[Question] about Serial Ports

[Hantuch]

Heya, I got a question regarding this library

does the master modbus library completely doesn't work with serial software? I've seen a youtube video of a guy that manages to do this, but i'm not so sure how.

I'm currently trying to setup my arduino Nano as a master, connected to a PM2120. Whilst i could easily use the built-in serial, I can't since i'll be using the only Nano's built-int serial to monitor the results in a PC.

Is there a way so i can specify to the library which ports i want to use? thanks!

[beatagerger]

I would also be interested in the "serial question" and Arduino support...
Do you mean all Arduinos? So Mega+NodeMCU also works?
That would be excellent, because the "big one" doesn't have WLAN, but a lot of analog connections, which NODE doesn't have.
Target:
Mega for HomeAssistant with many analogue sensors + touch display shield