How we can convert PCB file to schematic file on Protel DXP

Usman, There is no automatic manner to get there. You would have to manually compile the schematic from reverse engineering the PCB design yourself, then check the schematic for accuracy/correctness against the PCB until you got it right. I would have to believe you are looking for a shortcut but you don't understand the process even by which the PCB was originally designed. There are no shortcuts, only managers and engineers that don't understand the process think that CAD design is simply punching the right buttons.

Brad, Thanks for your reply, BUT Actually by mistake ,i delete my design which i made on schematic, but i have its PCB and PCB's layout. Now i dnt remeber the acutal values of resistors and capacitors and their interconection with other components, Thats why i asked for the method to get back my schematic from my layout.

I knew that doing reverse engineering ,i can get that interconnections but still i wouldnot be able to have the values of resistors and capacitors . So if u know any advance method for this please tell me,

With regards. Usman

I use Orcad PCB386+ and I can query the part ad get its value. Maybe your program can do the same.

Regards,

Boris Mohar

Got Knock? - see: Viatrack Printed Circuit Designs (among other things)

void _-void-_ in the obvious place

I've used Protel 99SE, not DXP. In 99SE, I think there may be a way to produce a bill of materials that would include the component value (but I've never used it...). If not, you can examine each component on the PCB and look at its "comment".

Did you not print the schematic before designing the board? You should also be able to find backup schematic files somewhere.

Okay Usman, Your task is not quite so daunting then. Yes as Peter mentioned, you can probably get your values from the comment field of the parts within the PCB. That is the usual location for the values to end up in if you used the Part type field in the original schematic. You could also use the output tools to generate a BOM from the PCB and include any information that was passed through to the PCB parts through parameters or any other means.

Then of course you will also need all of the original symbols, should be simple as long as you had a library that wasn't deleted. Then the interconnects more or less manually, then check the schematic against the PCB until you get no changes being performed as an ECO between the schematic and the PCB.

Your earlier comments sounded like the rookie or someone expecting a single push button solution, hope you didn't take my comments too harshly.

-- S>

The .sch will be in your backup folder as - 0ch,1ch,2ch ( it is on protel client).Just rename one of them to .sch and import it into DXP

Can't you export the netlist of the PCB from the Layout tool into an ASCII format? The tools I'm familiar with can. Perhaps as part of the ECO process. That would give you the values of the components as well as the connections. Given that it's a lot easier to rebuild the Schematic.

Robert