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Din-Rail RS485 to Ethernet USR-DR302


2 in stock

Din Rail RS485 to Ethernet Converters | Compact Ethernet Serial Servers


2 in stock

Din-Rail RS485 to Ethernet USR-DR302 Introduction

Din-Rail RS485 to Ethernet USR-DR302 can transmit data transparently between TCP/IP and RS485, which are widespread required in industrial automation. USR-DR302 is a Din Rail RS485 to Ethernet Converter, which can transmits data transparently between TCP/IP and RS485. Via web-page or software, rs485 to Ethernet Converter can realize serial data and TCP/IP data package transparent transmission.

Features of Din-Rail RS485 to Ethernet USR-DR302

  • Simple configuration and easy to use.
  • Compact, Light Weight.
  • Supports TCP server/client, UDP server/client, Virtual COM.
  • RS485 Port, Industrial Grade.
  • Standard DIN-rail mounting.
  • Modbus RTU to Modbus TCP.
  • Single RS485 to ethernet converters,RS485 to TCP IP is widespread required in industrial automation.

Working Mode

  • TCP Client
    • Serial to Ethernet converter USR-DR302 will initiate TCP connection to the destination IP address that configured by the user and serial to Ethernet converter will continuously try to reconnect if establishing TCP connection unsuccessfully.
  • TCP Server
    • Serial to Ethernet converter USR-DR302 monitors the set port and waits for a TCP client connection. Data from the serial device will transmit
      to all successfully-connected via serial to Ethernet converter.
  • UDP Client
    • USR-DR302 only communicates with the target interface of the target IP, thus to assure the accuracy of data transmission.
  • UDP Server
    • DR302 can transmit the data automatically to the last time transferred device after receiving the data, which is suitable for multi-network
      devices that need to communicate with the DR302.
  • Httpd Client
    • DR302 supports the function of transmitting the serial data to the specified server in the form of httpsD (GET/POST).


  • Virtual serial software
    • Solve the problem of PC software as a serial port can not communicate with networking device.
  • Identity Heartbeat Packet
    • When 302 works as TCP Client, it can send identity packet packet to TCP server which can be identification. Identity packet can be IMEI code, ICCID code and user editable identity packet.
  • Network Heartbeat Packet
    • Serial server maintains the normal connection with the server by sending heartbeat packet regularly.
  • Advanced protection
    • Level 4 anti-static.
    • Level 3 electrical pulse protection.
    • Level 2 surge protection.
SKU: Din-Rail USR-DR302 Categories: , ,
Description Parameter Value
Hardware Work Voltage DC 5.0~36.0 V
Work Current 130mA@5V
Ethernet Port RJ45,10/100Mbps
Serial Port Baud rate 600-460.8K(bps)
Serial Port RS485*1
Software Network Protocol TCP/IP, UDP, ARP,ICMP,IPV4
IP Type Static IP,DHCP
DNS Support
Configuration Software, Web-page, AT command
Work Mode TCP Server/TCP Client/

UDP Server/UDP Client

Modbus RTU to TCP

Similar RFC2217 Support
httpsd Client Support
TCP Server Connection  Support to connect max 8 TCP client
Network Caching Send: 6Kbyte, Receive:4Kbyte
Serial Port Caching Receive:2Kbyte
Average Transmission Delay <10ms
Software VCOM, USRIOT_Cloud, Setup software, test proforma
Packaging Mechanism 4 bytes package time

1024 bytes package length





Certificate CE, RoHs,FCC
Grade IP30, 1.5KV
Size 71.0×60.0x25.0mm
Work Temp -40~85c
Storage Temp -40~105c
Work Humidity 5%~95% RH
Storage Temp 5%~95% RH

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