[PCB_FORUM] Re: Soft to hard location (Concept v.15.1)
- From: "Bolman, Shirley H" <shirley.h.bolman@xxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Sat, 11 Jun 2005 14:11:41 -0700
Hi again
I am a Librarian who uses a test schematic and board to check the
Library parts I build before
they go into the library. My schematic get changed more than any others
I can think of.
I use the Preserve selection when I package and any new parts I am
testing get a new reference
designator, and the rest of them that are on my board stay the same. The
only time parts fall off
is if I move the new parts to a different part of the library before I
remove them from the schematic.
I know this doesn't sound like "real world" work to you all, but I have
had many years of schematic
experience and do know for a fact that the REPACKAGE option will change
the reference designators
for the whole schematic every time you package. Hard Locating the
reference designators also make it
much more difficult to rename the reference designators at the end of a
design and the board is gridded.
It sounds like you don't rename your parts based on an x,y grid at the
end of the design.
Shirley
________________________________
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Friday, June 10, 2005 11:35 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Soft to hard location (Concept v.15.1)
Hello Pattie,
Ahhh...yup! Hate it.
We have been instructed to use "repackage" so it will pick up all new
changes and create updated packager files. Does "preserve" pick up all
new changes...every time?
Because of this "hate to see parts blown away" thing, we resort to hard
locating everything. We just can not afford the hit and this seems to
work fine, except we have the pain of hard locating in the schematic as
mentioned earlier.
Thanks for your feedback though. I will keep that in mind.
Mark
Patricia Mayer wrote:
Hey Mark,
In Concept under File>Export Physical, in the Package Option
area, click Preserve. That will retain your reference designators during
re-packaging. Don't you just hate to see all your components fly off the
board after a schematic change?
Pattie
@};--
Senior PCB Designer
Ditech Communications
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Mark
Salberg
Sent: Friday, June 10, 2005 10:17 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Soft to hard location (Concept v.15.1)
Kevin,
We always hard locate ref des in Concept because we had been
told that
if you do not, Cadence can change the ref des while re-packaging
at a
later time.
This "soft location thing" never made any sense to us.
If anyone from Cadence is out there, can you explain WHY
reference
designator are not always HARD LOCATED. This is done if you
assign
designators in the schematic manually. We especially have to do
this on
multi sectioned gates / components to ensure all sections
package into
one IC.
And...while I am at it, it allows you to define duplicate
designators
which then fails the packager.
Kevin, if you have all ref des soft located...you have never ran
across
any unexpected ref des changes in Allegro?
I have been warned of this many times. To the point that I
always hard
locate.
I would love to find out the rhyme or reason behind this.
Regards,
Mark
Kevin McCowan wrote:
I know this isn't an answer, but why do you want the
locations to be hard. I've found them to cause
me grief over the centuries. Maybe I can still learn
a thing or two.
Oh, and I don't think there is a better way. Maybe a
setting
that makes it put them on as hard. And on your 2nd
question,
I think you need to package to get the refdes's, don't
you?
Kevin McCowan
Sr. PCB Designer
TSI Telsys
Mark Salberg wrote:
Is there an easier way to hard locate reference
designators in Concept?
When allowing Concept to assign ref des.
We are still doing the old,
find $LOCATION on each page.
Change "group" A
Ctrl E
find / replace $LOCATION with LOCATION
save text file
save schematic page
There should definitely be a better way!
Also, is there a file (prior to packaging to
Allegro) that lists all
ref des used?
We usually package, then run a component report
to see.
Thanks,
Mark
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