Instructiones pro Waveshare hic inveniuntur:
https://www.waveshare.com/wiki/RS485_TO_ETH_(B)
Basically you have just to connect Waveshare and install the software. Deinde sic statuit:
Committitur VirCom, "Device Management", tunc machinatio apparere debet.
Configurare fabrica cum "Edit Fabrica". Libere portum eligere potes, v.g. 502 vel 8899 vel aliquid omnino diversum
Important: Firmware 2.3.0. (135) vel recentior!