TimCarmichael

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  1. 80 votes
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    13 comments  ·  PI Server » Analytics & Calculations  ·  Flag idea as inappropriate…  ·  Admin →
    TimCarmichael commented  · 

    In response to Rick Davin, "Hi Tim Carmichael   Data References alwa..."
    Thank you! Well explained and I agree with your reasoning.

    TimCarmichael commented  · 

    In response to John Messinger, "We would like to be able to add custom a..."
    Since I haven't had an opportunity to use MATLAB functions, how does the requested implementation differ from custom data references? And, please excuse my ignorance of the process... I am truly asking to understand.

  2. 72 votes
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    1 comment  ·  PI Vision » Symbols  ·  Flag idea as inappropriate…  ·  Admin →
    TimCarmichael supported this idea  · 
  3. 6 votes
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    8 comments  ·  PI Server » Asset Framework (AF)  ·  Flag idea as inappropriate…  ·  Admin →
    TimCarmichael commented  · 

    When pulling events from an AF server using Datalink, an option to use the server time zone would be helpful. Regards of the PI Data Archive times associated with various points, the event has a defined start and end, or at least the potential for such.
    Currently, when pulling events with Datalink and using 'PI Data Archive' time, the setting seems to be ignored and defaults back to 'Client time'

    TimCarmichael supported this idea  · 
  4. 20 votes
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    1 comment  ·  PI Server » System Management  ·  Flag idea as inappropriate…  ·  Admin →
    TimCarmichael supported this idea  · 
  5. 18 votes
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    1 comment  ·  PI Server » Analytics & Calculations  ·  Flag idea as inappropriate…  ·  Admin →
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  6. 7 votes
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    PLANNED  ·  Ray Verhoeff responded

    We have a new SQL query processing engine under construction. We call it the Real-Time Query Processing Engine, or RTQP Engine. We are targeting improved performance and scalability but we are also improving some of the table designs to make common queries a bit easier. We have talked to many customers about their use cases. It turns out that direct access to PI Data Archive tags is still very important. We also found several hybrid use cases such a summarizing values from a PI tag over the period of an Event Frame, and Kenneth Barber’s excellent example of aligning AF Attributes with PI Point attributes. So, we will be adding direct access to PI tags and data but not in the first release.

    TimCarmichael commented  · 

    In response to Vincent Kaufmann, "What sorts of things are you looking to ..."
    In addition, from the 'PI OLEDB Provider' overview page:
     
    OSIsoft will continue to maintain PI OLEDB Provider but does not plan any major enhancements. For new projects, we recommended using PI OLEDB Enterprise, which provides access to PI System data through the PI Asset Framework (PI AF).
     
    If PI OLEDB Enterprise is being suggested as the path forward, it needs to be able to do everything PI OLEDB Provider can do.

    TimCarmichael commented  · 

    In response to Vincent Kaufmann, "What sorts of things are you looking to ..."
    PI OLEDB Provider can only connect to PI Data Archives, not an AF server; PI OLEDB Enterprise can only connect to an AF server, not a PI Data Archive.
    For the number of PI Data Archives we have, high double digits, some of the data has been added to AF, but, by and large, not all of it.
    When an application is written, being able to use a single access method rather than having to code for two methods reduces coding time and the installation base.
     
    Assuming the access path is stored in a configuration area (INI file, registry, .config file), changing the file (PI Data Archive name or AF server name) completes the access change.
    The queries will change from tags to attributes, but that is minor compared to changing access methods.

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  7. 1 vote
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