Why does UB export a BOM with the same part type in multiple row?

[dbur]

Everytime I export a BOM in UB it insists on treating identical parts as if they are different.   I have qty72 10nF 0604 caps and it places them on 4 differnet lines, each with their own separate qty.  These parts are identical, cloned in MS by copy and paste.

It's getting to be a pain to re-do the BOM everytime to get identical parts combined into a single spreadsheet entry.

Any ideas?

[GarretF]

Hi dbur,

I tried to replicate your problem, but it seems to work correctly for me.

Ultiboard groups items for the BOM if the VALUE and SHAPE attributes are the same. Can you check your file or post it here so I can take a look?

The easiest ways to check your file is to look in the Spreadsheet View on the Parts tab or of course in the BOM where it shows the VALUE and SHAPE.

[dbur]

They are identical in every way I can tell.  I can't post the file publicly but I could send it to an NI support engineer.

Thanks.

[GarretF]

HI dbur,

Please do send your file to the NI support engineers so that we can take a closer look at the file and identify if there is a problem with the file or with Ultiboard.

[stressed_user]

garret, debur,

Since a few months, this happens to me as well. I use V10.1

Parts that are identical in the schematic, shape, and layout appear as two or three different lines in the BOM

That never happened before, and I assumed I had done something wrong...

At first, I thought this was because I copied some parts of other schematics, but I tried that with a small testdesign, and it seemed ok.

Hope you can find a solution or a reason why...

It gives a lot of extra work, and there's allways a chance to make extra mistakes when editing excel files manually...

[stressed_user]

Garret,

In addition to previous reply, a view of a faulty bom (it mainly has 0 an 1 ohm resistors...)

VALUE SHAPE # REFDES

0 RESC3216X84N 2 R1,R5

0 RESC1608X63N 3 0_CW,4_AM,5_RD

0 R0805 1 R3

0 RESC1608X63N 1 3_WWHO

0 R0805 2 R2,R4

0 RESC1608X63N 1 7_BL

0 R0805 1 R6

0 RESC1608X63N 4 1_CWHO,2_WW,6_GR,XPERGB

1 R0805 1 R8

1 RESC3216X84N 1 R7

in the netlist you can see that R3 and R4 are identical:

(instance "R0805" "R4"

(device "0")

(value "0") 

(gateswap "0")

(pinswap "0")

(component_space "0.00000000e+000")

(component_group "")

(settings_locked "0") 

(comp_variants "Default1;") 

(comp_variant_independent "0")  

(pin "1" 

(net "9") 

(pintype "PASS") 

(gategroup "A") 

(pingroup "A") 

(label "1")

(gate "")

) 

(pin "2" 

(net "15") 

(pintype "PASS") 

(gategroup "A") 

(pingroup "A") 

(label "2")

(gate "")

(instance "R0805" "R3"

(device "0")

(value "0") 

(gateswap "0")

(pinswap "0")

(component_space "0.00000000e+000")

(component_group "")

(settings_locked "0") 

(comp_variants "Default1;") 

(comp_variant_independent "0")  

(pin "1" 

(net "2") 

(pintype "PASS") 

(gategroup "A") 

(pingroup "A") 

(label "1")

(gate "")

) 

(pin "2" 

(net "26") 

(pintype "PASS") 

(gategroup "A") 

(pingroup "A") 

(label "2")

(gate "")

stiil they appear in different lines in the BOM...

[GarretF]

Hi stressed user,

I don't know what version you have, but I've tried your example in version 10.0, 10.1, and 11.0, and I wasn't able to reproduce this problem in any of these versions. I'd still like to figure out what is going on. The best option is of course to send the file to our support team. If you can't, would it be possible to post a reduced file here on the forum, including just the resistors.

Follow the steps below to make sure you delete all information except the resistor parts (I've given instructions for version 10.0 since based on your netlist, I think that is the version you have). It probably goes without saying, but create a copy of the design and modify the copy instead of your design. There is no way to recover this information once you've saved the file. After doing these steps, try to BOM export again, and see if it still has the problem.

Delete all net information:

1. Click Tools > Netlist Editor. The Net edit dialog shows.
2. Click Remove.  The Select the net to delete dialog shows.
3. Select all the nets (select the first, then hold shift and select the last), and click Delete.
4. Click OK in the Net edit dialog to close the dialog

Delete all group information:

1. Click Tools > Group Editor. The Edit Groups dialog shows.
2. For each tab, select all items in the Groups list (select the first, then hold shift and select the last), and click Delete.
3. Click OK in the Edit Groups dialog to close the dialog

Delete all parts (except the resistors):

If you have a version with the spreadsheet

1. Select the rows in the spreadsheet not containing the resistors
2. Click Edit > Delete

If you have a version that does not have the spreadsheet

1. Manually select and delete the parts from the workspace

Delete all copper:

1. Click Edit > Copper Delete > All Copperr. Click OK to confirm

You can also reset options in the PCB properties, although I cannot imagine how any of the options here could be helpful.

[dbur]

I have submitted my file to NI and they have confirmed that the problem is repeatable on my file and also that there is no difference between the parts.  No solution was found, though they did forward the file and defect to the design team for analysis.

[GarretF]

Thanks dbur. Your report was submitted, I just hadn't looked yet, but I can see the file now. 

[stressed_user]

Hi Garret,

I could sned you the whole design, what mail-adfrs should I send it to?