This video will show you how to use ESP32 Microcontroller to communicate and control the FX3U PLC using the RS485 Modbus RTU protocol.

Part 2 Link:
   • Control FX3U PLC With ESP32 Part2 (An...  

RS485 Converter
https://www.amazon.com/ConversionHar...

ESP32 Source code
https://github.com/kj831ca/FX3U_ESP32...

Credit and Special Thanks
IBM Watson text to speech for voice using in this video.

My friend company for giving me the FX3U PLC to play with. You can check their website here
https://www.phaseprecision.com/