I also had the same problem. The quick fix for me was to attach a new net
( I called it "no_conn") to all the un-connected pins and re -generated the
IPC file. I told the board house to ignore pins connected to this net. This
seemed to work.
I have a "IPC-D-356 for dummies" word document that I can forward to you if
you like, maybe that will help.


----- Original Message -----
From: "Darryl Newberry" <[EMAIL PROTECTED]>
To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
Sent: Friday, February 15, 2002 2:40 PM
Subject: [PEDA] IPC-D-356 problem


> I included an IPC test point (net list) output in my latest board. The
board
> house compared the Gerber-generated net list to the IPC net list and came
up
> with discrepancies. But the board house was too stupid to find the
problem.
>
> Protel puts unconnected pads in the .IPC file and leaves the net name
field
> blank for all unconnected pads. The board house front end system created a
> spurious net based on this, and assigned all the unconnected pads to it.
The
> order (quick turn) was placed on hold. So I guess I lost a day.
>
> I scrubbed the web a little, and according to what I found, Columns 4-17
are
> supposed to contain unique net ID's in alphanumeric form. "N/C" may be
used
> in columns 4-6 for single point networks, in place of a unique net ID. If
> columns 4-17 are blank when column 2 is a 1 or a 2, it should be
considered
> a fatal error.
>
> So my conclusion would be that neither Protel output or the board house
> system is strictly compliant on this point. I don't have a copy of
> IPC-D-356, so can anybody confirm?
>
> Darryl Newberry
> Freedom Scientific
> 11800 31st Court N
> St Petersburg FL 33716
> (727) 803-8000 tel
> (727) 803-8001 fax
> http://www.freedomscientific.com
>


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