Serial Device Servers & Modbus Gateway

Wuhan Maiwe Communication Co., Ltd. was established in 2001, committing to Industrial Ethernet Switches, EN50155 Switches, Embedded Communication Modules, Device Networking Products, Industrial Wireless Equipment and IIoT related products over 20 years. The products have penetrated into the power, rail transit, industrial automation, new energy, mining, military industry, environmental protection, petrochemicals and industrial controlling fields. Its main products support standard protocol like RSTP, MSTP, VRRP, EAPS, OSFP, Modbus and so on, also have obtained CE, FCC, RoHS, EN50155 and some other international certifications.
  • 1-port RS232/485/422 Serial to 100M Ethernet Opto-isolated Server & Modbus Gateway
Features and Benefits
  • RS-232/RS-485/RS-422 serial interface up to 4kV surge protection
  • Up to 6kV lightning protection on Ethernet interface
  • Support Modbus RTU/ASCII to Modbus TCP conversion
  • Support VirtualCOM software management
  • Support opto-isolation
Online consultation
  • Overview
  • Specifications
  • Download
  • Ordering Information
Product Description

Mport3101-I series products mainly realize the data transmission between Ethernet and serial port (RS-232/RS-485/RS422). This series of products is based on the 32-bit ARM Cortex-M7 main control CPU to realize the function of one Ethernet interface and two serial ports to communicate and exchange data. This series of products converts serial devices in the field of industrial automation to the communication format of the Ethernet network, so that RS-232/RS-485/RS422 devices that were previously unable to access the Internet can be easily and flexibly linked to the network.

Features and Benefits

-One 100M Ethernet RJ45 port and one RS232/RS422/RS485 serial port

-Using 32-bit Arm Cortex-M7 core CPU, up to nearly 400MHz frequency

-External independent hardware watchdog design to prevent crashes

-Lightning protection of Ethernet interface up to 6KV

-RS-232/RS-485/RS-422 interface up to 4KV surge protection

-Provide industrial grade DC power supply DC9 ~ 36V input

-Support Modbus RTU/ASCII to Modbus TCP conversion

-Support VirtualCOMsoftwaremanagement

-Support opto-isolation

Power supply

Working Voltage


Working current


Network port

Network port type

10 / 100Mbps, RJ45 interface; adaptive MDI / MDIX cross-connect and auto-flip

Isolation protection

1.5KV isolation protection

Serial port

Number of serial ports

1 * RS232/RS485/RS422 working mode, choose one of three

Baud rate

600~460800 (bps)

Data bit 7, 8
Stop bit 1, 2
Validation modes none, odd parity, even parity


DB9 for RS232, ternimal blocks for RS485/422

Isolate power supply 2kV



±8kV(contact); ±15kV(air)


Power supply: ±4kV / common mode, ±4kV/ differential mode

RS485/ 422: ±4kV / common mode, ±4kV/ differential mode

Network port: ±6kV/ common mode, ±4kV/ differential mode


Power supply: ±4kV Communication port: ±2kV

Mechanical structure


96mm*26mm* 90mm (length* height*width)

Working environment

Operating temperature


Storage temperature


Relative humidity

5%~95% (no condensation)

Software parameters

Network Protocols


IP acquisition method

Static IP/DHCP



User configuration

Web configuration

Simple transparent transmission



Support Modbus RTU / ASCII to Modbus TCP (Master and Slave Mode)

Support Modbus Over TCP

Modbus TCP to Modbus RTU

Serial port packaging mechanism

Time and length can be set;

The default value varies according to the bit rate;

The maximum packing length is 1460 bytes.

TCP Server connection

Support up to 8 TCP connections

Network cache

Send: 16Kbyte; Receive: 16Kbyte

Serial port cache

Send: 1.5Kbyte; Receive: 1.5Kbyte;

Flow Control

Auto Flow Control

Heartbeat bag

Support network port custom heartbeat package

Average transmission delay


Supporting software

Network Configuration Tool, VirtualCOM, MWView, MaxView

Ordering information


1 RS232/RS485/422 serial device networking server, DC9 ~ 36V wide voltage input, opto-isolation
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