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Sup and Pwr pins genera ting ERC warnings

autodeskguest

I'm running Eagle 4.16 in Win7 x64.  I've created a number of parts and

assigned Pwr to their Vcc and GND pins.  In my schematic I name these VCC

and GND and then place +5V and GND symbols from the supply1 library and

name them VCC and GND (see attachment).  Nevertheless, when I run ERC I get

a warning like the following:

 

WARNING: Sheet 1/4: POWER Pin U$5 10_VCC connected to VCC

WARNING: Sheet 1/4: POWER Pin U$5 11_GND connected to GND

 

 

If I change the Pwr pins to Sup I get an overwritten warning instead, but

it's still a warning.  What am I doing wrong?

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  • On 28/09/16 19:59, Karl Lautman wrote:

    I'm running Eagle 4.16 in Win7 x64.  I've created a number of parts and

    assigned Pwr to their Vcc and GND pins.  In my schematic I name these VCC

    and GND and then place +5V and GND symbols from the supply1 library and

    name them VCC and GND (see attachment).  Nevertheless, when I run ERC I get

    a warning like the following:

     

    WARNING: Sheet 1/4: POWER Pin U$5 10_VCC connected to VCC

    WARNING: Sheet 1/4: POWER Pin U$5 11_GND connected to GND

     

     

    If I change the Pwr pins to Sup I get an overwritten warning instead, but

    it's still a warning.  What am I doing wrong?

     

    You've included the pad number in the pins' names. Why? Even if you

    don't care about the possibility that the device might come in different

    packages with different pin numbering (very common on devices that have

    pins called "PE6"), doing so is an unnecessary duplication. It also

    means your power pins are not called "VCC" and "GND" so you will get

    warnings about connecting them to a net with a different name.

     

    Fix your library parts (and while you're at it, assign an appropriate

    PREFIX to them) and you'll be able to lose those warnings.

     

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  • On 28/09/16 19:59, Karl Lautman wrote:

    I'm running Eagle 4.16 in Win7 x64.  I've created a number of parts and

    assigned Pwr to their Vcc and GND pins.  In my schematic I name these VCC

    and GND and then place +5V and GND symbols from the supply1 library and

    name them VCC and GND (see attachment).  Nevertheless, when I run ERC I get

    a warning like the following:

     

    WARNING: Sheet 1/4: POWER Pin U$5 10_VCC connected to VCC

    WARNING: Sheet 1/4: POWER Pin U$5 11_GND connected to GND

     

     

    If I change the Pwr pins to Sup I get an overwritten warning instead, but

    it's still a warning.  What am I doing wrong?

     

    You've included the pad number in the pins' names. Why? Even if you

    don't care about the possibility that the device might come in different

    packages with different pin numbering (very common on devices that have

    pins called "PE6"), doing so is an unnecessary duplication. It also

    means your power pins are not called "VCC" and "GND" so you will get

    warnings about connecting them to a net with a different name.

     

    Fix your library parts (and while you're at it, assign an appropriate

    PREFIX to them) and you'll be able to lose those warnings.

     

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