44 Rockwell Automation Publication 1756-PM004D-EN-P - September 2012
Chapter 2 Organizing Tags
Describing a User-defined
Data Type
The Logix Designer application lets you automatically build descriptions out of
the descriptions in your user-defined data types. This greatly reduces the amount
of time you have to spend documenting your project.
As you organize your user-defined data types, keep in mind the following features
of the Logix Designer application.
The Logix Designer application uses different colors for descriptions.
Version 13.0 or later of the application.
Pass through of descriptions – When possible, the Logix Designer application looks
for an available description for a tag, element, or member.
·Descriptions in user-defined data types ripple through to the tags that use that
data type.
·Description of an array tag ripples through to the elements and members of the
array.
Paste pass-through description – Use the data type
and array description as a basis for more specific
descriptions.
In this example, Tank became West Tank.
Append description to base tag – the Logix Designer
application automatically builds a description for each
member of a tag that uses a user-defined data type. It
starts with the description of the tag and then adds the
description of the member from the data type.
Table 6 - Color Descriptions
If Color Description Is This Is
Gray Pass-through description
Black Manually entered description
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