The Engineering structure form shows the entire structure, including all underlying levels, of the engineering item selected on the Engineering items form. The engineering structure has been copied from the CAD/PDM integration, and is itself used as the basis for the production structure.
If the engineering item has a production file linked to it, then this production file will also be displayed on the form. If there are multiple production files, the production file marked as the default production file is shown. A default production file has the Default check box selected on the Production files linked to engineering item form.
If you do not want to see the linked production file on the form straight away, deselect the 'Show linked production calculation' option in the Settings menu. This allows the data on the Engineering structure form to be displayed more quickly. For large production structures, you can select the check box yourself when you want to see the comparison with the engineering structure.
Differences between the structures
The engineering structure ought to be the same as the production structure. If that is not the case, this is indicated on the form. The differences marked on the form are listed below.
You can choose to display only the differing lines on the form, to make it clear which lines need to be dealt with. To do so, click on the toolbar at the top of the form.
Note: Some differences between the engineering structure and the production structure can be traced back to the order code of the part.
To some extent, the order codes of parts determine which engineering items and/or parts are transferred from the engineering structure to the production structure during synchronization. As a result, the production structure on the Engineering structure form may differ from the engineering structure without there being actual discrepancies. These differences are therefore not marked as discrepancies on the Engineering structure form.
The section below describes the impact on the production structure for each order code when the synchronization is successful.
Order code: Produce in new production file
The engineering structure is identical to the production structure if the order code of the parts is 'Produce in new production file', and the underlying parts have the order code 'In stock'.
If a part assigned to an engineering item has the order code 'Copy calculation (phantom)', the production structure has a flatter structure than the engineering structure. In the engineering structure, the calculation lines are on a level below the engineering item, whereas in the production structure, they are on the same level as the part.
Order codes: Purchase to order, custom; Purchase to order, commercial quantity; In stock; Supplied by customer
Initially, production files for a customer order do not contain any parts with the order code 'Purchase to order, custom', 'Purchase to order, commercial quantity', 'In stock' or 'Supplied by customer'. In some situations, however, a part may have had a different order code at first ('Produce in new production file' or 'Copy calculation (phantom)'), and is assigned one of the order codes listed at a later stage. In that case, the engineering structure does contain calculation lines, but the production structure does not.
Imagine the engineering for a customer order has already taken place, but the capacity for the production of the part turns out to be insufficient. You ask the customer to deliver the assembled component. You change the order code 'Produce in new production file' into 'Supplied by customer'. The engineering structure will now show the component with the calculation lines, but the production structure only shows the assembled component.
Line added: If the icon is shown on the left-hand side of the form, the engineering structure has a line that is missing from the production structure. If the icon is shown on the right-hand side of the form, the production structure has a line that is missing from the engineering structure.
In the following cases, production calculation lines are not marked as added during production:
The part type is 'Costs' or 'Services'.
The line was created in the actual costing phase.
The line is marked as a 'special BOM part'.
In the next scenario, part calculation lines are not marked as 'Added in engineering':
Line deleted: The icon indicates that a line has been deleted from the structure that still exists in the other structure.
[Cell color]
Indicates which field differs from the field in the other structure. Discrepancies are identified for the following fields:
Quantity
Length, Width, Height
Waste %
Description
Remark
CAD reference, CAD classification
Unit, Unit code
Line
The discrepancies actually displayed are set on the Compare fields form. Just select the fields for which you want to see discrepancies. This form also allows you to select the color for cells with discrepancies.
Indicates that the structure contains one or more lines that have been changed, added or deleted (see above). The image is also visible for collapsed lines.
Differences between the structures may be caused by:
Changes to the engineering structure that cannot be applied to the production structure, for example because the user has insufficient rights, production calculation lines have already been authorized, the status of the lines do not permit it, etcetera.
Changes to the production structure that do not originate from the engineering structure, such as production calculation lines for paint, oil, etcetera, that do not have to be included in the drawing.
Quantities
The structure form lists various quantities. These quantities are explained below.
An engineer draws one copy of a finished product and its components. In a production file, however, calculations are often performed using multiple copies of the finished product if more than one copy of the product needs to be manufactured. During the synchronization of engineering with production, the engineering quantities are converted to production quantities. On the Engineering structure and Production structure forms, various quantities are displayed. The example below explains these quantities.
