Artwork created with warnings - What are they?

Tom - I'd be suprised because if the parameter file (art_param.txt) isn;t found it writes a new one to the local job directory. Have you got any zero line widths? have you set the undefined line width per artwork film ? Do the output units = job units ? Are you sure you want to use 6X00 gerber rather than 274X ? Does the shape format = artwork format ?

There is one zero width line on the top silk, but this board is to dense for the top silk so it will not be used. If this is causing the warnings, then why does it show as a warning on every layer.

I will change to 274x.

The first time I ran it, I had no warnings. I then went and added the pcb part number to the bottom silk and that is when the warnings started.

I spent 20 hours on this job over the weekend, so by last night I was fried and didn't want to investigate too much. I was running the gerbers as a test, the board is going into review today so I have some time to sort it out. As usual, I'm sure it is something I'm doing incorrectly.........

Tom

Tom  suggest you always use RS274X when creating the gerbers. RS274X embeds all the info need into one file so as to do a photoplot. Pretty much all board-houses support RS274X.

Also when you are setting up your gerber output, there is a field to define "Undefined Line width" for each film layer you want to output. By default this field is set to Zero and that should be fine most of the time, but as a safe-guard I typically make that field a "1"

Normally Allegro is pretty darn good at scanning the design and generating dcodes for the shapes pads, lines etc using RS274X format, think if you use that format life will be easier for you.

Scott

ScottCad said:

Tom  suggest you always use RS274X when creating the gerbers. RS274X embeds all the info need into one file so as to do a photoplot. Pretty much all board-houses support RS274X.

Also when you are setting up your gerber output, there is a field to define "Undefined Line width" for each film layer you want to output. By default this field is set to Zero and that should be fine most of the time, but as a safe-guard I typically make that field a "1"

Normally Allegro is pretty darn good at scanning the design and generating dcodes for the shapes pads, lines etc using RS274X format, think if you use that format life will be easier for you.

Scott

Hi Scott,

I always use 274x, in fact, I don't know why this one reported the other format because when I went back into the file, the default setting was 274x.

For undefined line widths, I make the setting 8 for each layer.

Something strange was happening when I was making those gerbers. Yesterday, I had a few small edits to do resulting from the design review. I made the changes then generated the gerbers using the same method I did on Sunday. This time I had no warnings or errors. I didn't change a thing other then add and route a few new capacitors.

I have noticed another oddity. I need to document the steps to verify I can dupplicate it before submitting to tech. Let's say I'm in etch edit mode and routing. I then go and save the file (which I do fairly often). I then select F3 to continue routing, but I can not manually route anymore. I select etch edit, then add route and still can't route. I select placement edit, then etch edit, then add route and it is now working. It seems like after a save, I have to select a different mode then go back to the original mode and continue work. Again, I need to validate this, but I've seen it happen more then once.

Tom