Hello @karadev,
I'm Francesca from Arduino.
Arduino Nano is not supported by PLC IDE. This environment was specifically designed for our Solutions: Opta and Portenta Machine Control. You can learn more looking at this post https://forum.arduino.cc/t/plc-ide-with-the-portenta-h7-breakout-board/1116315/2?u=fr4ng
Have a good day!
Francesca