Prefix set for Gerber file name does not appear in output file

When using the external 'artwork' command the parameters are read from the 'art_param.txt' file,
it looks like the filename_prefix settings are not written to that file...

You may want to try replacing the axlRunBatchDBProgram() call with a few more axlShell commands:
axlShell("FORM film_control film_control")
axlShell("FORM film_control select_all")
axlShell("FORM film_control create")
axlShell("setwindow form.film_control")
axlShell("FORM film_control ok")

Yeah David, currently looks like this is the only option. However I have contacted the cadence team as well, lets see if they have something else for this. Will update this note if there is any response from them.

Thanks,
Sanjeev

So here is the reply from cadence team
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1. The issue is not related to Skill command axlfcreate. This command creates a new film in the Artwork form.
2. The axlRunBatchDBProgram function calls the command in batch mode (It can be compared to running a command available to be executed in batch mode from Command prompt.
3. You are calling artwork Batch command using this function. The Artwork command is a stand alone batch command and it does not refer to the Artwork parameters set in Artwork form. The Arguments this batch command can use are:

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1) artwork <design>
- Output all Gerber films defined in the design.
2) artwork -l <design>
- List all Gerber films defined in design.
3) artwork [-s -p <-o outline_offset> <-a min_aperture>]
[-f <filmname1> -f <filmname2> -f...] <design>
- Output Gerber films based upon options defined below

[-f <filmname1> -f <filmname2> -f...]
Films to generate. Film must be defined in design are
are case insensitive. Multiple films may be specified
each with its out '-f' option
[-s]
Array outside of the shapes is not to be filled on a
negative film.
[-p]
Use vector pad-type behavior for raster artwork.
[-o <outline_offset>]
Applies to negative films. Adds another outline around
the design outline extending the shape boundary of
the filled area. This new artwork outline extends in
all directions beyond the design outline.
Default is "Shape bound box" obtained from the film record.
Value must be given in mils.
[-a <min_aperture>]
This option is NOT recommended.

For vector artwork, uses this as the minimum aperture.
Default is 3 mils. min_aperture is an integer number whose
units must be given in mils. Fractional numbers is not
supported and you must round the value to the nearest integer.

Normally we use the smallest aperature defined in the
or 3 mils whatever is larger. This allows you to set the
default smaller then 3 mils. Do NOT attempt to use this
to set a larger value then 3 mils.

[-l]
list films in design; one per line

<design> An Allegro .brd, .mcm or .sip file

Except for the -l option a art_param.txt must exist. If Gerber 4x or 6x are enabled, then a art_aper.txt must also exist.

Standard command line arguments:

[-help]
- This information
[-version]
- Program prints its version and exits
[-versionLong]
- Program prints its long version (if available) and exits

Legend:
[...] - optional argument
<...> - provide indicated data. Typically a filename.
| - provide one of these arguments. Example -j|-o
... - required argument
-$ - most Allegro programs accept this argument which means
do not prompt for missing command line arguments _______________________________________________________________________

If you look at the available arguments, it does not have any arguments to refer to Artwork parameters.

So if the prefix or suffix is required to be added, this batch command can't be used.

You will have to continue to use some more axlShell functions to create the artwork from the artwork form switches.

I hope this provides all the details you should be looking for.
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