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Allen-Bradley ControlLogix Ethernet Driver Help

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Descriptions of the parameters are as follows:

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Create Tag Database from Device: This option retrieves tags directly from the controller over the same Ethernet connection that is used for data access. Although it is fast, comprehensive, and imports all tags (including I/O tags), this option requires access to the controller and does not import descriptions. Timer/Counter CTL bits are imported.

Note: Add-On Instruction In/Out parameters are not automatically generated, whether creating the tag database from the controller or from an import file.

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Tag Import File: This parameter specifies the exact location of the L5K/L5X import file from which tags will be imported. This file will be used when Automatic Tag Database Generation is instructed to create the tag database. All tags, including Global and Program, will be imported and expanded according to their respective data types.

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Display Descriptions: When checked, this option imports tag descriptions. Descriptions will be imported for non-structure, non-array tags only. If necessary, a description will be given to tags with long names stating the original tag name.

Note 1: Add-On Instruction In/Out parameters are not automatically generated, whether creating the tag database from the controller or from an import file.

Note 2: This feature is not available to Serial Gateway models.

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Create Tag Database from Import File: This option retrieves tags directly from an RSLogix L5K/L5X file. Although access to the controller is not necessary, descriptions are imported, and users have the ability to work offline, this option is slow and does not import I/O tags. Timer/Counter CTL bits are not imported.

Logix Database Options

Descriptions of the parameters are as follows:

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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 in order to preserve the server tag names. OPC client tag references will not be affected. If not chosen, new longer tag names will be created for those that were clipped. OPC clients referencing the clipped tag would have to be changed in order to reference the new tag.

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