Hi to All,

The hardware of my project is consisting with a raspberry pi3 b+ and a pico ups 3.0. As suggested in many thread the grateful shutdown is managed by the ups. A simple codesys application manage some automations in my home.
When the power is down the ups runs the "sudo shutdown" and all persistent variables keep their values. The system freezes when voltage fluctuations occur.

• Is there any solutions to avoid this trouble?
• There are other solution able to cooperate with ups to avoid the trouble?

Thank You for help me,

Regards
Luca

this was here:
https://forge.codesys.com/forge/talk/Runtime/thread/4b2cd65c12/
but not sure if you see the same issue.

I would recommend to start the plc manually by commend to get more information:

1. stop the runtime
   sudo /etc/init.d/codesyscontrol stop

2. start the plc runtime manually
   cd /var/opt/codesys
   sudo /opt/codesys/bin/codesyscontrol.bin -d /etc/CODESYSControl.cfg

3. second CLI
   tail -f /tmp/codesyscontrol.log

Dear,

I don't think that the problem is the same to the previous topic.
So, is there a possibility to export these variables to a usb memory?

Thank you and happy new year

Luca