Proficy Historian Client Access API
Proficy.Historian.ClientAccess.API Namespace / Tag Class
Properties Methods


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    Tag Class Members
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    The following tables list the members exposed by Tag.

    Public Constructors
     NameDescription
    Public ConstructorOverloaded.   
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    Public Properties
     NameDescription
    Public Property A security group name controlling tag configuration changes.  
    Public Property The absolute archive compression deadband value in effect with ArchiveAbsoluteDeadbanding=true.  
    Public Property Indicates whether archive-compression deadband is expressed as an absolute value (true) or percent of engineering units (false).  
    Public Property Whether to perform archive-compression on the tag's data stream. With archive compression enabled, data samples within the archive-compression deadband are not recorded in archives. Archive-compression is typically used to reduce data storage requirements in a Historian server.  
    Public Property With ArchiveCompression=true, the amount of time in milliseconds after which a data sample will be recorded in an archive regardless of archive compression.  
    Public Property The archive-compression deadband expressed as a percent of the engineering units range.  
    Public Property Specifies the calctype of the tag, it can be analytic or a raw tag.  
    Public Property The calculation formula for tags bound to a Calculation collector. Internally this is mapped to the SourceAddress property.  
    Public Property For a calculation tag, the list of tag names affecting this tag's value.  
    Public Property Whether data collection for a tag is currently suspended.  
    Public Property A millisecond interval determining tag data collection. For DataCollectionType.Polled, schedules periodic samples of data from a data source. For DataCollectionType.Unsolicited, establishes the minimum time allowed in-between reports of values from a data source.  
    Public Property For DataCollectionType.Polled data collection, the number of milliseconds from midnight to delay collection of the first data sample. Subsequent samples are then collected at CollectionInterval intervals from the offset.  
    Public Property Determines how data is acquired from a data source. With DataCollectionType.Unsolicited collection, new values are reported by the source on value change. Whereas with DataCollectionTypes.Polled collection, new values are periodically sampled from the source.  
    Public Property The absolute collector compression deadband value in effect with CollectorAbsoluteDeadbanding=true.  
    Public Property Indicates whether collector-compression deadband is expressed as an absolute value (true) or percent of engineering units (false).  
    Public Property Whether to perform collector compression on a tag's data stream. With collector compression enabled, data samples within the collector-compression deadband are not forwarded by the collector. Collector compression is typically used to limit redundant network traffic between Historian collectors and server.  
    Public Property With CollectorCompression=true, the amount of time in milliseconds after which a data sample will be forwared by a collector regardless of collector compression.  
    Public Property The collector-compression deadband expressed as a percent of the engineering units range.  
    Public Property A collector name of the collector responsible for furnishing a tag's data values.  
    Public Property The type of collector responsible for supplying tag data.  
    Public Property An optional tag comment.  
    Public Property A constant value to compare against the trigger tag's value with condition-based collection enabled.  
    Public Property A comparison operator for evaluating the trigger tag's value with condition-based collection enabled.  
    Public Property Whether condition-based collection is active. Condition-based collection makes data collection for a tag contingent on the current value of a separate trigger tag.  
    Public Property Whether to insert end-of-collection, bad quality samples to indicate a tag stopped collecting due due to condition-based collection.  
    Public Property A trigger tag to monitor with condition-based collection enabled. A trigger tag's value is evaluated to determine whether dependent tags should be collected.  
    Public Property  
    Public Property Name of the DataStore this tag belongs to  
    Public PropertyA data type determining the types of values stored by this tag. Valid data types are defined in Tag.NativeDataType.  
    Public Property An optional tag description.  
    Public Property An optional description of a tag's engineering units.  
    Public Property Name of the Enumerated Set used by this tag  
    Public PropertyA string length for Tag.NativeDataType.FixedString data type.  
    Public Property The first generic configuration field - purpose is determined by parent collector.  
    Public Property The second generic configuration field - purpose is determined by parent collector.  
    Public Property The third generic configuration field - purpose is determined by parent collector.  
    Public Property The fourth generic configuration field - purpose is determined by parent collector.  
    Public Property The fifth generic configuration field - purpose is determined by parent collector.  
    Public Property The high engineering unit range of tag data. Along with LoEngineeringUnits, used to determine deadband.  
    Public Property The upper range of incoming raw tag values.  
    Public Property A globally unique tag identifier.  
    Public Property Whether input scaling is applied to a tag's incoming data samples. With InputScaling=true, raw values in the range of LoScale to HiScale are converted to values in the range of LogEngineeringUnits to HiEngineeringUnits. Any input values outside the LoScale to HiScale range are logged with bad quality and ScaledOutOfRange sub-quality.  
    Public Property  
    Public Property A time when a tag's configuration was last modified.  
    Public Property A name of a user who last modified this tag's configuration.  
    Public Property Whether to evenly distribute data collection over available sample times for DataCollectionType.Polled collection.  
    Public Property The low engineering unit range of tag data. Along with HiEngineeringUnits, used to determine deadband.  
    Public Property The lower range of incoming raw tag values.  
    Public Property A user configurable tag name. Tag names are unique within a single Historian server.  
    Public Property The number of elements in the array if the tag is of type array.  
    Public Property A security group name controlling reading of tag data.  
    Public Property A data source-specific identifier determining the location of tag data in a data source.  
    Public Property Controls the application of spike detection logic during data collection. For tags configured for collector compression, enabling SpikeLogic causes the data sample immediately before a large deviation from the deadband to be recorded. This more faithfully represents a sudden signal spike as opposed to a gradual rise over time.  
    Public Property Whether to use a parent collector's spike logic setting (false) or a tag's own setting (true).  
    Public Property Indicates whether a tag's recorded data signal is smoothly changing (false) or composed of discrete "steps" (true). This property only affects interpolated data retrieval not data collection or storage.  
    Public Property The timestamp resolution for data sample storage.  
    Public Property Determines the source of data samples times during data collection. TimeStampDeterminedByType.Source applies time stamps directly from data source. While TimeStampDeterminedByType.Collector applies time stamps by the collector based on the host PC clock.  
    Public Property The name of the user defined type that this tag is asociated to. This applies only when the type of the tag is a MultiField Type.  
    Public Property The timezone bias in minutes for tag data samples as an offset from UTC.  
    Public Property A security group name controlling writing of tag data.  
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    Public Methods
     NameDescription
    Public Method Assign all properties from a source tag.  
    Public Method  
    Public Method Converts the value of this instance to a System.String.  
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    See Also