Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manuel d'utilisateur télécharger pdf (Page 152)

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FactoryTalk Historian DataLink User Guide

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Module Database Functions

PIAliasToTag()

Retrieves a tag name based on a FactoryTalk Historian point alias, using

the following syntax:

PIAliasToTag(alias, modulepath, querydate, outcode, PIServer)

Arguments

Argument

Explanation

alias (string)

The module database alias corresponding to the desired FactoryTalk

Historian point.

modulepath (string)

The full module path to the alias.

querydate (integer)

A date limit such that only aliases created at or after the date are

returned.

Outcode (integer)

An ouput code, either 0, 1, or 2.

PIServer (string)

The target FactoryTalk Historian server.

Returns

Outcode

Column 1

Column 2

Tagname

Server of tag

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 corresponding to the Temperature alias

of module Reactor1 which is a submodule of Unit1. Unit1 is at the root of

the module database for a FactoryTalk Historian server named thevax.

The module database is queried at current time.

=PIAliasToTag("Temperature","\Unit1\Reactor1","*",0,"thevax")

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 163 164

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Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manuel d'utilisateur Page 152