Dears,

Good day, we had a long power shutdown in the plant, after the power was restored we faced BAF fault on the power supply and program lost on the cpu, since there was no Efrom installed in the cpu. BAF on power supply is reset by FMR, the back up battery was replaced a year ago. What can be the reason of the BAF fault that got activated during control voltage restoration. Thank you for your answer and recommendation.