C51 CRC check failure on secondary bus
If you unable to resolve the issue, log in to http://myUR.universal-robots.com and create a new case.
C51A0 Processor B
C51A1 Primary screen processor
CRC check failure on safety processor 1 in Teach Pendant
C51A2 Secondary screen processor
CRC check failure on safety processor 2 in Teach Pendant
C51A3 Primary E67
C51A4 Secondary E67