KV Electromagnetic isolation
Size 98.0*86.0*24.5 mm(L*W*H)
Work Temp -25~75°
Store Temp -40~105°
Work Humidity 5%~95% RH
Store Humidity 5%~95% RH
Package Static Foam
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