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Samkoon HMI “Modbus RTU” Schneider ATV312 Tutorial

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Hi everybody! Continuing the Series using Samkoon HMI to control peripheral devices through Modbus-RTU communication protocol, today continues to guide you to control Schneider ATV312 inverters by this method.

The HMI model used is Samkoon SK-070HS, both the HMI and the Schneider ATV312 inverter have built-in RS485 communication ports.

Samkoon HMI & Schneider ATV312 “Wiring Diagram”

+ Below is the RS485 wiring diagram between Samkoon HMI and Schneider ATV312 inverter

Schneider ATV312 Modbus Parameters Setting

To be able to control the Schneider ATV312 inverter with Modbus-RTU, we need to set the following communication parameters:

CON – Menu

  • Add: 1 (Slave Address = 1)
    tbr: 9.6 (Baudrate = 9600bps)
    tF0: 8E1 (8bit/even/1bit)
    tt0: 3.0 (Comm. timer check Error)

CtL – Menu

  • LAC: L3
    Fr1: Mdb (Modbus)
    Fr2: Mbd
    Cd1: Mbd
    Cd2: Mbd
Schneider ATV312 Modbus Registers Address

>>> VFD Control Address = 8501 (dec)

  • Set Word “8501” = 128 : VFD Fault Reset
    = 6 : VFD System Start
    = 15 : Forward Run
    = 2063 : Reverse Run
    = 4111 : Stop

>>> Frequency Setting Address = 8502 (dec)

+ Output Frequency Address = 3202 (dec)
+ Output Current Address = 3204 (dec)
+ Output Torque Address = 3205 (dec)

Samkoon HMI “Modbus RTU” Configuration

We need to set the Modbus-RTU communication parameters of the Samkoon HMI and the Schneider inverter exactly the same.

HMI Programming

+ Panel Design

+ “Alarm” Status

+ VFD Reset Command

+ “Ready” Status

+ “Start System” Command

+ Frequency Settting

+ “Run Forward” Command

+ “Run Reverse” Command

+ “Stop” Command

+ Frequency Output

+ Current Output

+ Torque Output

Project Video Tutorial


Related Software and Documents
+ HMI Samkoon Programming Software Download
+ Schneider ATV312 Manual PDF Download

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If in the process of implementing this project you have any difficulties or need any support, please comment below the article, will reply to you as soon as I read the comments.

Thanks and Best Regards!

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