No,its just the other way.the hole thing is working with the abused uno.Now I want to replace the uno with an normal USB TTL converter, to simplify the hardware.But the software on computer does not 'speak' to it like to the Uno (I see the RX LED blinking). The TTL adapter keeps beeing dark.
The only question is, there must be a little difference in the behavior, so that the software can divide between the uno and the adapter.
I did all the things you suggested.but it isnt working. The RX Led doesnt show any transmission if the adapter is connected
the adapter that is connected to serial2 gets no connection to the computer. I does not matter which one I use. ( I also changed the comports in the Sotware so that the address is correct)
I think I tested every possibility of change. Always the same result.The software detects that there is no arduino at the choosen com port and does not work.Funny.
Sorry. First time. wrong rotation.