| Engineering BOMsAn engineering bill of
material (EBOM) describes the relationships of components to their parent items
in the same way that a production bill of material
(PBOM) does. The main difference between an EBOM and a PBOM is that rather than
having a sequence number to take
account of items valid on different dates, EBOMs use different revisions of E-items. Copying an EBOM A single-level EBOM can be copied to a single-level PBOM by
one of the following three methods: - All Available Lines. All PBOM lines expire and are replaced by the EBOM lines and
non-EBOM lines. Non-EBOM lines are lines from a non-project PBOM that are
copied to a project. See the copy method NonProj Item to Proj Item.
- Only Corresponding Pos.. Lines in the PBOM whose line numbers match the
line numbers in the EBOM are replaced by the corresponding EBOM lines and
non-EBOM lines. The other PBOM lines remain unchanged.
- Corresp. and Linked Pos.. Both lines in the PBOM whose line numbers match the EBOM line
numbers, and lines which do not match but have been created by previous
finalizing actions performed on engineering data (the Link with EDM check
box in the Bill of Material (tibom1110m000) session is
selected, are replaced by the EBOM lines and non-EBOM lines.
The other lines from the
PBOM remain unchanged. These unchanged lines are not engineering-related. An
example of one of these lines could be packing materials. In this way, you can
make a clear distinction in production BOMs between engineering-related
components and logistics components that do not relate to engineering. If you copy the EBOM to the PBOM, the expiry date of the PBOM
component is filled by either: - The effective date of
the revision for the parent E-item from the EBOM.
- The effective date of
the PBOM line, if it expires later.
The effective date of the PBOM line expires later than that
of the EBOM line if: To include the line from
the EBOM, a new serial number is created for the line in the PBOM. Determining engineering BOM copy data When you copy an EBOM line to a PBOM using the EBOM Copy Data (tiedm1120m000) session, LN copies default values to the new BOM from
the EBOM from the following fields: - EBOM Copy Method.
- To Item.
- Item Category.
An EBOM's parent item is
a particular revision of an E-item. The
components can be items or E-items. When you copy a component from an EBOM to a PBOM, you can use
the EBOM Copy Data (tiedm1120m000) session to define one of the following copy methods: No Copy Action No components are
copied. This occurs in the following circumstances: - The units of the
components in the Component and To Item fields do not match.
- There is no valid
released revision of the E-item.
- The component in the
EBOM is not a physical E-item.
- A project item is
copied to another project item, for which there is no relationship with either
the item or with the project.
Copy E-Item to Item Copy the E-item to an
item and copy the relevant EBOM line to the PBOM line. NonProj Item to Proj Item Do not copy an E-item
or EBOM, but copy a non-project item to a project item (that is, a standard
item to a customized item). Also copy the non-project item's bill of material
and routing to the project item's bill of material and routing. EBOM to Job Shop PBOM Only Copy only one line from
the EBOM to the PBOM.
Which copying method should I use? To determine which copying method you must use, answer
question 1 and follow the instructions. Question 1 Is the source component
a project item (that is, is a project defined in the first segment of the item
code)? - If the answer is yes, proceed with question 3.
- If the answer is no, proceed with question 2.
Question 2 Is the target component
a project item? - If the answer is yes, select copy method NonProj Item to Proj Item.
- If the answer is no, proceed with question 4.
Question 3 Is there a relationship
with the same project? - If the answer is yes, select copy method EBOM to Job Shop PBOM Only.
- If the answer is no, proceed with question 4.
Question 4 Is there a relationship
with the target item? - If the answer is yes, proceed with question 5.
- If the answer is no, select copy method No Copy Action.
Question 5 Does the item exist
already? - If the answer is yes, select copy method EBOM to Job Shop PBOM Only.
- If the answer is no, select copy method Copy E-Item to Item.
Relationships When searching for items using relationships defined in Engineering Item Revision (tiedm1100m000) session, LN uses the following
rules: - When data is copied to a
project, relationships with project items take priority over relationships with
non-project items.
- When data is not copied
to a project, only relationships with non-project items apply.
When searching for relationships, the following priorities
apply: - relationships created
by, or used in, copying from an EBOM have priority over relationships created
by, or used in, copying an E-item to an item.
- Relationships created
by, or used in, copying an E-item to an item have priority over relationships
not used in copying.
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