Hy all,
Thanks for your help. Unfortunately it didn't solved the problem :-(.
I tried it with putting the NODE_ID's om static but that didn't help. MY_PARENT_NODE_IS_STATIC is totally not recognized in the Arduino IDE...
I tried just what @palande.vaibhav mentioned with the code he posted. The only adjustment is that I had to change the CE and CS pin on the sensot because I'm using a Adruino Micro. Further the code was just copy-paste but the same result in the serial communication as I posted earlier. (Except now the ID was 1 in stead of 105...)