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Cadsoft Eagle .brd to Gerber conversion guidelines



Eurocircuits preferred input format is still Gerber (RS-274X).Nowadays we also offer the possibility to upload Eagle CAD data (.BRD files) which we convert internally to Gerber before starting the normal flow.

 

Be advised that this conversion is automated and based on the Eagle layer names and functions.In case you have

designed the board while respecting the normal Eagle layers , the conversion should lead to a correct printed circuit

board. In case you have used layers for other functions then the ones prescribed in the Eagle manual, the conversion

 

could lead to a non-functional board.

 

Layer conversion rules - syntax:

Layer function (.file extension) consists of Eagle layer(s) : Eagle layer number & function + ….

Solder stop Component side (.STC) = 20 Dimension layer + 29 tStop laye

Silkscreen Component side (.PLC) = 20 Dimension layer + 21 tPlace layer + 25 tNames layer

Componentside (.CMP) = 1 Top layer + 17 Pads layer + 18 Vias layer + 20 Dimension layer

Inner layers (.Lox) = x Inner layer + 17 Pads layer + 18 Vias layer + 20 Dimension layer

Solderside (.SOL) = 16 Bot layer + 17 Pads layer + 18 Vias layer + 20 Dimension layer

Solder stop Solder side (.STS) = 30 bStop layer + 20 Dimension layer

Silkscreen Solder side (.PLS) = 22 bPlace layer + 26 bNames layer + 20 Dimension layer

Milling (.MILING) = 46 Milling layer + 47 Measures layer + 20 Dimension Layer

Excellon drill (.DRD) = 44 Drills layer + 45 Holes laye

Cream frame Componentside(.PMC) =31 tCream layer + 20 Dimension layer

Cream frame Solderside (.PMS) = 32 bCream layer + 20 Dimension layer

The conversion is fully automated because of this Eurocircuits cannot take any customer specific requests into consideration.

 

If the above rules don’t suit your needs,simply convert the .BRD project yourself into Gerber and supply the set of gerberfiles for further processing.

 

Generate Gerber and Excellon files in Eagle

Generating Gerber- en Excellon files in Eagle is easy. Simply follow these steps:

 

Open the CAM Processor

 

Select under File -> Open for Job

 

In the window that now opens you select the correct .cam-file, in this case gerb274x.cam (in the Eagle subdirectory cam).

For a 4-layer PCB select gerb274x-4layer.cam
The job opens itself in the CAM processor window. . In the right-hand panel the necessary items are already selected.

You do not need to do anything here.

Activate in every(!) layer the Dimension by clicking on it. This shows the outline of the PCB.

The tick box next to Mirror needs to be un-ticked each time.

 

The final step is carrying out the job. This is simply done by clicking the button Process Job

 

The CAM Processor places the Gerber files in the folder of your opened project.

There are quite a few files there (six for a two-layer board).

 

To create an Excellon filethat contains the information for drilling the holes, you select the excellon.cam file when opening the .cam-file (steps 2 and 3).

You then click process job and the Excellon file will be generated.

 

You now simply combine all these files into a single zip file and upload it via the Eurocircuits website.

 

if you want know more things,please go http://www.pcbgogo.com?code=y



Tags of Post: pcb design, pcb gerber file, gerber files, pcb files

Author: bean

Published on March 20, 2019

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