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Keyence PLC & YASKAWA V1000 “Modbus-RTU” Tutorial

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Hello friends. Today would like to continue to share the series of articles controlling Yaskawa V1000 inverter via Modbus-RTU standard with RS485 Communication

In today’s post, I will use PLC Keyence in combination with the KV-L21V Module to control the inverter

Wiring Diagram

Yaskawa-V1000 VFD Communication Configuration

In addition to the basic settings related to the Motor, you need to set the communication parameters as shown below.

The register table receives control signals from the PLC

>>> Address “0001H” for Control Run Register

  • Set 0001H = “1” >>> Forward Run
  • Set 0001H = “2” >>> Reverse Run
  • Set 0001H = “0” >>> Stop Run

>>> Address “0002H” for Setting Frequency Run

Status Monitor


PLC Configuration

The project uses Module KV-L21V, you configure as shown below

PLC Sample Program

+ Reset registers when PLC starts running

+ Distributed Read/Write

+ Frequency write command to the inverter

+ Motor Control Run

+ Command Read Response Data

Video Tutorials Step by Step


Yaskawa V1000 Manual PDF Download

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Best Regards!

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