Hello. Weintek HMI is one of the most commonly used HMIs on the market. Low price, variety, good quality, easy-to-use software, and support for most popular connections today are the advantages of HMI Weintek.

Today thelivingchristmascompany.com will use HMI Weintek MT8071iE to control Siemens Sinamics V20 inverter via Modbus RTU (using built-in RS485 port in both HMI and VFD)

Weintek MT8071iE & Sinamics V20 “Wiring Diagram”

Siemens V20 Modbus RTU Configuration

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

Sinamics V20 Registers Address for Control

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

>>> Motor Control Address = 99 + 1 = 100

+ Set Word 100 = 1151 >>> Forward Run
= 3199 >>> Reverse Run

+ Set Word 100 = 1150 >>> Stop

+ Set Word 100 = 1278 >>> VFD Reset

>>> Frequency Reference Address = 100 + 1 = 101

Sinamics V20 Registers Address for Monitoring

HMI Weintek Modbus RTU Setting

We need to set the same Mobdus communication parameters as set in Sinamics V20 VFD

HMI Programming

+ Main Control Panel

+ VFD “Ready Run”

+ VFD “Running”

+ VFD “Alarm”

+ VFD “Reset Command”

+ Setting Frequency

+ Forward Run

+ Reverse Run

+ Stop Command

+ Output Frequency

+ Output Current

+ Output Voltage

+ Output Speed

Video Tutorial

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Related Software and Documents

• Download HMI Weintek Programming Software
• (Password Extract: thelivingchristmascompany.com)

If in the process of connecting Weintek MT8071iE with Sinamics V20 you encounter any difficulties, please comment below the article, thelivingchristmascompany.com will reply to you as soon as I read it.

Best Regards!