Rockwell Automation 1756-HIST2G FactoryTalk Historian ME 2.2 - Manual (Page 92)

F ACTORY T ALK H ISTORIAN ME M ODULE U SER ’ S G UIDE
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Type - specifies the data type of the point values. Changing a point’s data type
causes the Archive subsystem to close the current archive record and start a new
one with the new type information in the header. For points collected
automatically, use the point type that most closely matches the point type in the
source system.
Selections include:
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Int16 - used for points whose values are 16-bit integers.
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Int32 - used for points whose values are 32-bit integers.
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Float16 - used for points whose values are 16-bit floating point values.
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Float32 - used for points whose values are 32-bit floating point values.
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Float64 - used for points whose values are 64-bit floating point values.
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String - used to store string data up to 1000 characters.
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Digital - used for points whose value can only be one of several discrete states,
such as ON/OFF. Users may define the digital set contents.
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Timestamp - used for points whose values are timestamps.
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Digital Set - This field only appears if the type selected is digital. Use this field to
select the type of digital set for the selected point.
Strings are not supported for high speed Data Collection.