Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual de usuario descargar pdf (Pagina 62)

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FactoryTalk Historian DataLink User Guide

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:

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 163 164

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Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual de usuario Pagina 62