Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Uživatelský manuál stáhnout pdf (Strana 151)

9 ● FactoryTalk Historian DataLink Function Reference

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143

An output code (page 104) of 2 transposes the output array that results

from an output code of 1.

Example:

The following returns the tag name of the tags which start with "sin"

from server named thevax.

=PIAttributeMaskToTag("sin*","*","*","*","*","*",0,"thevax")

PITagAtt()

Retrieves the value of a tag attribute based on a tag name, using the

following syntax:

PITagAtt(tagname, attribute, PIServer)

Arguments

Argument

Explanation

tagname (string)

The tag name or names matching the desired attributes.

attribute (string)

The desired FactoryTalk Historian point attribute.

PIServer (string)

The target FactoryTalk Historian server.

Returns

Tag attribute value

Example:

The following retrieves from the default FactoryTalk Historian server the

engineering units for the tag located in cell D1:

=PITagAtt(d1,"units",)

1 2 ... 146 147 148 149 150 151 152 153 154 155 156 ... 163 164

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Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Uživatelský manuál Strana 151