Using event risen to log data into citadel

[Maryam]

Hi all,

I have an HMI application in LV & DS 8 reads My OPC items, and log data, alarms and events into citadel. Knowing Citadel is event-driven, I want to use this event to distinguish a change in database and update my Historical Alarm & Even List in the HMI front panel instead of ever polling the database.

I really appreciate any help.

[Stuart_R]

Can you post more information on what you are doing? I haven't done much with Citadel but I thought that it is aimed at logging data as it changes, i.e. all of the data logged in there will be different else it wouldn't have been logged in the first place?!

There are block diagram functions that allow you to read the traces back and this is all you need. Check out the examples that come with the DSC module.

Let me know if I can help you further.