Have you managed to solve this issue? I'm struggling with the same error for couple of weeks now: Modbus error decoding or received no data (RTU/ASCII/RTU over TCP)!, check your settings! I can connect easily on Windows10 with the same hardware (waveshare RS485) but no luck on Raspberry Pi with ...

@Antoine How did you get Fakro blinds working with Domoticz? I have Aeon Z-stick gen5 up and working in Domoticz and now I'm struggling to open and close my blinds but to no avail. (I think) I have added one of my blinds to the stick. It is visible on the Hardware/Setup page but missing from Devices ...