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Samkoon HMI “Modbus RTU” Sinamics V20 Tutorial

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SINAMICS V20 inverter is a popular series of Siemens inverters with the advantages of versatility, compactness, simple installation, ease of use and cost savings. Although it is a product line with competitive price and savings on investment costs for customers, Sinamics V20 is still integrated with many features of higher-end Sinamics inverter lines, including support for communication by “Modbus-RTU” protocol.

Today will guide you to use HMI Samkoon SK-070HS to control Siemens Sinamics V20 inverter via Modbus-RTU protocol.

Samkoon HMI & Siemens V20 “Connection Diagram”

Below is the RS485 communication connection diagram between the Samkoon HMI and the Sinamics V20 inverter

Sinamics V20 Modbus Parameters Setting

Below are the communication parameters that need to be set up for the Sinamics V20 inverter so that it can be controlled using Modbus-RTU protocol.

Sinamics V20 Modbus Registers Address

>>> Motor Control Address = 099 (dec)
+ Set Word “99” = 1151 >>> Forward Run
+ Set Word “99” = 3199 >>> Reverse Run
+ Set Word “99” = 1150 >>> Stop
+ Set Word “99” = 1278 >>> VFD Reset

>>> Setting Frequency Address = 100 (dec)
+ Speed Reference = (0 to 16384) = (0 to 100%)

>>> VFD Monitoring Address = 109 (dec)

+ Output Frequency Address = 23

+ Output Current Address = 25

+ Output Voltage Address = 32

Samkoon HMI “Modbus RTU” Configuration

We need to set the communication parameters of the HMI exactly the same as those installed for the Siemens inverter.

HMI Programming

+ Control Panel

+ “VFD Ready” Status

+ “VFD Running” Status

+ “VFD Alarm” Status

+ “Reset” Command

+ Setting Frequency

+ “Forward Run” Command

+ “Reverse Run” Command

+ “Stop” Command

+ “Output Frequency” Monitoring

+ “Current Output” Monitoring

+ “Voltage Output” Monitoring

Project Video Tutorial


Related Software and Documents
+ HMI Samkoon Programming Software Download
+ Sinamics V20 Manual PDF Download

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If in the process of using the HMI Samkoon to control the Siemens Sinamics V20 inverter you need any support, please comment below the article, will reply to you as soon as I read the comments.

Best Regards!

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