Mentor Graphics PADS Layout - Split/Mixed Plane - pad does not connect to plane

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ogulcan123

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Hi all,

I'm using Mentor Graphics PADS VX.1.2 for PCB design in Windows 7 Pro OS.

I have a pad-plane connection issue. Some pads (not all) does not connect as if they are different nets although they are the same net.

Here is a problematic plane with its properties shown:


When I do plane connect using Pour Manager:


I get following errors(don't know how relevant):


Here is shown only the top layer (using "z1" modeless command):


Here is the cam plane preview where the problem is better seen:



Here is my Split/Mixed Plane options:


Note: In all pictures, green is the explanation edits.

How can I fix this issue?

Any suggestions are welcomed.
 
Last edited:

If you'll notice you've got DRC errors (those little green 'x's) in the upper left corner of your pour. There's something amiss in that area.
 

barry said:
If you'll notice you've got DRC errors (those little green 'x's) in the upper left corner of your pour. There's something amiss in that area.
Click to expand...

Hi,

I put those little green x's myself as I mention that all green anything is my own edit. That area has to be merged, there should be no gap.

I'll try to do some ECO to PCB, import export etc; and in the meantime, any suggestions are welcomed.
 

senilicus said:
Check your thermal tie settings, Any overrides there?
Click to expand...

Hi,

Thanks for the tip. I spent some time with the thermal settings, I also check the decals thermal settings and this actually help me with some other issues.

However, I solved the problem.. :grin:

What actually solved my issue is that the plane area has to cover the center of the pad.

For those who will face the same problem, refer to below picture for solution:
 

ogulcan123 said:
What actually solved my issue is that the plane area has to cover the center of the pad.
Click to expand...

I'm not sure how close Pads is to Expedition, but in Expedition there is a setting that controls this. If you have something called "Plane Classes and Parameters", open it. Change your class to the class that the plane is using and then go to the "Clearances/Discard/Negative" tab. Uncheck the "For buried connections, do not connect when pad origin is outside of the plane shape." After doing that, you will get a connection as long as the plane makes contact with the pad. Hopefully, Pads has the same function
 

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