controlnovice,
DeltaV has an AutoSense function, you can plug all the cards in and do Autosense it will tell you what's in each slot, mine came up all empty except for the AI. Moving the AI around it would find it again.
The modules were checked in another system and found to be OK. After unplugging and reconnecting all the rack cables the system worked again, must have been a faulty connection somwhere. Who knows why the AI always worked?
Thanks for your help.
Roy