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Weintek MT8071iE “Modbus RTU” Danfoss FC51 Tutorial

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Hello friends!
Weintek MT8071iE monitor is a cheap but very good quality monitor, it supports all basic communication ports such as Ethernet, RS232, RS422/485… and of course it supports Modbus-RTU Communication.

Today will guide you to use MT8071iE to control Danfoss FC51 VFD via Modbus-RTU (Danfoss FC51 also has a built-in RS485 port)

Weintek MT8071iE & Danfoss FC51 “Wiring Diagram”

Danfoss FC51 Modbus RTU Configuration

In addition to the basic parameters of the inverter installed according to the motor (frequency, voltage, current …) then we need to set the communication parameters as follows

Registers for Control

Note: Weintek MT8071iE Modbus Address
= “VFD Address (dec) +1”

>>> VFD Control Address = 49999 + 1 = 50010

+ Set Word 50000 = 1148 (dec) >>> Forward Run
= 33916 (dec) >>> Reverse Run
= 1084 (dec) >>> Stop
= 1212 (dec) >>> VFD Reset

>>> Frequency Reference Address = 50009 + 1 = 50010

+ Frequency Reference = 0 to 16384(dec) ~ (0 to 100%)

Register for Monitoring
  • Voltage Output Address = 16120
  • Frequency Output Address = 16130
  • Current Output Address = 16140

Weintek MT8071iE Modbus-RTU Setting

We need to set the communication parameters for MT8071iE the same as those installed in Danfoss FC51

MT8071iE Modbus RTU Example

+ Control Panel Design

+ VFD Ready Control

+ VFD Running Status

+ VFD Alarm Status

+ VFD Reset Alarm

+ Forward Run Control

+ Reverse Run Control

+ VFD Stop Command

+ Frequency Setting Command

+ Read Output Frequency

+ Read Output Current

+ Read Output Volatge

Project Video Tutorial


Related Software and Documents

+ Weintek EasyBuilder Pro Software Free Download

+ Danfoss FC51 Manual PDF Download (Password Extract:

If in the process of making the connection between MT8071iE and Danfoss FC51 you have any difficulties, please comment below the article, will reply to you as soon as I read the comment.

Best Regards!

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