[PCB_FORUM] Re: Retaining nets on free-standing vias
- From: "Douglas Stanley" <dstanley@xxxxxxxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Thu, 2 Mar 2006 10:32:15 -0800
My method doesn't really solve the problem, but it makes it easy to deal
with. I wrote a small SKILL routine that allows you to select any via
and change the via's net.
I works by clicking on a via (single select, window, or temp group) and
then clicking on any shape, pin, or cline. The via then takes on the net
of the shape/pin/cline you selected. Works like a champ. It's 30 lines
of code.
Douglas G. Stanley
Broadcom Corporation
(949) 926-5889
dstanley@xxxxxxxxxxxx
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of
Michael.Catrambone@xxxxxxxxxx
Sent: Thursday, March 02, 2006 9:55 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Retaining nets on free-standing vias
Hello,
I deal with this all the time.. The best way I found to handle it was to
define a small static shape on top of the via with the net name attached
to it. This shape is defined a little larger than the via geometry on
the top side of the PCB and whenever I move the via I make sure to
select the shape as well.
Kind of a pain but it gets me past the problem. Maybe someone else has
a better way of handling this.
Mike
"Daniel So" <danielso@xxxxxxxxxxxxx>@freelists.org on 03/02/2006
11:43:43 AM
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Subject: [PCB_FORUM] Retaining nets on free-standing vias
Hi Everyone
Please excuse me if this is an old subject.
I have thru-hole vias connected to a gnd plane on the top layer. There
is +5v plane on the bottom side of the PCB. There are no clines
connected to the vias so when ever I move the gnd plane, the vias are
now associated to the +5v plane. I now have to move the +5v plane before
moving back the gnd plane if I want to keep these vias associated to
gnd. This is really a bad problem on a multi-layer board with different
planes on different layers and when I have vias that I want to keep
associated to different nets.
Is there any way to keep the vias associated to the original nets
without connecting clines to them? Cadence did not have an answer.
Thanks for any suggestions
Daniel So
email: danielso@xxxxxxxxxxxxx
(See attached file: C.htm)
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