[PEDA] GND Net gone

Sat Jul 29 23:08:17 CDT 2006

As fas as I know nothing was changed. I `loaded' all my preferences from the 
previous installation although I still had to tweek a few things to get it 
the way I wanted.

I hardly ever use hidden pins for the obvious reason that you can't see 
them. The only exceptions are pins that are not used by the device (say a 
single diode in an SOT23 package, for example) in which case the hidden pin 
is there to keep the pcb footprint happy (these are also the ones that I 
would like not to have automatically imported to the pcb file as a net).

I have and always do compile the project (I have never used the compile 
schematic only option) so this should be a complete compile. When I go to 
update the pcb (from within the pcb itself) the ECO list does not show GND. 
It does show 0 which is a rogue net as it should only be there because of 
the unused pins but appears to want to go to where all my GND connections 
should be.

If I use the Netlist function in the schematic (I select protel option) it 
also shows 0 as the GND net even though every Power Port is correctly 
labelled GND.

Best Regards

(Mr) Laurie Biddulph
Mobile: 0400 257 645

Elby Designs
ABN: 70 022 727 605
http://www.elby-designs.com

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----- Original Message ----- 
From: "Ian Capps" <icapps at bigpond.net.au>
To: "Protel EDA Discussion List" <PEDA at techservinc.com>
Sent: Sunday, July 30, 2006 12:37 PM
Subject: Re: [PEDA] GND Net gone

> Hi Laurie
>
> It sounds like you have hidden net problems. Did you do anything with your
> libraries when you changed OS? GND may have dissapeared becouse you have a
> hidden pin connected to Vss or something.
>
> Try compiling the project (not just the schematic) and see what errors 
> come
> up. This may lead you to the cause.
>
> Ian Capps
> ----- Original Message ----- 
> From: "Elby Designs" <elby_designs at ozemail.com.au>
> To: <PEDA at techservinc.com>
> Sent: Sunday, July 30, 2006 11:58 AM
> Subject: [PEDA] GND Net gone
>
>
>>I have been using Altium Designer DXP 2004 with SP4 on Windows 2000 but
>>recently had to change to a new computer now runnings Windows XP.
>> I have a project that appeared to be okay on the older setup but I have a
>> problem with the current installation.
>>
>> When updating the PCB file, having just compiled the project in the
>> schematic section, the update refuses to recognise my GND nets. All the
>> other power nets are listed but not GND. Is there anyway of
>> seeing/editing/fixing the nets that the schematic section is working with
>> that might explain why they are not showing up in the pcb?
>>
>> Another minor problem is that any pads marked as NC or 0 (unsued pads on
>> an SOT23 or ic for example) always come across to be joined together. Is
>> there anyway of telling the system to simply ignore nets of this nature?
>>
>> Best Regards
>>
>> (Mr) Laurie Biddulph
>> Mobile: 0400 257 645
>>
>> Elby Designs
>> ABN: 70 022 727 605
>> http://www.elby-designs.com
>>
>> This e-mail and any files transmitted with it are confidential and
>> intended for the addressee only.
>> If you are not the addressee you may not copy, forward, disclose or
>> otherwise use it, or any part
>> of it, in any form whatsoever. If you have received this e-mail in error
>> please notify the sender
>> and ensure that all copies of this e-mail and any files transmitted with
>> it are deleted. Any views
>> or opinions represented in this e-mail are solely those of the author and
>> do not necessarily
>> represent those of Elby Designs. Although this e-mail and its attachments
>> have been scanned for the
>> presence of computer viruses, Elby Designs will not be liable for any
>> losses as a result of any
>> viruses being passed on.
>>
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