Dear people,
I am having a Nakamura lathe with Fanuc 18i controller.
I want to send and receive programs on my central computer, so I won't use the RS 232 outlet directly.
But the previous owner of this machine already installed a small magic box in the machine which converts from UTP to RS 232.

I used NCNet lite before, but it can only use a COM port on the computer. So that means from USB (converter).

The UTP cable that I have, will run from the machine to the router.

My question is, how do I send the NC programs from my computer, via the router, to the machine?

I also tried Filezilla, and even though the set-up is simple, I cannot figure it out. My computer/windows/whatever skills are not so high.

So can someone please help me step by step how to set up the communication with the machine?