Hi VR46, Is it possible that you have mixed up inputs and outputs? Cheers Dirk VR46.... mbvr46@users.sourceforge.net schrieb am Di., 4. Aug. 2020, 11:19: Hi, why my question is ignored? I still have the same problem. I tried already connect VM Ubuntu as CN, and Raspberry Pi 3 as MN. The connection is there, rady flag is also set to TRUE. The data which send the MN i can see in wireshark as a valid number. The data from CN is again =0. The most crazy is with wireshark on CN i can see the value from...