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 Changing a symbol in PCB Editor 

Last post Fri, Jan 8 2010 9:43 PM by twill07. 7 replies.
Started by twill07 16 Sep 2009 07:49 AM. Topic has 7 replies and 2778 views
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  • Wed, Sep 16 2009 7:49 AM

    • twill07
    • Not Ranked
    • Joined on Mon, Sep 14 2009
    • Posts 8
    • Points 130
    Changing a symbol in PCB Editor Reply

    I had a question about changing a symbol in PCB Editor. I desire to change a single part footprint in Editor.  In layout this was very simple, by right-clicking on the part, then properties, then a graphic would even show the footprints.  This is the same idea I want to do in PCB Editor.  My symbol directory is at the root but i do not wish to change the footprint under the netlist evertime and save and import just to change the footprint of one part.  Can this be done quicker?

    • Post Points: 20
  • Wed, Sep 16 2009 7:52 AM

    Re: Changing a symbol in PCB Editor Reply
    You'd probably be better asking this in the PCB Design forum...

    Regards,

    Andrew
    • Post Points: 20
  • Wed, Sep 16 2009 8:29 AM

    • twill07
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    • Joined on Mon, Sep 14 2009
    • Posts 8
    • Points 130
    Re: Changing a symbol in PCB Editor Reply

     thanks

    • Post Points: 20
  • Wed, Jan 6 2010 9:05 PM

    Re: Changing a symbol in PCB Editor Reply

     I was just about to start a new thread when i found this.  I am trying to do the same thing, change a footprint symbol in PCB editor once the design has already been netlisted and the components placed. ANyone?

    thanks,

    -justin

    • Post Points: 20
  • Wed, Jan 6 2010 9:44 PM

    • Tawna
    • Top 25 Contributor
    • Joined on Fri, Jul 11 2008
    • Snohomish, WA
    • Posts 208
    • Points 5,500
    Re: Changing a symbol in PCB Editor Reply

    Hi Justin,

    Please ask the question in the PCB Design Forum.   You'll have a better chance at getting a response there.

     Best regards,

    Tawna

    Best regards, Tawna Wilsey Staff Support AE, Global Customer Support Cadence Design Systems, Inc.
    • Post Points: 20
  • Wed, Jan 6 2010 9:54 PM

    Re: Changing a symbol in PCB Editor Reply
    Hi Tawna,

    In fact I already moved the question to the PCB Design forum...

    Regards,

    Andrew.
    • Post Points: 20
  • Wed, Jan 6 2010 10:05 PM

    • redwire
    • Top 10 Contributor
    • Joined on Thu, Jul 17 2008
    • Allen, TX
    • Posts 874
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    Re: Changing a symbol in PCB Editor Reply

     Ok, some basics.  Allegro is netlist driven.  That means you can't force a change without a representative change to the netlist.

    The *right* way to do it is from the schematic tool.  You always have the option for any part coming in to have alternate padstacks and then you simply select the one you want.

    But let's say you want to break the system and do it anyway. :)  If you have the proper license, then simply click on Logic->Part Logic and edit in that pop-up box.  If you need to change net connections you use Logic->Net Logic to alter the pin connectivity.

     HTH

    • Post Points: 20
  • Fri, Jan 8 2010 9:43 PM

    • twill07
    • Not Ranked
    • Joined on Mon, Sep 14 2009
    • Posts 8
    • Points 130
    Re: Changing a symbol in PCB Editor Reply

     By going under options and allowing to edit a part under logic > part logic this got me to a pop up window. When I select the part I wish to change, I click pyhsical package and select the new part. After that, a warning pops up not allowing me to make the change because the part is a "concept component.  No updates to the value, tolerance, or package fields are allowed." how can I get pass this?

    • Post Points: 5
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Started by twill07 at 16 Sep 2009 07:49 AM. Topic has 7 replies.