Drives Inverters Guides PLC Guides

PLC Inovance “Modbus RTU” INVT GD20 Tutorial

Written by

Hello friends!
INVT Goodrive 20 inverter is a cheap but extremely good quality inverter, so it is widely used in small machines and basic applications. It also supports the common control methods of the inverter such as keypad control, terminal control, analog control, control via Modbus RTU (RS485).

Today will guide you to use PLC Inovance H3U-3232MT to control INVT GD20 inverter by Modbus RTU communication through RS485 port which both are integrated.

PLC Inovance & INVT Goodrive 20 “Wiring Diagram”

INVT Goodrive 20 “Modbus RTU” Parameters Setting

Here are the settings for INVT G20 communication parameters so that we can control it with Modbus RTU.

  • P00.01 = 2 (Frequency Reference via RS485)
  • P00.06 = 8 (Motor Control via RS485)
  • P00.09 = 0 (A Frequency Selection)
  • P14.00 = 1 (Slave Address = 1)
  • P14.01 = 3 (9600bps)
  • P14.02 = 1 (Modbus-RTU 8bit/Even/stop bit = 1)
  • P14.03 = 5
  • P14.04 = 0.0
INVT GD20 “Modbus RTU” Registers Address

>>> Motor Control Address = 2000 (Hexa)

  • Set Word 2000 = 1 >>> Forward Run
    = 2 >>> Reverse Run
    = 5 >>> Stop

>>> Set Frequency Address = 2001 (Hexa)

PLC Inovance “Modbus RTU” Configuration

We need to configure the communication parameters for the COM.1 port (RS485 Port.) the same as those installed for the INVT GD20 inverter

PLC Programming

+ Add Modbus Block

+ Setup Address & Programming

Project Video Tutorial


Related Software and Documents

+ PLC Inovance H3U-3232MT Software Download
+ Download INVT Goodrive 20 Manual PDF

Password Extract:

If you need assistance in using PLC Inovance to control and monitor the INVT GD20 inverter with Modbus RTU, please comment below the article, will reply to you as soon as I read the comments.

Best Regards!

About the author

Leave a Comment Protection Status