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. AF SDK and Web API on Linux OS'es

    With Microsoft supporting .NET Core on Linux operating systems such as RHEL, SLES Ubuntu, CentOS, and Debian.
    https://docs.microsoft.com/en-us/dotnet/core/about
    https://docs.microsoft.com/en-us/dotnet/core/linux-prerequisites?tabs=netcore2x

    They are even supporting SQL Server on Linux OS'es.

    I don't know the dependencies of the AF SDK nor the Web API, but if they can use .NET Core; it would be nice to have the AF SDK and Web API available for Linux based OS'es.

    3 votes
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    1 comment  ·  PI AF SDK  ·  Flag idea as inappropriate…  ·  Admin →
  2. Return Partial Results From Event Frame Search in PI Web API

    Currently when searching for event frames, a 400 error is returned if not all elements in the search exist.

    piwebapi/eventFrames/search?databaseWebId=WebId&Element:IN("\\server\AssetSwap\Site2\Asset1";"\\server\AssetSwap\Site2\Asset2"

    This is cumbersome especially in the case of asset swapping in PI Vision when parent elements could contain variable child elements. For any parent element that contains less than the max child elements, a 400 error will occur when searching for event frames for related parent elements.

    3 votes
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    1 comment  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  3. Support Performance Equation Syntax for time parameters in the PI Web API

    As a Web API developer, I would like to be able to use time PE functions in the Web API using the streams/streamsets controller to allow for complex time queries.

    3 votes
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    1 comment  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  4. Get Values by Count in the PI Web API

    As a PI Web API developer, I would like to retrieve values by specifying a count like you can do in PI SMT and other PI clients. This functionality is exposed by the RecordedValuesByCount in the AF SDK.

    3 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  5. PI OLEDB Enterprise access to AF Tables

    Allow PI OLEDB Enterprise access to AF Tables.  The current workaround is to have the table live on a SQL database and then link to them from AF.

    3 votes
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    0 comments  ·  PI OLEDB Enterprise  ·  Flag idea as inappropriate…  ·  Admin →
  6. Introduce a AF OPC DA/UA Server

    Title says it all!
    It would be awesome to have an AF OPC Server exposing real-time data from AF element hierarchy using any type of attributes data reference.

    3 votes
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    3 comments  ·  PI OPC DA & HDA Servers  ·  Flag idea as inappropriate…  ·  Admin →

    We have started work on an OPC UA server for the PI System which will expose asset and time series data in the PI System through the OPC UA specification. We consider this experimental work. We will certainly release it if we are sure we can meet your requirements of features, performance, and scalability. The OPC UA spec is large so I need to know what parts are the most important. Names of OPC UA client applications would be helpful.

    This is an identical request: https://feedback.osisoft.com/admin/v3/suggestions/18844639/activity

  7. PI TagMedian function need to be added in AF analysis.

    Please add PI TagMedian function in AF analysis like PI TagAvg and PI TagMean. Currently Median function is available but it cannot be applied for archive values of PI Tags during particular time range

    3 votes
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    0 comments  ·  General  ·  Flag idea as inappropriate…  ·  Admin →
  8. Mention in the AF SDK reference documentation that exception is not applied by the UpdateValues method

    The UpdateValues method does not implement by itself the exception mechanism. Exception is applied on the client side, for instance by UniInt interfaces.

    As a developer,  I would like this fact to be mentioned in the documentation to avoid confusion:
    https://techsupport.osisoft.com/Documentation/PI-AF-SDK/html/M_OSIsoft_AF_Data_AFData_UpdateValues_1.htm

    3 votes
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    1 comment  ·  PI AF SDK  ·  Flag idea as inappropriate…  ·  Admin →
  9. Whitelist/Blacklist KST Members

    As a user, I would like to restrict connections from the PI OPC Server to only some members of the KST by either implementing a whitelist or a blacklist.

    3 votes
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    PLANNED  ·  1 comment  ·  OPC DA & HDA Servers  ·  Flag idea as inappropriate…  ·  Admin →
  10. Add the “Create Timestamps” functionality back into the OPC DA Server product

    In the PI OPC DA/HDA Server 2010 product, there was a “Create Timestamps” functionality (found in the OPCServerConfig Tool). This option had the PI OPC Server create timestamps for OPC clients. I rely on this functionality heavily for an OPC client I use every day. Thus, currently I have to stay on PI OPC DA/HDA Server 2010 since this functionality was removed from the newer version. I would like to have this functionality back.

    3 votes
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    0 comments  ·  OPC DA & HDA Servers  ·  Flag idea as inappropriate…  ·  Admin →
    PLANNED  ·  Ray Verhoeff responded

    We understand this feature is important and we are planning to restore it. We will give you an update on the release schedule when this is finalized.

