Please also see the attached screenshots.

The PLC logik is in Simatic Manager and the HMI panel in is TIA v18

How do I modify my TIA project so that the alarm trigger will be M901.0 instead of DB61.DBX21.5 (and I will do similar for the other 94 alarms in the project).

Is it not possible to do this by using a new FC (110) and a memory bit?

Do I need to modify the existing FC (109) and put the new trigger bit in the new instance DB for this modified FC? I hope to avoid this.

Even if I modify the existing FC (109) and put the new trigger bit in the new instance DB I still need to use the new trigger bit in the TIA panel - but how?

Hello Murof,

Thank you for answering.

Please also see the attached screenshots.

The proxy option seems nice but doesn't it take up a lot of memory or processing power? It also seems like I can only select signals from the symbols list in the 300 PLC. For now I think I prefer to just let the (basic) panel ask for the tags it uses in the PLC.

I changed the Address for the Alarm Status signals to a 16 bit signal (MW). This means that Alarm 1 to 16 will be bit 0 to 15 on MW901 and Alarm 17 to 32 will be bit 0 to 32 on MW903 and so on ending with Alarm 95 on bit 14 on MW911. See pic 10 & 11.

Then I want to see this change reflected in the HMI alarms but even though I CAN pick the Tigger tag from the Alarmer list (where it has the new MW reference) it does not change the tag in the list (I just updated the number of the trigger bit) - see pic 12, 13 & 14.

Why is it not updating the tag and how can I make it do that?

Would it be better if I made a new DB in the PLC for these 95 bits - and why is this better that just collecting the 6 MW's?