In today's world of ever-increasing reliance on machine automation, we rely heavily on fault identification through alarms. However, one area that can be overlooked is the diagnostic information of cards in racks and devices on the network.
Dear sir,
thanks a lot for the helpful information, I make all the steps using S7-1500 and Wincc V7.5 all things are ok but the system diagnostics control does not update automatically we should exist runtime and open again to update.
and also I need to know how to make faults by using PLC Sim on S7-1500.
Thanks
Hey Ali, welcome to the forum 
That’s a great question. Perhaps @jowett34 can help.
For your second point, “how to make faults by using PLC Sim on S7-1500” can you please elaborate? We might be able to write a tutorial in the future on this topic.
Hi Ali, can I ask whether you’re running a service pack and what updates you’re currently using with WinCC V7.5? I know from experience that V7.5 has a compatibility issue with diagnostics.