  11. Allow subscribing/unsubscribing to attributes on existing channel connection

    The channel/websocket feature of PI Web API would be more useful if it was possible to subscribe/unsubscribe to attributes on an existing channel connection. Currently you have to open the connection with all the WebIds you want in the resource URL. If you want to change which values you are receiving, you would have to close the connection and open a new one. Adding this new feature would also solve issues with maximum URL length limitations.

    3 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →

    This is an issue we definitely need to address for both the reasons you suggested. We should be able to add and remove attributes while a channel is open. We also need a mechanism for signing up for large numbers of WebIds when the list would be too long for a URL.

  12. Windows authentication of clients

    As a PI user, I want the OPC DA and HDA Servers to honor the Windows identity of any connected OPC client.

    3 votes
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    0 comments  ·  OPC DA & HDA Servers  ·  Flag idea as inappropriate…  ·  Admin →

    We understand the requirement. It makes sense. We have been looking into it but it turns out to be difficult to do. We used a third-party framework to build the PI OPC DA Server which separates interactions with the OPC client from interactions with the PI Data Archive. It solved a number of problems but unfortunately there is no easy way to have OPC client user credentials flow to the PI Data Archive. We are evaluating our options.

  13. Expose UOM Groups in PI Web API

    As a programmer I want the PI Web API to expose an endpoint for reading UOM Groups and UOM Group mappings. This would allow javascript based web applications to read the UOM Groups and mappings in order to use the mappings in subsequent data stream requests. Then the end users could see all data in familiar UOMs according to their selected UOM Group.

    UOM Groups was introduced in PI AF 2017 R2 and is supported in AF SDK 2.9.5+.

    The endpoint could e.g. be at
    https://host/piwebapi/assetservers/{assetServerId}/uomgroups/ and https://host/piwebapi/assetservers/{assetServerId}/uomgroups/{groupId}/mappings/

    A similar request exist under PI Vision product and maybe they can…

    2 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  14. Don't install SQL Commander Lite with OLEDB Drivers Automatically

    We did install the SQL Client software on our SQL server, but there was no option to exclude the SQL Commander Lite. So, we had to turn around and uninstall SQL Commander Lite. I'd just like to suggest for future install packages that there be an option to exclude SQL Commander Lite.

    2 votes
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    0 comments  ·  PI OLEDB Driver  ·  Flag idea as inappropriate…  ·  Admin →
  15. Reset Attribute to Template method in PI Web API

    Synced to PI Square at https://pisquare.osisoft.com/ideas/29447

    As a developer using PI Web API, I would like to have a Reset an attribute to template method using the Web API so I can program with greater flexibility.

    I am attempting to create a .NET Core App and this limitation prevents us from using PI Web API exclusively in automated AF Builds

    2 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  16. Schedule PI Web API Crawls

    The customer would like the ability to schedule crawls for a specific AF database (it's quite large), so that crawls don't interrupt users who need to access the elements in the PI Vision search during their working hours.

    2 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  17. Add support for AFFile type

    To support reading/writing files stored in AF. Read is more important though.
    Started from here: https://pisquare.osisoft.com/thread/37635-access-pdftextdoc-files-from-af-server

    I want to be able to use AF as a one-stop place to access my Asset Data. Therefore i want to be able to access Files stored in AF to provide this data alongside all other data through the PI Web API.

    2 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
  18. AF SDK Calls using the AFValues.GetValues should include an index of result events, this is to allow direct location of replacement events

    The PIPoint.ReplaceValues method requires a replacement of every event in the timerange, however it also may reorder or miss events with the same time stamp. The issue is that if the client wants to replace only a certain event, but must find that event - the replacement is for all the events at that timestamp and the method doesn't seem to allow for precise replacement of a value.
    The use case is programmatic correction of operator manual entry error, where multiple events have the same timestamp.

    2 votes
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    0 comments  ·  PI AF SDK  ·  Flag idea as inappropriate…  ·  Admin →
  19. Allow PI OLEDB Enterprise client to specify which member of a PI Data Archive Collective to connect to.

    Enable functionality for PI OLEDB Enterprise that will allow the client to specify which member of a PI Data Archive collective they wish to connect to. This functionality has already been enabled for PSE and would like something similar for PI OLEDB Ent.

    2 votes
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    0 comments  ·  PI OLEDB Enterprise  ·  Flag idea as inappropriate…  ·  Admin →
  20. Add point attributes such as "instrumenttag" to "fields" for search controller

    Currently, as shown in the link below,

    https://techsupport.osisoft.com/Documentation/PI-Web-API/help/controllers/search/actions/query.html

    The "instrumenttag" as well as other PI point attributes are not selectable in "fields".

    The selectable ones are shown below:

    afcategory; attributes; datatype; description; endtime; haschildren; itemtype; links; matchedfields; name; plottable; starttime; template; uniqueid; uom; webid

    2 votes
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    0 comments  ·  PI Web API  ·  Flag idea as inappropriate…  ·  Admin →
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