Hi Dirk, Yes I have seen the video, which shows little bit uncomfortable way how to enable the erminating resistor.

But the main problem is the RS485 is not working at all. Please look to my first post - I am writing, the RS485 does not work if only RevPi and slave device is connected together ...

Hello All,

I have problem to estabilish RS-485 communication on newly purchased RevPi Connect 5. I am trying to connect to the external Modbus RTU device from Node-RED insalled on RevPi.
Problem is followning:
When I connect directly RS-485 connector to my RS-485 (modbus rtu) slave, there is not ...