Protel 99SE

[Graham Taitt]

I'm drawing up a power circuit, the footprints and all the rest are
all ok however when i update the PCB there are errors generated around
the diodes saying: ERROR: Node not found. When i take the diodes out
the circuit updates without error. All the foorprints libraries are
available to the PCB. Any help would be great, Thanks
Graham Taitt

 

[Michael Bohlender]

Hello Graham,

grahamtaitt@gmail.com (Graham Taitt) wrote in
news:69718c4f.0412221440.2f20fca0@posting.google.com:

I'm drawing up a power circuit, the footprints and all the rest are
all ok however when i update the PCB there are errors generated around
the diodes saying: ERROR: Node not found. When i take the diodes out
the circuit updates without error. All the foorprints libraries are
available to the PCB. Any help would be great, Thanks
Graham Taitt

take care that you use the "Pin Number" from the schematic symbol
as the reference to create the pad designators in the footprint!

Although the name is listed above the number of the pin, it is
ONLY the number that Protel uses to link schematic symbols and
footprints.
There is NO WAY tho change this behaviour.

 

[Peter Bennett]

On 22 Dec 2004 14:40:07 -0800, grahamtaitt@gmail.com (Graham Taitt)
wrote:

I'm drawing up a power circuit, the footprints and all the rest are
all ok however when i update the PCB there are errors generated around
the diodes saying: ERROR: Node not found. When i take the diodes out
the circuit updates without error. All the foorprints libraries are
available to the PCB. Any help would be great, Thanks
Graham Taitt

Check that the pin numbers on the schematic symbol and the PCB
footprint agree. You will likely find that the schematic pins are A
and K while the PCB pins are 1 and 2 (or something like that) - edit
the schematic symbol or the footprint (or both) to make the pin
numbers match.

It appears that Protel's schematic library creators and their PCB
counterparts weren't permitted to collaborate - there are many such
discrepancies in the libraries.

Also - check hole sizes on the PCB. On many footprints, the holes are
too small for my liking (and sometimes too small for the intended part
- particularly the .025 square post headers).

--
Peter Bennett VE7CEI
email: peterbb4 (at) interchange.ubc.ca
GPS and NMEA info and programs: http://vancouver-webpages.com/peter/index.html
Newsgroup new user info: http://vancouver-webpages.com/nnq

 

[Clarence]

"Peter Bennett" <peterbb@nowhere.invalid> wrote in message
news:urujs01qdpil78imipv2721jdgi9a4lbnr@4ax.com...

On 22 Dec 2004 14:40:07 -0800, grahamtaitt@gmail.com (Graham Taitt)
wrote:

I'm drawing up a power circuit, the footprints and all the rest are
all ok however when i update the PCB there are errors generated around
the diodes saying: ERROR: Node not found. When i take the diodes out
the circuit updates without error. All the foorprints libraries are
available to the PCB. Any help would be great, Thanks
Graham Taitt

Check that the pin numbers on the schematic symbol and the PCB
footprint agree. You will likely find that the schematic pins are A
and K while the PCB pins are 1 and 2 (or something like that) - edit
the schematic symbol or the footprint (or both) to make the pin
numbers match.

It appears that Protel's schematic library creators and their PCB
counterparts weren't permitted to collaborate - there are many such
discrepancies in the libraries.

Also - check hole sizes on the PCB. On many footprints, the holes are
too small for my liking (and sometimes too small for the intended part
- particularly the .025 square post headers).

On the diodes the foot prints are numbered 'A' and 'C' on the schematic they
are 1 & 2 so you will need to change them.

 

[ĺnřn˙mřu§]

On 23 Dec 2004 17:19:14 GMT, Michael Bohlender <mboh.noslender@online.de> wrote:

Hello Graham,

grahamtaitt@gmail.com (Graham Taitt) wrote in
news:69718c4f.0412221440.2f20fca0@posting.google.com:

I'm drawing up a power circuit, the footprints and all the rest are
all ok however when i update the PCB there are errors generated around
the diodes saying: ERROR: Node not found. When i take the diodes out
the circuit updates without error. All the foorprints libraries are
available to the PCB. Any help would be great, Thanks
Graham Taitt

take care that you use the "Pin Number" from the schematic symbol
as the reference to create the pad designators in the footprint!

Although the name is listed above the number of the pin, it is
ONLY the number that Protel uses to link schematic symbols and
footprints.
There is NO WAY tho change this behaviour.
I have also seen where someone had the lead (or pins) backwards.

It looks "ok" on the schmatic because the display pin and name are turned off.
But, its not hooked up to anything....