Property Tags
Property Tags
Property tags are used to provide read-only access to tag properties for client applications. To access a tag property, append the property name to the fully qualified tag address that has been defined in the server's tag database. For more information, refer to Tag Properties — General.
If the fully qualified tag address is "Channel1.Device1.Tag1," its description can be accessed by appending the description property as "Channel1.Device1.Tag1._Description".
Supported Property Tag Names
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Tag Name
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Description
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_Name
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The _Name property tag indicates the current name for the tag it is referencing.
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_Address
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The _Address property tag indicates the current address for the tag it is referencing.
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_Description
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The _Description property tag indicates the current description for the tag it is referencing.
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_RawDataType
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The _RawDataType property tag indicates the raw data type for the tag it is referencing.
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_ScalingType
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The _ScalingType property tag indicates the scaling type (None, Linear or Square Root) for the tag it is referencing.
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_ScalingRawLow
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The _ScalingRawLow property tag indicates the raw low range for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingRawHigh
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The _ScalingRawHigh property tag indicates the raw high range for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingScaledDataType
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The _ScalingScaledDataType property tag indicates the scaled to data type for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingScaledLow
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The _ScalingScaledLow property tag indicates the scaled low range for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingScaledHigh
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The _ScalingScaledHigh property tag indicates the scaled high range for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingClampLow
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The _ScalingClampLow property tag indicates whether the scaled low value should be clamped for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingClampHigh
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The _ScalingClampHigh property tag indicates whether the scaled high value should be clamped for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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_ScalingUnits
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The _ScalingUnits property tag indicates the scaling units for the tag it is referencing. If scaling is set to none this value contains the default value if scaling was applied.
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See Also: