Description of product


Ambetronics is leading manufacturer of RS-485 to Ethernet Converter. ERS-485 devices are ideal for applications and devices that require an efficient way of communicating with serial RS-485 devices over an Ethernet network.The ERS-485 is an economical Modbus-to-Ethernet converter that can quickly and easily be added to any device with a RS-485 serial port, making that device Web-enabled. It is a single port serial server, that converts a serial port to an Ethernet Port, thus removing cable length limitations, and allowing for “serial tunneling” of a device through an Ethernet or TCP/IP.

Converting Data From RS-485 To Ethernet:

RS-485 data sent and received on serial ports on the ERS-485 converter are encapsulated in Ethernet packets in a manner that best fits the type of data being transported.
ERS-485 converter (commonly referred to as Terminal Servers or Device Servers) connect RS-485 based equipment across an Ethernet network enabling you to do following things such as:

  • Cable replacement using RS-485 to Ethernet

  • Have virtual COM ports connect PC/servers to remote RS-485 devices over Ethernet

  • Communicate to multiple RS-485 devices at the same time across a network

  • Use ERS-485 Converter to connect Serial PLCs to Ethernet

  • Connect serial equipment over Ethernet with ERS-485 Converter

  • Modbus RTU to Modbus over TCP/IP or Modbus TCP/IP


  • LED Indication

  • Low Cost

  • 10/100Mbps Ethernet

  • TCP/UDP/Telnet Modes

  • DHCP/Static IP Modes

  • Web Based Configuration

  • Low Power

Technical Specifications

Protocols: Support TCP, UDP, DHCP ,HT TP Server-Client, TELNET, Modbus TCP

Speed: 10/100Mbps

Working: Half Duplex

Configuration: In-built HT TP Web Server

Working mode: Support Server and Client

Transmission: 100 meter

Connector: RJ45

Serial interface:

  • Parity bit : None, Even, Odd, Space, Mark
  • Data bit : 5bit, 6bit, 7bit, 8bit
  • Baud rate : 600bps to 460800 bps
  • Flow control : RTS/CTS or XON/XOFF or No flow control
  • Interface protection : 2KV static protection
  • Interface type : RS-485 (D+, D-, SH)

Power Supply:

  • Power input : 5VDC, 1A
  • Consumption : ~1.5W
  • 1 DC jack for power connections


  • Working temperature : -20°C to 55°C
  • Storage temperature : -20°C to 60°C
  • Relative humidity : 5% to 95% RH, Non-condensing


  • Compact Size : 78 mm (L) x 41mm (W) x 24mm (H)
  • Material : ABS Plastic
  • Weight : ~ 100g