Rockwell Automation 1756-HIST2G FactoryTalk Historian ME 2.2 - Manual (Page 79)

5 • M ANAGING P OINTS
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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.
You can create a maximum of 2500 data points per FactoryTalk Historian ME. If you
exceed 2500 data points, the Create button will automatically become deactivated.
You can deselect points from the Select field to reduce the number of points. When
the point count is less than 2501, the Create button will automatically become
reactivated.
The Search Results table contains the following information:
„
Select - displays checkboxes that allow you to select or clear which tags to create.
„
Name - the name of the tag found in the controller. The name is a combination of
the ControlLogix project name added as the prefix to the controller tag name.
„
Type - displays the type of data that the controller tag stores.
„
Rate - displays the current scan rate for each tag. To change the scan rate, click
[Change Scan Rate].
„
Path - displays the path to each tag in the device. The path is a combination of the
ControlLogix project name and its slot location [also known as its Control and
Information Protocol (CIP) path].
Stop Data Collection before adding and creating points to ensure minimal impact on
Logix controller memory.
For information on manually creating individual points, see “Manually Creating and
Editing Points”.