PI Developer Technologies

Welcome to the PI Developer Technologies feedback page!  

This forum covers the PI AF SDK, PI Web API, PI OPC DA and HDA Servers, and the PI SQL family. We created this forum to hear your ideas, feature suggestions and feedback. Please suggest your most important features and design change ideas on this site, and vote for your favorite ideas.

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  1. Enable PI Web API to retrieve previous AF Tables versions

    Internal AF table has been updated using AF versioning system, however retrieving it whole with PI Web API only works for current version: GetData method from Table controller (GET tables/{webId}/data) does not accept a time parameter.
    Workarounds involve creating Table Lookup Data Reference attributes or joining all table versions adding columns for time range to be later filtered out.

    1 vote
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  2. Allow Searching of PI Points by PointID or Crawling of the PointID attribute

    Allow one to search points by PointID with PI Web API or add the PointID as a attribute that you can index with the search crawler

    1 vote
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  3. allow search where name contains space to return determinant results

    querying for names which contains spaces is non-determinant. AFSDK has methods to search on name, but webapi OR's the search. For results sets which should contain one or few rows, this can result in thousands of wasted rows.

    PI Query syntax EBNF specifies quotedescapedchar, which includes Char, so space should be honored.

    1 vote
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  4. Missing Open API (Swagger) specification for the Search controller

    The swagger specs for the search controller are not available. This will be useful in the client libs for searching

    1 vote
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  5. 1 vote
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    1 comment  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  6. Configurable message sizes for PI Channels

    See https://pisquare.osisoft.com/message/112944-is-there-a-way-to-limit-the-size-of-pi-channel-messages for the originating question.

    Clients connecting via PI Channels have limits on the size of messages they can receive, for security reasons.  It is possible for PI Channel message sizes to exceed these limits.  There should be a way to configure the max message size for PI Channels.

    1 vote
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  7. Custom forms with PI Web API using Infopath

    How to use infopath with web API the same way it was documented how to use infopath with web services.

    1 vote
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  8. AF Dependency Removal

    Can the PI Web API be configured to store its configuration information in a flat file or some other (non AF) mechanism?

    1 vote
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  9. Return Event Frame Attribute Values with GetEventFrames Method

    Currently the GetEventFrames method returns only the properties of the event frame (start time, end time, extended properties, severity, ect.). In order to get a table including the event frame attributes, you need to get the event frame list first and then go through each event frame to get the related attribute values.
    It would be helpful if the GetEventFrames function returned a snapshot of the event frame's attribute values to improve the speed of custom applications.

    0 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  10. Allow inputs to be defined for calls to stream values

    The stream endpoints should allow passing input attributes/values if the attribute's Data Reference supports it (refer to the AFDataReference.GetValues method in the AF SDK).

    For example this could look something like:

    .../stream/{WebId}/recorded?input.myInput1=myValue1&input.myInput2=myValue2

    One strong use-case for this would be an attribute configured as a Table Lookup Data Reference that returns a time series but allows a parameter to be defined.

    0 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  11. Align time series when requesting PlotValues with streamset

    When requesting time series data for multiple attributes using a streamset request and the PlotValues endpoint, it would be helpful if the response had the timestamps all lined up. This makes it easier to render the data, particularly if the data is being visualized in a stacked area series.

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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
    TELL US MORE  ·  Ray Verhoeff responded

    This is something we would like to do but the nature of PlotValues makes this difficult to do if not impossible. The PlotValues endpoint returns a time series with the most visually significant values for each pixel on a display. Even though the data values are actual recorded values, the values from different data streams have nothing to do with each other. The timestamps for different streams probably won’t line up.

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