gerber question

S

sycochkn

Guest
In a Gerber file if there are no parameter codes RS274D is a block delimiter
required before the first function code? In a Gerber file that contains
parameter codes if function codes appear before the first parameter code eg.
G04, is a block delimiter required before the first one. I also have a
problem with the difinition of the Moire aperture macro, it seems
incomplete. Ref . rs274xrevd_e.pdf.

Bob
 
On Feb 22, 4:22 am, "sycochkn" <sycoc...@earthlink.net> wrote:
In a Gerber file if there are no parameter codes RS274D is a block delimiter
required before the first function code? In a Gerber file that contains
parameter codes if function codes appear before the first parameter code eg.
G04, is a block delimiter required before the first one. I also have a
problem with the difinition of the Moire aperture macro, it seems
incomplete. Ref . rs274xrevd_e.pdf.

Bob
Click to expand...
Why not download a demo version of someones PCBCAD software and make
it output Gerber information ?
Thats how I wrote mine !
 
"Marra" <cresswellavenue@talktalk.net> wrote in message
news:54679f88-7b1f-411e-9ffc-44615a8c4643@b29g2000hsa.googlegroups.com...
On Feb 22, 4:22 am, "sycochkn" <sycoc...@earthlink.net> wrote:
In a Gerber file if there are no parameter codes RS274D is a block
delimiter
required before the first function code? In a Gerber file that contains
parameter codes if function codes appear before the first parameter code
eg.
G04, is a block delimiter required before the first one. I also have a
problem with the difinition of the Moire aperture macro, it seems
incomplete. Ref . rs274xrevd_e.pdf.

Bob
Click to expand...
Why not download a demo version of someones PCBCAD software and make
it output Gerber information ?
Thats how I wrote mine !

Does it accurately define macro models as a drawing object? The Gerber
information is not the problem. Actually I would have to see how the
photoplot looks on a machine that uses RS274X. Actually I am going the
other way from Gerber to DXF I am trying for an accurate 3d solid model of
the pcb.

Bob
 
"Marra" <cresswellavenue@talktalk.net> wrote in message
news:54679f88-7b1f-411e-9ffc-44615a8c4643@b29g2000hsa.googlegroups.com...
On Feb 22, 4:22 am, "sycochkn" <sycoc...@earthlink.net> wrote:
In a Gerber file if there are no parameter codes RS274D is a block
delimiter
required before the first function code? In a Gerber file that contains
parameter codes if function codes appear before the first parameter code
eg.
G04, is a block delimiter required before the first one. I also have a
problem with the difinition of the Moire aperture macro, it seems
incomplete. Ref . rs274xrevd_e.pdf.

Bob
Click to expand...
Why not download a demo version of someones PCBCAD software and make
it output Gerber information ?
Thats how I wrote mine !

Now I am at the point where I can parse the parameter codes. I ran a gerber
file generated by p-cad It has a parameter code that is not listed in my
gerber spec. The code is IC is that something specific to a particular photo
plotter or just p-cad?

Bob
 
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