Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Instrukcja Użytkownika Pobierz pdf (Strona 149)

9 ● FactoryTalk Historian DataLink Function Reference

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Returns

 If the output code (page 104) is 0, 1, or 2 only the calculated value is

returned.

 Outcode of 3 is not used.

 If the outcode is 4 or 5, the percent good is returned to the right of the

value cell.

 If the outcode is 6 or 7, the percent good is returned below the value

cell.

Example:

The following calculates the amount of time that the expression from cell

$A$1 is true from the FactoryTalk Historian server named thevax, starting

from midnight yesterday to midnight today:

=PITimeFilterVal($A$1,"y","t","seconds",1,"thevax")

The calculation result is expressed in seconds.

Tag Functions

PIPointIDToTag()

Retrieves a tag name corresponding to a FactoryTalk Historian point ID,

using the following syntax:

PIPointIDToTag(pointid, PIServer)

Arguments

Argument

Explanation

pointid (string)

A FactoryTalk Historian point ID, which is a unique internal ID not

reused upon deletion of a point.

PIServer (string)

The target FactoryTalk Historian server.

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Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Instrukcja Użytkownika Strona 149