We often brag about PROFINET’s diagnostic capabilities and we brag about PROFINET’s role in the Industrial Internet of Things (IIoT) 
and Industrie 4.0. PROFINET excels at device to controller communications. But not all communications needs to go to the controller – there is some data it just doesn’t need. There are many articles in the current issue of IEEE Industry Applications Magazine highlighting such data. One is Monitoring Journal-Bearing Faults: Making Use of Motor Current Signature Analysis for Induction Motors.
You need a subscription or to make a payment to read this magazine… unless you are a member of IEEE and the Industrial Applications Society. If you are not a member and you are involved with industrial automation, you should be a member of both. I’ve been a member since my student days, so for a long time. (I’m now a Life Senior Member.) Definitely recommended!
Check into joining at the IEEE website. Your company may reimburse you for professional memberships.
–Carl Henning