Emerson Exchange 365

Alarms and Events stoped collecting data for paticular Area assigned

Hi all,

Im a newbie to DeltaV. Im now a part of the commissioning team in one of our site's. I'm facing some serious problems with Events chronicle. I have assigned the event chronicle licence to my application station and I have enabled the station as SOE collector. It was working fine then and today suddenly I noticed events are not getting displayed in my PHV. I have checked my default server settings and found ok and also in configure events I am pointing to active data set. Out of 4 areas assigned to the Alarms and events, events are getting recorded for tags in one particular area and also system related events in area a is also getting recorded.

For tags in some particular area alarms are not getting stored. In PHV no events are displayed even though alarm is active for most of the tags as we are in commissioning phase. 

I have downloaded on of the module in that particular area were events are not getting stored then just after the download events came on PHV, but what happened to my old data and why events for all tags in those area's stopped recording.

Whats wrong here?

Neeraj S

• 19 Mar 2020 3:39 PM
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8 Replies

• IntuitiveNeil

  

  • 19 Mar 2020 3:59 PM

  Are the alarm areas assigned to the event and alarm section of the event chronicle node? It sounds as though some areas are assigned and the ones you are interested in aren’t.
  
  If this is the case, assign those alarm areas to the event chronicle node and then download the setup data of that node.
  
  Hope that helps.

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• Youssef.El-Bahtimy

  

  • 19 Mar 2020 4:10 PM

  You mention it was working fine before, so I'm going to assume all areas are assigned to the chronicle. Double check to make sure if you have multiple alarm and event Chronicles enabled (basically every type of computer node could be a chronicle) that your instance of PHV isn't connecting to the wrong one and/or all are consistent in their assignments.
  Download changed setup data on each chronicle to reassert configuration.
  Finally, it may be possible, but unlikely, that your chronicle cannot see controllers from the areas you are missing due to network issues. This would mean area x is on only on controller x and networking between chronicle and controller x is bad.

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• Neeraj S

  

  • 19 Mar 2020 4:47 PM

  In reply to Youssef.El-Bahtimy:

  Hi thanks for the reply
  
  Only my Application station is enabled for Events. I have tried deleting the area assigned and re assigning it then gave setup data download. still there was no result. As I mentioned before I have downloaded one AI module of that area, after the download, 'Download' event and alarm also came but my previous events are not there. But my continious history is still getting collected which is assigned to the same station so will it be a netwok problem?

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• Neeraj S

  

  • 19 Mar 2020 4:50 PM

  In reply to IntuitiveNeil:

  Area's are assigned and it was collecting data yesterday also. Suddenly today I noticed that I couldn't find any alarms and events for tags(of some particular area) in PHV

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• Andre Dicaire

  

  • 19 Mar 2020 6:07 PM

  In reply to Neeraj S:

  This sounds like your Active data set filled and was replaced by a new data set. All your old events are in the old dataset. What are your settings in the Alarm and Event Administration. Make sure you are auto exporting the data set and you are keeping them available. You may have to convert to an extended dataset and register it to see old events.
  
  But if this is the issue, you should still be seeing new events. However, if an alarm is active and a new Active dataset is created, there is no event to record until the alarm changes state. So it is normal there is no event record in the new dataset as the alarm time stamp predates this dataset time stamp. For an alarm change (suppress, unsuppress) and confirm the Ejournal records this.

  Andre Dicaire

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• Youssef.El-Bahtimy

  

  • 19 Mar 2020 8:24 PM

  In reply to Neeraj S:

  You said when you downloaded a module assigned to missing area x, you got the download and alarm event for that module. Are all other modules in the missing areas now reporting to the chronicle? You can test this by simply enabling/disabling an alarm and seeing that your activity for the module is logged.
  If you are missing event from areas from a window of time, trace back in both the event chronicle and your continuous history to develop the window representing your outage. (be careful when using continuous history to do this as a line will be drawn in PHV between to data points on opposite sides of an outage making you believe nothing transpired in between.. use the 'mark data points' option in PHV chart to judge when real data was recorded with a signal that changes beyond the compression tolerance frequently). Evaluate what occurred around the time of the outage and restoration of event recording.
  During commissioning, errors are probably flooding in at a tremendous rate, and you may be rolling over chronicles faster than you can create them, if you have that set up.

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• Neeraj S

  

  • 20 Mar 2020 7:18 PM

  In reply to Youssef.El-Bahtimy:

  Hi all,

  Yes I can see the events getting logged when I reactivate the alarm (ie I normalized the value in simulation mode for a while). but I'm not able to find my previous events I tried changing the active data set also. Yesterday some abnormal situation happened which I'm not able trace in events.I filtered out that particular area along with the time period but events were empty. I'm sharing a PHV image of the tag which I discussed before whose event stared to get collected after download.

   

  Please refer to this image.

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• Youssef.El-Bahtimy

  

  • 21 Mar 2020 3:48 AM

  In reply to Neeraj S:

  Sorry, the image is a bit small to be useful, plus it only show events in the context of one tag.
  If you can open a new blank event chart in PHV and set it for no filtering other than the time just before and just after your outage, I think you may see something had occurred system-wise
  I would also take a look in the windows application and system logs surrounding this time frame for the event chronicle machine and see if any errors or warnings are recorded from any deltav source application.
  It sounds like you may need to engage the GSC for any further troubleshooting beyond this.

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