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OrCAD PCB Assembly Pads

Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=1180
Printed Date: 19 Nov 2024 at 1:21am


Topic: OrCAD PCB Assembly Pads
Posted By: lalexman
Subject: OrCAD PCB Assembly Pads
Date Posted: 19 Nov 2013 at 7:09am
Hi,
 
I noticed that when generating footprints for OrCAD PCB (Allegro) there are not pads on the assembly layers. 
 
Is there a reason for this?
 


Replies:
Posted By: chrisa_pcb
Date Posted: 19 Nov 2013 at 2:36pm
In FPX, you select how you want the Pads on Assembly to be displayed.
 
Example:
  1. First select Through Hole, Header/Vertical (OK), then Reference
  2. Now Select the Settings tab to the right of the Dimensions Tab that is currently being displayed
  3. There should be a selection Pads On Assembly. The default is None (which is what you're seeing. You can set this to either be an Outline which is a circle that encompasses the Pad, or Filled which provides a filled Pad.
  4. After selection (select say Outline), Select OK. Now Change the Layer for the part to Assembly Top and each pad should have an Outline around it. Then select say Filled and Select OK.. it should then be a Filled Outline (i.e. a pad).
 

Posted By: lalexman
Date Posted: 19 Nov 2013 at 2:47pm

What layers are they placed in OrCAD PCB ?

Posted By: chrisa_pcb
Date Posted: 19 Nov 2013 at 4:31pm
Should be PACKAGE GEOMETRY / ASSEMBLY_TOP and PACKAGE GEOMETRY / ASSEMBLY_BOTTOM in a class / subclass format.

Posted By: lalexman
Date Posted: 19 Nov 2013 at 4:58pm
Hi , I have the assembly top and bottom set to filled and verified they have a pad in the FPX viewer.
 
Attached are the FPX Orcad PCB files. It looks like those layers are not on the padstack in Orcad PCB  so they would have to be in the .SCR file ?. I do not see anything on the assembly top or bottom layer for the pads in the attached scr file.  Only the outline of the part and the pin 1 location.
 
http://www.pcblibraries.com/forum/uploads/545/fpx.zip" rel="nofollow - uploads/545/fpx.zip
 

Posted By: chrisa_pcb
Date Posted: 19 Nov 2013 at 5:30pm
Ok. That narrows the issue you're having a little better. So, in particular, filled assembly pads aren't coming in. Outlines are showing up properly, yes?

Posted By: lalexman
Date Posted: 19 Nov 2013 at 5:41pm
Nothing comes in on the pads for assembly top or bottom in filled mode. I just tried outline mode and pads do show up on assembly top and bottom.

Posted By: chrisa_pcb
Date Posted: 19 Nov 2013 at 6:23pm
Found the issue and Fixed. It'll be in the next update .17.

Posted By: lalexman
Date Posted: 20 Nov 2013 at 7:19am
Great!  Thanks!


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