Sum alert in distributed system

[ewoenne]

Hi,

Our current project is a large distributed system consisting of
- several systems on different parts of the plant showing local panels and alarms
- a central system with high level scripts and panels also showing panels and alarms from the other systems

I have set up summary alerts on all the plant systems in order to count alarms & display the colour of the highest priority alert. My question is how to handle a summary alert on the central system that includes all the alarms from the distributed systems?

You can't included distributed DPs in a sum alert. I can calculate the total alarm count from the distributed systems easily enough but I'm not sure how to handle the alarm colour (the colour of the highest priority alert over all systems). Will I need to write my own script to calculate this? Has anyone handled sum alerts over distributed systems?

[leoknipp]

The alert color is part of the referenced alert class.
If you will calculate your own sum alert you have to change the referenced alert class everytime when one of the referenced alerts changes. The alert class can only be changed when the alert is inactive.
This task might be difficult and everytime a new alert will be generated when the alert class is changed (alert handling inactive - changing the alert class - alert handling active).

Maybe it is a better idea to use serveral boolean dp elements with different alert settings in the central system, e.g. 3 elements representing different alert priorities and alert colors.
Depending on the alert information read from the distributed systems one of the boolean elements is set to generate an alert.
It is not exactly the same like a summary alert but the user gets the information which alerts (priority) are pending on the distributed systems.

Best Regards
Leopold Knipp
Senior Support Specialist

[ewoenne]

Thanks Leopold. I've started writing a script which takes the priorities and states of the summary alerts in the distributed systems, sorts them and writes the information from the top alarm to another dp which will be used to set the colour of the alarm summary button.

Thanks for the reply,
Ellen