Mark,
If you export a sub-drawing it's a copy of components and etch into
one file.
You have the choice of preserving ref des's into the clip file or
not. It's a
way of doing in one step what you do in two separate steps. If you
use a temp
group it gives you the ability to select certain etch and components
that you
want to preserve. You can then import the sub-design into a
different board.
even edit the sub-drawing file if you wish to change ref des's. Look
under file->import
and file ->export for this command.
Mike
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Thursday, March 23, 2006 9:25 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: ref des problem while merging portions of multipl e
schematics (Concept)
Hi Mike,
We either package the modified schematic into an existing .brd (which
has the placement and routing for part of design already).
Matching ref des will keep their original placement.
OR...Bring in the placement through place.txt of only the components to
be cloned. Then clip in traces if necessary.
Charles,
As I mentioned, the GROUP property is also hard to manage. How do you
keep track of which ones were used?
We have not tried "sub-design" or "design reuse". Maybe it is time?
We have also been avoiding hierarchical schematics due to other issues.
regards,
Mark
gnieski_mike@xxxxxxx wrote:
What if you hard located only the ref des that you are cloning
placement on and leave the rest soft located? How are you cloning
the placement? sub-design or design reuse?
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Salberg
Sent: Thursday, March 23, 2006 8:53 AM
To: Cadence User Group
Subject: [PCB_FORUM] ref des problem while merging portions of multiple
schematics (Concept)
Hello all,
I am wondering how you all would handle this?
More and more, we are cloning schematic circuits from multiple previous
designs.
Reference designator management is a pain with Concept.
1. First, we bring in the pages or portions of pages we want to steal
from multiple previous designs.
Now we need to verify there are NO duplicate ref des.
2. So, we soft locate designators (because packager will fail with any
assigned duplicates).
3. But if we are also cloning placement of some components, then those
designators must remain hard located.
4. All Multi-section or multi-gate components must have a hard located
ref des in order to package into a single ic.
Problem:
How do you manage reference designators for this situation?
Thanks,
Mark
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