CIB line debugging

It has been a long-standing problem with a previous installation that several devices communicate incorrectly on the CIB lines.
We have already replaced the devices.
The error did not disappear, only other devices began to function incorrectly.
Can I get a description to understand the DT_CIB_DIAG values ​​in Mosaic?
I hope I can narrow down the error better this way. 
I'm attaching a picture so you can see exactly what I mean.
Best regards: Balázs Marozs