Rockwell Automation 1756-HIST2G Historian ME 2.1 - Manual (Page 78)

F ACTORY T ALK H ISTORIAN ME M ODULE U SER ’ S G UIDE
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When selecting a scan rate, it is important to be aware that points that have an
invalid scan rate configured will not be created. The valid scan rates are as
follows:

Advised and Polled - equal to or greater than 0.5 seconds.

High Speed - equal to or greater than 0.01 seconds and equal to or less than
0.5 seconds.
Any point that was not created is listed in the Review Results page with the
reason it was not created.
4. Click the checkbox next to the name of the controller that you wish to use for a
data search.
A list of all online controllers in the same chassis is displayed next to the Start
Search In checkbox by default. FactoryTalk Historian ME supports Data
Collection from a maximum of four controllers.
5. Click [Show Tags] to search for tags in the selected controllers.
6. An informational message will appear to indicate data is being retrieved from the
controller.
Creating Points
In Step 2: Create Points, the Add Points Wizard returns search results based on the
criteria set in Step 1: Discover Tags. To search the results, enter search criteria:

Name - the name of the tag in the controller. The default is “*”, which displays all
tags.

Slot - slot location of the controller in the chassis. Tags from the controller
selected in the Start Search In field in Step 1: Discover Tags will display by
default.

Type - displays the controller data types. The default is “*”, which displays all
data types.
See “Reviewing Results” for an image of the Review Results page.