Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 254)

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FactoryTalk Historian ProcessBook User Guide
236
Point Type How It Is Used PB Support
Int16 FactoryTalk Historian ProcessBook supports
these as integers. Used for points whose
values are 15-bit unsigned integers (0 to
32767).
Supported
Int32 Negative integer values are supported. Used
for points whose values are 32-bit signed
integers (- 2147450880 to 2147483647).
FactoryTalk Historian reserves some values.
Supported for positive and
negative Integer values
Float16 Used for floating point values, scaled. The
accuracy is one part in 32767. Supported
Use the displaydigits attribute
to determine the precision to
display.
Float32 Used for single-precision floating- point
values, not scaled.
Supported
Use the displaydigits attribute
to determine the precision to
display.
Float64 Used for double-precision floating- point
values, not scaled.
Supported
String Each string event represents an ad- hoc state
in a series. Used to store string data of up to
976 characters.
On plots, each string event
represents an ad-hoc state in
a series; not supported on
logarithmic traces, multi-state
configurations, or bar
symbols.
Blob Binary large object - Used to store any type of
binary data up to 976 bytes.
Not supported
Use the displaydigits attribute
to determine the precision to
display.
Timestamp Plotted as seconds over a given range. Not
supported for logarithmic traces. Used to
store values of type Timestamp. Any
Time/Date in the Range 1-jan-1970 to 1-Jan-
2038
Plotted as seconds over a
given range. Not supported
for logarithmic traces, multi-
states, or bar symbols.