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 Orcad capture-conectivity error 

Last post Mon, Sep 8 2008 1:53 PM by redwire. 3 replies.
Started by harish1 08 Sep 2008 03:01 AM. Topic has 3 replies.
Page 1 of 1 (4 items)
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  • Mon, Sep 8 2008 3:01 AM

    • harish1
    • Top 500 Contributor
    • Joined on Thu, Jul 17 2008
    • bangalore, Karnataka
    • Posts 2
    • Points 40
    Orcad capture-conectivity error Reply

    Hello,

    In Orcad Capture, a connection error was existing in my schematic. A +5V port was not connected to the resisor pin through any wire. But I couldn't find that error by running the DRC. I find that only in my manual check. In DRC setting, I enabled all the required fields. Then Why it is marking the error? Is it because its a global net? Please help.error.jpgerror.JPG

    Thanks,

    Harish
    • Post Points: 20

  • Mon, Sep 8 2008 5:09 AM

    • oldmouldy
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Woking, Surrey
    • Posts 201
    • Points 3,670
    Re: Orcad capture-conectivity error Reply

    The DRC follows the settings for the ERC Matrix, using the Default settings, unconnected pins are flagged as Warnings only for Input pins and Input Ports.

    Open the DRC, Tools>Design Rules Check, select the ERC Matrix tab, left-click on the boxes in the the "Unconnected" row to toggle round the Warning or Error, as required, then run the DRC.

    The ERC Matrix settings are stored in the Capture.ini so they will normally be installation specific.
    • Post Points: 20

  • Mon, Sep 8 2008 5:54 AM

    • harish1
    • Top 500 Contributor
    • Joined on Thu, Jul 17 2008
    • bangalore, Karnataka
    • Posts 2
    • Points 40
    Re: Orcad capture-conectivity error Reply

    Hi,

    Thanks for the reply. But even then I couldn't catch that error in DRC.

    I tried this.

    Tools-----Create Netlist-----Other-----rinf formatters------Flag Single pin nets

    Here, in this report I could able to find that error.

    Thanks,

    Harish

     
    • Post Points: 20

  • Mon, Sep 8 2008 1:53 PM

    • redwire
    • Top 10 Contributor
    • Joined on Wed, Jul 16 2008
    • Allen, TX
    • Posts 238
    • Points 3,445
    Re: Orcad capture-conectivity error Reply

    I think I see what you are talking about.  If your pin is coded as "power" then it auto-connects to the net name given by the pin name.  And, yes, it becomes a defacto global meaning it is allowed to be 'unconnected'.   Very powerful when you want that feature -- somewhat of an issue if you don't.

     One thing you can do is code your parts to not use POWER as the pin type and then the DRC will check as you expect.

    • Post Points: 5
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Started by harish1 at 08 Sep 2008 03:01 AM. Topic has 3 replies.