Make sure that your BOM is set to have a delimiter in the view properties. If it is set to none then the sub parts will get whole numbers.
As for the root cause of this, I once wrote an iLogic rule that would go through all sub assemblies and renumber them to match the item numbering of the top level assembly. Here is that rule. This gets run from the assembly file.
Sub Main()
Dim sErrMsgBadDoc As String
sErrMsgBadDoc = "This macro requires active assembly document."
If ThisApplication.ActiveDocument Is Nothing Then
MessageBox.Show(sErrMsgBadDoc)
Exit Sub
End If
If Not TypeOf ThisApplication.ActiveDocument Is AssemblyDocument Then
MessageBox.Show(sErrMsgBadDoc)
Exit Sub
End If
Dim oTxnMgr As TransactionManager = ThisApplication.TransactionManager
Dim oTxn As Transaction = oTxnMgr.StartTransaction(ThisApplication.ActiveDocument, "BOM Sync")
Dim oDoc As AssemblyDocument
oDoc = ThisApplication.ActiveDocument
Dim oBOM As BOM = oDoc.ComponentDefinition.BOM
oBOM.StructuredViewEnabled = True
oBOM.StructuredViewFirstLevelOnly = False
oBOM.StructuredViewDelimiter = "."
' Find structured view
Dim oStructView As BOMView = oBOM.BOMViews("Structured")
If oStructView Is Nothing Then
' No struct view even if enabled? Probably because of LOD
MessageBox.Show("Cannot get structured BOM view, make sure Master LOD is active")
oTxn.End
Exit Sub
End If
' Now get rows and update item numbers for sub assemblies recursively
Dim oRow As BOMRow
For Each oRow In oStructView.BOMRows
If Not oRow.ChildRows Is Nothing Then
UpdateItemNumbers(oRow, oBOM.StructuredViewDelimiter)
End If
Next oRow
oStructView.Sort("Item")
MessageBox.Show("BOM item numbers have been synced", "BOM Sync")
oTxn.End
End Sub
Sub UpdateItemNumbers(oRow1 As BOMRow, sDelim As String)
' assembly row expected as input
If oRow1.ChildRows Is Nothing Then
Exit Sub
End If
' get sub BOM and its structured view
Dim oBOM2 As BOM = oRow1.ComponentDefinitions(1).BOM
If oBOM2.StructuredViewEnabled = False Then
Try
oBOM2.StructuredViewEnabled = True
Catch
'MessageBox.Show("Could not enable BOM on " & oRow1.ComponentDefinitions.Item(1).Document.PropertySets.Item("Design Tracking Properties").Item("Part Number").Value)
GoTo NextRow:
End Try
End If
Dim oStructView2 As BOMView = oBOM2.BOMViews("Structured")
' No structured view in this sub bom? Nothing to do.
If oStructView2 Is Nothing Then
Exit Sub
End If
' Now iterate sub rows and match them to rows in sub bom. Transfer item number if needed
Dim oRow2 As BOMRow
For Each oRow2 In oRow1.ChildRows
'MessageBox.Show(oRow2.ComponentDefinitions.Item(1).Document.PropertySets.Item("Design Tracking Properties").Item("Part Number").Value)
' Find this row in sub bom
Dim oRow3 As BOMRow = FindRow(oStructView2, oRow2)
If Not oRow3 Is Nothing Then
If Not oRow2.ChildRows Is Nothing Then
' Workaround for assembly renumbering to preserve parent numbers
ModifyAssemblyItemNumber(oRow2, oRow3, sDelim)
ElseIf TypeOf oRow2.ComponentDefinitions.Item(1) Is VirtualComponentDefinition Then
'MessageBox.Show(oRow2.ComponentDefinitions(1).PropertySets.Item("Design Tracking Properties").Item("Part Number").Value & vbCr & oRow3.ItemNumber)
Dim oItem As String' = VirtualItem(oRow3)
oItem = oRow3.ItemNumber
oRow2.ItemNumber = oItem
Else
oRow2.ItemNumber = oRow3.ItemNumber
End If
End If
'Recurse
If Not oRow2.ChildRows Is Nothing Then
UpdateItemNumbers(oRow2, sDelim)
End If
Next oRow2
NextRow:
End Sub
' compares two BOM rows from different BOMs if they refer to same components
Function MatchRows(oRow1 As BOMRow, oRow2 As BOMRow) As Boolean
If oRow1.ComponentDefinitions.Count <> oRow2.ComponentDefinitions.Count Then
MatchRows = False
Exit Function
End If
Dim i As Integer
For i = 1 To oRow1.ComponentDefinitions.Count
If oRow1.ComponentDefinitions(i).Document.FullDocumentName <> oRow2.ComponentDefinitions(i).Document.FullDocumentName Then
MatchRows = False
Exit Function
End If
Next i
'Fix for virtual components getting all the same item number
If TypeOf oRow1.ComponentDefinitions(1) Is VirtualComponentDefinition Then
If oRow1.ComponentDefinitions(1).PropertySets.Item("Design Tracking Properties").Item("Part Number") IsNot oRow2.ComponentDefinitions(1).PropertySets.Item("Design Tracking Properties").Item("Part Number")
MatchRows = False
Exit Function
End If
End If
MatchRows = True
End Function
' finds BOM row in the specified BOM view which refer to same component as input row
' no recursion, first level search only
Function FindRow(oBOMView2 As BOMView, oRow2 As BOMRow) As BOMRow
Dim oRow As BOMRow
For Each oRow In oBOMView2.BOMRows
If MatchRows(oRow2, oRow) Then
FindRow = oRow
Exit For
End If
Next oRow
End Function
' Modyfing item numbers for assembly works differently than for parts.
' For part, only last part of the number is modified (for example "3.4", when set to "10" will change to "3.10").
' For assemblies, override is set which replaces everything (for example "3.4", when set to "10" will change to "10").
' Looks like a defect in API, it should be consistent. Ideally, API should provide both ways of modifying the part number.
' Workaround it to preserve the inherited part of the number (but it won't update when parent's number changes because of
' override.
Sub ModifyAssemblyItemNumber(oDestRow As BOMRow, oSrcRow As BOMRow, sDelim As String)
' source item number is always 1st level only
' get last part of current item number, use current delimiter
Dim sItem As String
sItem = oDestRow.Parent.ItemNumber
sItem = sItem & sDelim & oSrcRow.ItemNumber
oDestRow.ItemNumber = sItem
End Sub
Andrew In’t Veld
Designer / CAD Administrator
