C280 Real-time error

You may find the following links helpful in addressing this issue:

If you unable to resolve the issue, log in to http://myUR.universal-robots.com and create a new case.

C280A0 Critical error

A critical real-time error occurred

Try the following actions to see which resolves the issue: (A) Conduct a complete rebooting sequence, (B) Update software, (C) Check communication between joints, (D) Contact your local Universal Robots service provider for assistance