Using Teamcenter variants

Using classic variants or product configurator, you can define options (for example, color) and the corresponding values for each option (for example, red and blue). You can then associate the options with an item revision, typically the top-level item in the structure. You can then define a variant condition (for example, load IF color=red) for any occurrence of components that are configurable, and therefore subject to variant rules. The master is the structure where no variant rule is applied. It is referred to as unconfigured.

Variants are defined in the Teamcenter program, Structure Manager. Typically, you create your QY CAD design and save it to Teamcenter. Using the rich client, the item revision is sent to Structure Manager to create the variant option’s allowed values.

You can define and attach additional logic to the item, as follows:

• Set error warnings for incompatible option values selected in the variant rule.

• Set default values for options.

• Set derived default values to allow one option value to set another.

Teamcenter evaluates the variant conditions on the occurrences in the structure against set option values, and components are configured or not configured according to the results of the evaluation. Unconfigured components can be hidden.

Classic variant configuration supports:

• Options that are a mandatory choice or an accessory.

• Components that may be configured by more than one option.

• Variant assemblies that may be shared between products.

Classic variant configuration does not support:

• Automatic creation of variant items.

• Updating of existing variant items.

Refer to the Teamcenter documentation, Getting Started with Product Structure, and Structure Manager Guide for detailed information on creating and configuring variants.

For this example of using classic variants, a top-level assembly is identified as Car Model G. It includes a body assembly and two choices of engine (1200 and 1600). You create variant data on the structure to allow configuration of one or the other engine.

First, in Teamcenter you create basic variant data:

• Define options

  Create an engine option on the item Car Model G with allowed values 1200 and 1600. You can later create other necessary options and allowed values. These options configure components lower in the structure.

• Add variant conditions

  Specify a variant condition on each engine component to configure it appropriately. For the 1200 Engine component, define a condition that loads this component only if the option engine is set to a value of 1200 (that is, Load IF engine=1200). Also define a condition for the 1600 Engine (that is, Load IF engine=1600).

Then, set a variant rule. There are three ways of setting a valid variant rule that configures an allowed variant of the product.

• Variant rule checks

  
  

  Prevents the designer from defining option values or combinations of option values that are not allowed.

• Derived defaults

  
  

  Allows one option value to set any number of other related option values.

• Fixed defaults

  
  

  Allows an option to be set to a specific value.

Variant data can be stored on the following objects:

• Item revision

• Occurrence

Variant data is owned by a specific revision of an item. As the item evolves, it may be necessary to change the set of allowed values for a particular option or possibly to add further options.

The interaction between Teamcenter variants and QY CAD documents is within the Assembly and Draft environments. The variant rule list is displayed on the Open dialog box. The variant rule option is not enabled until you select the item revision of an assembly that has variant rules associated with it. Once you select the appropriate value for your variant rule, your selection acts as a display filter. Only the components corresponding to the variant rule you choose are displayed when you open the document. Once the structure has been opened in QY CAD, you cannot change the selected variant rule. You can close and reopen the assembly using a different variant rule.

Assemblies configured with variant rules open read-only at all levels. The Read-Only Assistant displays a message indicating an assembly is opened with a variant rule. PathFinder displays the variant rule used to configure the direct document.

Any changes to the assembly must be saved to a new item using the Save As command. As a result, only the parts that are configured by the variant rule are saved to the new assembly. You cannot save an assembly opened and configured by a variant rule back to Teamcenter. You must open the assembly unconfigured to edit the assembly.

For comprehensive information regarding product structure and variants, refer to the Teamcenter documentation, Getting Started with Product Structure, and Structure Manager Guide.