[CLOSED] All Zwave devices gone DEAD

[sihui]

@SiggiFR

by the way: with this restart it switched to ttyACM1

Are you using more than one usb stick on your RPi?
Then you may need to use symlinks (I would do that anyway because of your changing ports [which is not normal if using only one usb device btw]):

Raspberry Pi - Make serial USB ports persistent via symlinks

Usually, USB sticks attached to Raspberry Pi will get assigned ports in an increasing manner such as /dev/ttyACM0, /dev/ttyACM1, etc. This may become a problem whenever you reattach your USB devices to a different port, you add new devices, or you simply reboot your RPi. The reason is that one specified device may be recognized earlier than another while booting the RPi. You could make these ports permanent via so called symlinks and give them more telling names in contrast to ttyACM0. SSH i…