Yes I also facing same problem,my system are working from last 9 year but from 1 month I am facing this problem (I/O access error ) .I changed analog input module as well as Cpu but facing same problem ,please suggest me what can I do now.

Cpu: 315 2n dp

AI :Sm331 (6ES7-331-7KF02-0AB0)

Thanks,

Regards.

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Split from I/O access error!.

Hi

What is the analog module measuring range module set too?