Rockwell Automation FactoryTalk Historian SE 3.0 Live Data Interface User Guide - Manual (Page 26)

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FactoryTalk Historian Live Data Interface User Guide
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Length
The Tag field allows a maximum of 1023 characters.
Point Source
The Point Source is a unique single or multiple character string that is used
to identify the PI point as a point that belongs to a particular interface. The
Point Source for FactoryTalk Historian Live Data Interface is FTLD. For
additional information, see the /ps command-line parameter description in
Command-line Parameters (page 37).
Point Type
Typically, device point types do not need to correspond to Historian point
types. For example, integer values from a device can be sent to floating-
point or digital Historian tags. Similarly, a floating-point value from the
device can be sent to integer or digital Historian tags, although the values
will be truncated.
PI 3 Server Nodes
The following point types are supported on PI 3 Servers:
 float16
 float32
 float 64
 int16
 int32
 digital
 string