about multi-level alarms

[gaillarddamien]

We need to raise different levels of alarms, based on thresholds.

At the moment, alarms for analog metrics can be raised when value reaches hiLimit (or loLimit respectively).
When this happens, alarmed is raised, and alarmRange is set to 1 (resp -1). And it works great.

We'd like to get more severe alarms when higher thresholds are reached.

I can see that other xxLimit attributes are reserved for later use, and I'd like to understand what they are for.

• Are hihiLimit and hihihiLimit (resp loloLimit and lololoLimit) intended for this use?
• Is hihiLimit supposed to be a higher threshold than hiLimit?
• Would alarmRange be set to 2, when hihiLimit is reached? (or how can I tell which level has been reached?)

Or to put it plainly, how can we set more thresholds to get different levels of alarms?
Can it / Should it be achieved by other means?

Many thanks for your insight on this.

[riclolsen]

Hi Damien,

• Are hihiLimit and hihihiLimit (resp loloLimit and lololoLimit) intended for this use?
  Yes, 3 levels of limits are planned, only the first level is currently implemented
• Is hihiLimit supposed to be a higher threshold than hiLimit?
  Yes, hihihiLimit >= hihiLimit >= hiLimit >= loLimit >= loloLimit >= lololoLimit
• Would alarmRange be set to 2, when hihiLimit is reached? (or how can I tell which level has been reached?)
  Yes, that is the idea: 1 for hiLimit, 2 for hihiLimit, and 3 for hihihiLimit. Negative for low limits, 0 for no violation.

This is the way it is supposed to be implemented. You can however conceive another way, create other custom properties and treat them directly by changing the current code or adding a new monitor process to set properties as you wish.

[gaillarddamien]

Hi Ricardo,
Many thanks for this.
I think I will add support for the two other levels very shortly.