Hello, in previous posts thelivingchristmascompany.com used some PLCs, HMIs to control Siemens Sinamics V20 inverter through Modbus RTU (RS485).

Today thelivingchristmascompany.com would like to continue to guide you to use LabView software to control Sinamics V20, this is a software with a beautiful interface and extremely versatile.

Computer & Sinamics V20 “Connection Diagram”

Sinamics V20 Modbus RTU Configuration

We need to set the following communication parameters so that Sinamics V20 can be controlled by Modbus RTU

Registers 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

>>> VFD Frequency Setting Address = 100

Registers Monitoring Address

+ Frequency Output Address = 23

+ Speed Output Address = 24

+ Current Output Address = 25

LabVIEW Modbus Programming

+ Front Panel Design

+ Block Diagram

Video Tutorial

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