Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual do Utilizador descarregar pdf (Página 64)

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FactoryTalk Historian DataLink User Guide

Note that attribute strings must match attribute values in FactoryTalk

Historian, and wildcards can be used. The function operates the same as a

tag search (page 51).

Tag Attributes

Retrieves an attribute associated with a specified FactoryTalk Historian tag

name.

Required Fields

Tagname

Attribute

Specify the tag attribute to be retrieved from FactoryTalk Historian.

Special Notes

Reference a range of tag names to display attributes for each.

The list of tag attributes available depends on the point class

associated with the tag.

Example:

To retrieve attributes of a FactoryTalk Historian point based on the tag

name, the following arguments are set for the Tag Attributes function:

Tagname = (reference to a cell array containing tag names)

Attributes = pointid (column 2), pointsource (column 3),

pointtype (column 4), descriptor (column 5)

The resulting function arrays appear as:

where the tag names are referenced in the column to the left, and a separate

Tag Attributes function is used for each attribute column.

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 163 164

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Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual do Utilizador Página 64