Alarm and event notification DSC

Question

I can't understand the functionality of these DSC VIs:
Acknowledge Alarms .vi
Set user Defined Alarms .vi
Request Alarm & Event Notifications .vi
I appreciate any guide.

Answer 1

Hi Maryam,
Acknowledge is where the sequence action that indicates recognition of a new alarm.
Where an alarm is an abnormal process condition. In the LabVIEW Datalogging and Supervisory Control (DSC) Module, an alarm occurs if a shared variable value goes out of its defined alarm limits or if a shared variable has bad status.
This is the URL of the DSC module Glossary:
http://zone.ni.com/reference/en-XX/help/370246D-01/lvdschelp/dsc_glossary/
If you want to know more about the general functionality of alarms and events and what to use specific VIs for.
The fisrst call as I said previously should be the context help, check the example library and the NI developer zone. Another reasource which you can check is the DCS module "VI, Function, & How-To Help".
Click on the "Help" then "VI, Function, & How-To Help", expand the following items in the tree structure "DSC Module"> "DSC Module VIs & Functions" > "Alarm & Events VIs".
For future reference it would be helpful in future if you gave more information in your posts eg what version of LabVIEW you are using - so can post back relevent versioned example code.
And what you are trying to do - why are you interested in the DSC alarm VIs, could make more specific replies given this information.
Sorry if my initial replies are basic but I had no way of knowing the level of information you were looking for and you did not say what you had already tried/ looked up.
Alarms can be used in many applications but as I said their basic functionality is to alert the user to an abnormal process condition eg sub/super limit values or bad status.
I hope the above helps but if you require more information please let me know what it is you specifically want to know.
Regards,
Emma Rogulska
NIUK & Ireland