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Multiple power supply nets

autodeskguest

Hello,

 

my board has several power supply nets. I want to use only one symbol

for Vdd and GND (because has no sense to use 5-6 different symbols) with

explicit lables.

 

Something like this:

 

Vcc_main

GND_main

 

Vcc_analog

GND_analog

 

Vcc_RS485

GND_RS485

 

and so on...

 

I place the power supply symbol on the schematic, connected to the net,

and then I rename that net to its own (see above).

 

Checking with the 'show' command I'm sure the nets don't mix up.

 

Anyway, the ERC screams:

 

WARNING: Sheet 1/5: SUPPLY Pin +5V overwritten with +5V_485

ERROR: Sheet 1/5: SUPPLY Pin +5V overwritten with more than one signal

(+5V, +5V_485)

 

 

Hence I ask you: what's the right way to use different power supply nets

- using only one symbol?

 

Thanks

Marco / iw2nzm

 

Parents

  • Richard Hammerl ha scritto:

     

    Howto define a supply symbol:

     

     Create a new Symbol in the library

     Place the pin, with direction Supply

     Pin name corresponds to the signal name

     Set Value placeholder

     

     Create a new Device

     Device name is signal name

     Package assignment not necessary

     

     

    Ok, so you confirm I need a different symbol in library for each supply

    I want to use.

     

    It's a bit nasty: usually the names of multiple supply nets reflect the

    actual signals on the board. One time I have a VCC_RS485, another time

    say VCC_ANALOG, again maybe VCC_RELAYS...

    Each time I need a different supply name I must add a symbol in my

    library... after some time I'll have plenty of supply symbols most of

    them used only one time.

     

    (LOL, in this sentences I used too many times the word 'time' image ).

     

     

    Anyway, I'll follow this way.

    Thanks for your answer!

     

    Marco / iw2nzm

     

Reply

  • Richard Hammerl ha scritto:

     

    Howto define a supply symbol:

     

     Create a new Symbol in the library

     Place the pin, with direction Supply

     Pin name corresponds to the signal name

     Set Value placeholder

     

     Create a new Device

     Device name is signal name

     Package assignment not necessary

     

     

    Ok, so you confirm I need a different symbol in library for each supply

    I want to use.

     

    It's a bit nasty: usually the names of multiple supply nets reflect the

    actual signals on the board. One time I have a VCC_RS485, another time

    say VCC_ANALOG, again maybe VCC_RELAYS...

    Each time I need a different supply name I must add a symbol in my

    library... after some time I'll have plenty of supply symbols most of

    them used only one time.

     

    (LOL, in this sentences I used too many times the word 'time' image ).

     

     

    Anyway, I'll follow this way.

    Thanks for your answer!

     

    Marco / iw2nzm

     

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