KOMPAS-3D v23

The values of the property Position of the constituent parts of the assembly can be determined automatically. To do this, use the Set ref.Nos command. The button of this command is located on the Product BOM panel if:

•enabled display columns Position in the table of properties,

•If no associated BOMs are attached to the assembly (this can be verified in areas for working with documents on the Product BOM panel using the command Linked BOMs management).

After invoking the Reference number command, the values of the Position property for the assembly components are recalculated and displayed in the Position column. Previous values, if they were set, will be deleted. If there are leader landings in the assembly, the new numbers are also displayed in the graphical area — on the leader landings.

Automatic updating of reference numbers is not provided, i.e., if the numbering has been disturbed – for example, as a result of the deletion/addition of constituent parts of product or changes in their designations/names – it is necessary to set the reference numbers again.

Numbering is done with the reserved lines taken into account. The number of them in all sections is considered equal to 2, i.e., the numbering in the section starts with a number that is 2 greater than the number of the last BOM item in the previous section.

The arrangement of position numbers will be affected BOM style settings, included in current description, as well as the assembly settings:

•Start numbering at the initial position numbers specified during the BOM style settings.

•If the sorting by desending order within the section configuration enabled., then the numbers are assigned first to the constituent parts of the last section, then to the penultimate section, and so on.

• The components are skipped in the calculation of item numbers for  that

•are located in the sections with with designations placing disabled

•either excluded from the product BOM or from the current description of the BOM.

For example, if the first component in the section has position 1, and the second component is excluded from the product BOM, then the third component will have position 2. The positions of omitted component, if they were specified, will not be deleted or changed.

•Constituent parts corresponding to constituent parts for which editing is forbidden are not skipped; however, their current positions cannot be changed due to the editing restriction. For example, if the first component in the section has position 1, and editing is forbidden for the second component, then the third component will receive position 3. The position of the second component will not change.