@wimd Could you share how you done that? I also want to check if gate is alive (backup-batterypowered node - if mains or gateway died, send me a message). I also use domoticz.

When i limit the lenght with send(nikoBusMessage.setSensor(SIMULATIE_LCD_ADRES).set(payload,8)); I get this as output (ascci values of char) : 0;54;1;0;47;3132333435363738 Maybe a bug in library? But indeed the solution with the nul character works fine. Than

@dbemowsk Thank you for the reply. I searched in the meantime and found on the form that 'rs485 on nano' topic describes exactely the same issue I have. I see that you are involved there. I will join that chat as more people are involved.