Emerson Exchange 365

DeltaV Live - DeltaV Scheduler

With the introduction of DeltaV Live in V14, how are the DeltaV Scheduler functions handled within DeltaV Live. I am in the process of using the ALM_STATISTICS library module which uses the ALM_STATS_CALC schedule introduced in DeltaV V13. Before I embark on using this wholesale, I would like to understand how this is handled within DeltaV Live.

If there is not a direct out of the box function, I will possibly delay the use of the ALM_STATISTICS function until it is resolved in DeltaV Live. 

• DeltaV Live Scheduler

Andy M Smith

• 10 May 2018 9:02 AM
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5 Replies

• Andre Dicaire

  

  • 11 May 2018 11:25 PM

  That is a great question Andy. I'm hoping to get some more details on handling schedule functions. It will be a couple of weeks before I get a chance to investigate further. But this is certainly an area of interest as people think about migrating to the new Operator Interface. I'll add to this thread as soon as I can.

  Andre Dicaire

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• István Orbán

  

  • 17 May 2018 9:01 AM

  There is an upcoming webinar about DeltaV Live, in case you're interested: www.emerson.com/.../lifecycle-services-customer-webinar-deltav-live-flier-may-2018-en-4279054.pdf

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• amodbobade

  

  • 14 May 2021 5:28 PM

  In reply to Andre Dicaire:

  Dear Andre,
  
  I am trying to figure out if the ALM_STATISTICS library module schedule is now supported by DeltaV Live. No positive leads yet.
  Do you have any further info about the development on this topic please?
  
  Thanks,
  - Amod.

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• Andre Dicaire

  

  • 14 May 2021 7:32 PM

  In reply to amodbobade:

  DeltaV live does not support a schedule like Operate. To execute scheduled scripts, you would either enable a Timer on a Display or you could use a Variable with OnWrite script enabled, and trigger this script from a Control Module parameter.
  
  The ALM_Statistics module relies on the workstation script to write the Alarm information at 1 am and 1 pm . To solve this, I might do the following (Just a thought here)
  
  1: Add a DTE block to the ALM_Statistics module for this workstation generate a pulse at 1 am and 1 pm. Add some logic to latch the pulse and reset it with the Script that updates the values.
  
  2: Modify the Alarm Banner display and add a Variable animated to read the trigger created above. This is tricky as you likely use the same banner on all workstations. If all workstations have an ALM Statistics module, not a problem. But I'd assume that's not the case. Use the OnOpen script to set initialize based on Nodename. From this, you can set the variable animation accordingly. You might use a separate static Boolean variable that you set TRUE if the nodename has a statistics module and false otherwise. Then in your script, you can do a check to bypass everything is value is false. Lot's of ways to do this.
  
  3: Check that your variable script only runs once on each transition of the trigger parameter. you want to confirm your script will run once and stop.
  
  4: Check that your script structure and associated logic is executing the parameter writes as expected without error.
  
  5: Add the translated VBA script to the Typescript to read alarm data and write it to the Statistics Module on demand.
  
  6: Enable your twice daily trigger to get data into the module for averaging and reporting.
  
  Hope this helps. I've not tested this specifically, but the OnWrite script of a variable will work. Good luck.

  Andre Dicaire

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• Arock

  

  • 15 May 2021 6:36 AM

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