I am using a RS485 to USB module to connect a thermocouple module to my computer. I installed a CH340 driver and the device appears in the device manager.
I ordered the RS485 to USB module of Amazon and only have very limited instructions how to read the information from the thermocouple.

I’m fairly new to Python and even worse with Modbus (didn’t used it until yesterday) so don’t be to hard on me.

I have an Mass Flow Controller (voegtlin red-y smart series) where I want to set the gas volume flow and also read the current gas volume flow and the temperature. The communication is via Modbus RTU. I managed to connect the MFC with the right parameters.
It’s conncected to my PC so no Ethernet usage.