Rockwell Automation FactoryTalk Historian SE DataLink 4.2 User Guide - Manual (Page 62)

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FactoryTalk Historian DataLink User Guide
54
Tag Functions
The following section describes FactoryTalk Historian DataLink tag
functions. These functions can be used to resolve FactoryTalk Historian
point IDs or other point attributes into a matching tag name. You can also
retrieve other point attribute values based on a tag name.
To access tag functions:
 Click in the desired output cell, and then choose PI > <function
name> to open a function dialog box (XP-2003), or click a function on
the FactoryTalk Historian ribbon to open a new function task pane
(2007).
Tag functions use common function components (page 17).
Point ID to Tag
Returns the tag name that corresponds to a specific FactoryTalk Historian
point ID.
Required Fields Point ID
Example:
To retrieve the name of a tag corresponding to a PI point ID, the following
arguments are set for the Point ID to Tag function:
Point ID = (reference to a cell containing a point
ID value)
The resulting function array appears as: