Hello All,

Hope you're well!

I've set up limit monitoring for analog MFM signals (Voltage, Current, Power) in WinCC V7.5 SP2 UPD 14.

Additionally, we've implemented filters in WinCC Alarm and Event Control PDL to exclude simulated messages from IEC 61850 signals when WinCC restarts or after communication failures with IEDs (see Image 1 attached).

However, after applying any of these 5 filters (highlighted in red in Image 2), the limit monitoring messages no longer appear in the Alarm and Events pages.

We've noticed that the data for limit monitoring is completely blank for those filtered conditions and seems unrelated to the applied filter condition (see Image 3).

Could anyone please assist? I'm seeking guidance on any potential mistakes or alternative solutions to filter out simulated messages which appears after communication failure restoration while ensuring the integration of limit monitoring signals in the alarm and events PDLs.

Thank you for your support!

Edit: Could someone please assist with my query? Your prompt help would be greatly appreciated.

Hello all,

Attached is a small video for better understanding of the concern.

Our concern is with blocking simulated messages that appear immediately after any IED communication is established or when WinCC is reactivated.

Edit: Could someone please assist with my query? Your prompt help would be greatly appreciated.