Quantity in engineering structure
The quantity on the Engineering BOM form represents the number of components a single finished product has in engineering and the number of parts a single component consists of. This quantity is not displayed on structure forms.
To manufacture one conveyor belt, you require two frames and one motor.
To create one frame, you need three round 10 pipes, and one round 50 pipe.
The E Quantity column on the structure forms shows the number of components a single finished product consists of in the engineering structure, and the total number of parts required for the manufacture of the finished product. If a conveyor belt has two frames in engineering, the number of pipes required for one frame is multiplied by two.
To manufacture one conveyor belt, you require two frames and one motor.
To create two frames, you need six round 10 pipes, and two round 50 pipes.
Converted quantity
If multiple copies of a product are manufactured, then during synchronization the engineering quantities must be multiplied by the number to be produced. The 'Converted quantity' is the 'Quantity in engineering structure' multiplied by the number of copies to be produced. The 'Converted quantity' on the structure forms clearly shows any differences between the quantities in the engineering structure and the production structure. You can easily compare the 'Converted quantity' with the quantity to produce (see 'Quantity in production structure'), without having to convert the quantities yourself.
To manufacture two conveyor belts, four frames and two motors are required.
To create four frames, you need twelve round 10 pipes, and four round 50 pipes.
Quantity in production structure
The quantity to be produced is shown in the production file. On the structure forms, this quantity can be found in the Pr Quantity column. After synchronization of the engineering data with the production data, this quantity should be equal to the 'Converted quantity'.
Structure
Quantity in engineering structure
Converted quantity
Quantity in production structure
Conveyor belt
1
2
2
Frame
2
4
4
Pipe 1
6
12
12
Pipe 2
2
4
4
Motor
1
2
2
If the drawing is modified, the engineering quantities may differ from the quantities to be produced. If the engineer decides to add a frame to the conveyor belt (thereby increasing the number of frames to three), the following quantities will be changed: the quantity in the engineering BOM, the quantity in the engineering structure as shown on the structure forms, and the converted quantity. The quantity to be produced (the quantity in the production structure) is not adjusted until after the synchronization.
Structure
Quantity in engineering structure
Converted quantity
Quantity in production structure before synchronization
Quantity in production structure after synchronization
Conveyor belt
1
2
2
2
Frame
3
6
4
6
Pipe 1
9
18
12
18
Pipe 2
3
6
4
6
Motor
1
2
2
2
Production file supplying multiple production files
If there are multiple instances of a production part in a single sales file, the production files can be merged into one production file. The production structure quantity of this merged production file is the sum of the quantities of all parent production files it supplies.
Example
A sales order contains the following sales lines:
Conveyor belt A with two frames and a motor
Conveyor belt B with three frames and a motor
As the frames of both conveyor belts are identical, they will be merged into one production file. On the structure forms, the frame quantity in the production structure of the merged production file is '5' (2+3=5 frames), where conveyor belt A has a value of '2', and conveyor belt B has a value of '3'.
Structure
Production structure quantity
Structure
Production structure quantity
Production structure quantity
Conveyor belt A
1
Conveyor belt B
1
Merged production file for frames
Frame
2
Frame
3
Frame
5
Pipe, round 10
6
Pipe, round 10
9
Pipe, round 10
15
Pipe, round 50
2
Pipe, round 50
3
Pipe, round 50
5
Motor
1
Motor
1
Dimensions and line code/position number
The settings on the Engineering form determine which engineering structure dimensions and production structure dimensions are compared, and which item the engineering item line number is compared with. The Use net sizes setting controls whether the net sizes of the engineering item are compared with the net sizes in the production file, or with the dimensions; the Use position number setting controls whether the line number of the engineering item is compared with the line number in the production file or with the position number.
Releasing revisions
The form also lists the revision statuses. This form allows you to release engineering item revisions. The icons provide additional information about the revision status of an engineering item. The icons have the following meanings:
The revision is not the last revision, but it is the revision that was released most recently. The more recent revision has not been released yet.
The revision is not the last released revision; a more recent released revision exists.
To display the documents linked to the engineering items, select the Documents pane check box from the View menu. If there are multiple instances of a document, the document is displayed just once.
on the toolbar at the top of the form. 
Impact of order codes on production structure
The revision is not the last released revision; a more recent released revision exists.
