Good day!

I`m new to using Simatic STEP-7. I just want to know the typical/commonly used OB, SFC, SFB for System Alarms (i.e CPU fault, Module fault, overflow, communication error, etc.), or other Functions that is typically used in programming with STEP-7.

We`ll be using CPU 315-2PN/DP PLCs. I hope anybody can give me a list of those functions for diagnosing, or gathering system alarms/errors.

Thank you very much.

Thank you so much for the information. So, it means that all System Alarms can be monitored / diagnosed using the appropriate OB`s? Are there any SFC/SFB that is also used for System Alarms?

Aevat

So, it means that all System Alarms can be monitored / diagnosed using the appropriate OB`s? Are there any SFC/SFB that is also used for System Alarms?