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Sinamics V20 “Modbus RTU” via Modbus Poll

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Hello friends. Sinamics V20 is a small general-purpose inverter from Siemens. It can be controlled by various methods including Modbus RTU.

Today will guide you to control Siemens Sinamics V20 easily through Modbus Poll software. We need to prepare the “USB to RS485” cable

Sinamics V20 & Computer “Connection Diagram”

Siemens Sinamics V20 Modbus RTU Configuration

To be able to control Siemens Sinamics V20 with “Modbus RTU” we need to configure the following communication parameters

Register for Control Address

+ VFD Control Address = 99

  • Set Word 99 = 1151 >>> Forward Run
    = 3199 >>> Reverse Run
  • Set Word 99 = 1150 >>> Stop
  • Set Word 99 = 1278 >>> VFD Reset

+ Frequency Reference Address = 100

Register for Monitoring Address

+ Frequency Output Address = 23

+ Speed Output Address = 24

+ Current Output Address = 25

Modbus Poll Programming

+ Frequency Setting

+ VFD Control Command

+ Data Monitoring

Project Video Tutorial


Related Software and Documents

+ Modbus Poll Software Free Download
+ Siemens Sinamics V20 Manual PDF Download

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If you have any questions, need help connecting Modbus Poll software with Siemens Sinamics V20, please comment below the article.

Thanks and Best Regards!

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