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  3. Netlisting Schematic Part with no pins

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Netlisting Schematic Part with no pins

mvonahnen
mvonahnen over 16 years ago

 Is there a way to prevent the netlister from removing parts in the schematic with no pins?  We create parts in our schematics that represent the PCB board part number in the BOM and have text in the PCB for symbolization.  Is there a configuration to prevent the ALG0060 warning and resultant removal of the part from the Allegro?

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  • Khurana
    Khurana over 16 years ago

    Try with the part fixed in Allegro then import netlist.  Make sure that Ignore Fixed Property is not checked.

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  • mvonahnen
    mvonahnen over 16 years ago

     I am not sure exactly what you are saying.  I thought the Fixed Property was in Allegro PCB.  I am talking about generating the schematic in Allegro Design and then creating the PCB netlist.  

     I guess I could instantiate the schematic symbol in Design and load the footprint manually in PCB, but that defeats the purpose.  

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  • Khurana
    Khurana over 16 years ago

     OK.  What are you using for schematic (OrCAD Capture or Allegro Design Entry HDL)?  And, what version of the tools are you using?  So, you are adding a zero pin part in the schematic?  And, you want that part to be included into the netlist for Allegro?

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  • mvonahnen
    mvonahnen over 16 years ago

    I am using Allegro Design Entry CIS. 

    The version is SPD 16.01.  

    I have created a schematic symbol that has no pins and only text to be added to the schematic.

    I have created a "Footprint" that contains text on the Top Etch layer and text and shapes on the Top Silkscreen layer.

    I would like to have the netlister load the footprint in the PCB when it is instantiated in the schematic, just like other components. 

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  • Khurana
    Khurana over 16 years ago

     Hmm...the only way I can think of is to use NC pins property to this bogus part - this is required for the part to be "placeable" in Allegro.  Otherwise, even if a mechanical part sucessfully made it into the netlist, then Allegro PCB Editor would not allow you to place it since the part is mechanical (i.e. has no pins).  The drawback by adding NC pin is that when you run drc then it will say that one is unconnected.

     

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