DIN Rail Ethernet to RS232/485 serial server/Modbus gateway

Mport 3101R




  • RS-232/RS-485 serial interface up to 2kV surge protection
  • Up to 6kV lightning protection on Ethernet interface
  • Modbus RTU/ASCII to Modbus TCP conversion
  • VirtualCOM software management
  • Din Rail installation


The Mport3101R is a serial data over IP device which provides data transmission between Ethernet and serial port (RS-232/RS-485).  It converts serial devices in the field of industrial automation to the communication format of the Ethernet network, so that RS-232/RS-485 devices that were previously unable to access the Internet can be easily and flexibly linked to the network.

These may be used in pairs to establish a physical serial across an Ethernet IP network, and they may also be used with virtual COM port drivers to provide remote RS232/485 ports for computer systems. 

When used in a Modbus environment, they will act as a gateway between Modbus RTU/Ascii and Modbus TCP.  A pre-fetch feature can be enabled to dramatically improve network performance.

This series of products is based on the powerful 32-bit ARM Cortex-M7 main control CPU.

DIN rail Ethernet to RS232/485

Ordering Information

Order Code Description
MW3101R DIN Rail Ethernet to RS232/485 serial server

Quick Start Guides

Mport - Quickest way to connect 2 serial devices over Ethernet

The Mport range of serial devices servers have a mode of operation that allows very quick provisioning of 2 units to create a serial tunnel over an Ethernet network.

This 'Pair Connection Mode' is easy to setup.

On one Mport configure its mode of operation to be 'Pair Connection Master'

More Information