Pass-Through Descriptions for @Description references

FactoryTalk Linx
 version 5.90.00 added the ability to read Logix extended tag properties and deliver them to
FactoryTalk View
 applications. This capability included the ability to access the descriptions assigned to specific tag elements. With
FactoryTalk Linx
 version 6.10.00, this capability is enhanced to improve the ability to provide a description using information indirectly associated with a tag.
FactoryTalk Linx
 version 6.20.00 extended this ability to provide pass-through descriptions for alias tags.
Studio 5000 Logix Designer
 provides a capability known as "Pass-Through Descriptions" that will automatically pull a description from a referenced tag, array element, or structure member in order to provide description in formation without having to specifically document each and every tag element in an application. This capability greatly enhances system development productivity by reusing information that was already entered. Starting from version 6.10.00,
FactoryTalk Linx
 provides pass-through description from some areas in
Studio 5000 Logix Designer
 to
FactoryTalk View SE
 applications.
Description.
 The descriptions, if any, for each of the tags. If you did not provide a description for a particular item, the description of the next highest item in the tag hierarchy appears in this field. For example:
Reference Type
How the description will pass-through when the tag description is not provided.
Bit within a scalar SINT, INT, DINT, LINT tag (for example, Tag.1.@Desription)
Description from the scalar tag’s definition (for example, Tag.@Description)
Element of a scalar array (for example, Tag[1].@Description)
Description from the array tag’s definition (for example, Tag.@Description)
Bit within an element of a scalar array (for example, Tag[1].1.@Description)
Description of the array element (for example, Tag[1].@Description). Or if it’s empty, the description from the array tag’s definition (for example, Tag.@Description)
Member of a UDT Tag (for example, Tag.Member.@Description)
One of the following:
  • Description from the tag’s definition (for example, Tag.@Description)
  • Description from the UDT member associated with the tag’s data type (for example, UDT.Member.@Description)
  • Combination of the tag and UDT member (for example, Tag.@Description + UDT.Member.@Description)
Bit within an element of a member of a UDT tag (for example, Tag.Member.1.@Description)
One of the following:
  • Description from the tag’s definition (for example, Tag.@Description)
  • Description from the member of a UDT tag (for example, Tag.Member.@Description)
  • Description from the UDT member associated with the tag’s data type (for example, UDT.Member.@Description)
  • Combination of the tag and UDT member (for example, Tag.@Description + UDT.Member.@Description)
Nested UDT member of a UDT tag (for example, Tag.level1.level2.@Description)
One of the following:
  • Description from the upper level of the UDT member of a UDT tag (for example, Tag.level1.@Description)
  • Description from the UDT member associated with the tag’s data type (for example, UDT.Member.@Description)
  • Combination of the tag and UDT member (for example, Tag.@Description + UDT.Member.@Description)
Member of an array defined using a UDT tag (for example, Tag[1].Member.@Description)
One of the following:
  • Description from the array tag’s definition (for example, Tag.@Description)
  • Description from the UDT member associated with the tag’s data type (for example, UDT.Member.@Description)
  • Combination of the tag and UDT member (for example, Tag.@Description + UDT.Member.@Description)
AOI Parameters (InOut is not supported)
One of the following:
  • Description from the tag’s definition (for example, Tag.@Description)
  • Description from the AOI member (for example, AOI.Member.@Description)
  • Combination of the tag and AOI member (for example, Tag.@Description + AOI.Member.@Description)
Program Parameters
Same with the controller tags, inherit the description from the tag’s definition (for example, Tag.@Description).
Alias tag reference (all types to scalars, array elements or UDT members. Only applicable for L8 controller tags.)
One of the following:
  • Description from the tag’s definition (for example, Tag.@Description)
  • Description from the Base tag’s definition (for example, Tag.@Description)
Source.
 The source. Such as the tag, tag member, or data type that provides the displayed description.
Locale.
 Indicates the locale of the displayed description. This property is only displayed for language switched projects.
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