AVEVA™ PI System™ Feedback Portal

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Status No status
Product PI Interfaces
Categories PI Interface for OPC DA
Created by Guest
Created on Dec 11, 2024

RELATED IDEAS

PI Interface for OPC DA bitmask plugin with float data type

PI Interface for OPC DA has a plugin called "Bitmask" to extract specific bits from regular OPC values that are of type Int (i.e VT_I2 / VT_I4 / VT_UI2) but other data types such as floats are not supported. It would be good to have Float data type supported for use in the case where the tag is defined as a float on the device/OPC server but the data is an integer

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  • hooper
    Reply
    |     Dec 11, 2024

    Several major suppliers of natural gas correctors/flow computers return errors in a bit encoded floating point value type, but the value is always an integer. It's a shame we can't use this OPC plug-in. Doing this in an Analysis unnecessarily complicates things especially since the mask value changes based upon how the instrument is deployed. Structing the differences in the PI tag, for me, makes more sense.

    If the dll would simply attempt to cast the incoming value to an integer and fail only if the casting fails, it would be a big favor for us in the gas and oil arena and I bet others as well.