Specifications

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Logix Database Options

Descriptions of the parameters are as follows:

l Limit Tag/Group Names to 31 Characters?: When checked, this parameter limits the tag and group

names to 31 characters. Before OPC server version 4.70, tag and group name lengths were restricted to

31 characters; however, the current length restriction of 256 characters can fit Logix 40 character Logix

Tag names. The default setting is unchecked.

Note: If an older OPC server version was used to import tags via L5K/L5X import, inspect the Event Log or

scan the server project to see if any tags were cut due to the character limit. If so, it is recommended that

this option be enabled to preserve the server tag names. OPC client tag references are not affected. If not

chosen, new longer tag names are created for those that were clipped. OPC clients referencing the

clipped tag would have to be changed to reference the new tag.

If an older OPC server version was used to import tags via L5K/L5X import and no tags were clipped due

to the 31 character limit, do not select this option. Similarly, if tags were imported via L5K/L5X with OPC

server version 4.70 or above, do not select this option.

l Tag Hierarchy: This parameter specifies the tag hierarchy. Options include Condensed and Expanded.

The default setting is Expanded. Descriptions of the options are as follows:

l Condensed Mode: In this mode, the server tags created by automatic tag generation follow a

group/tag hierarchy consistent with the tag's address. Groups are created for every segment

preceding the period.

l Expanded Mode: In this mode, the server tags created by automatic tag generation follow a

group/tag hierarchy consistent with the tag hierarchy in RSLogix 5000. This is the default

setting. Groups are created for every segment preceding the period as in Condensed mode, but

groups are also created to represent logical groupings.

Note: For more information on the groups created, refer to Tag Hierarchy.

Note: To enable this functionality, check Allow Automatically Generated Subgroups in device

properties.

See Also: Controller-to-Server Name Conversions