> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of Bill 
> Moffitt (New Class Five, Inc.)
> Sent: Friday, November 05, 2004 8:26 PM
> To: [EMAIL PROTECTED]
> Subject: [PEDA] Pick & Place problem
> 
> I've got a design which has been built by the pcb shop.   
> We're taking it over to the assembly house for pick & place 
> soldering on the machine.   The components on the board all 
> have their center as pin 1.    The assembly house needs the 
> x/y data to have the center as the center of the part.    If 
> I change the part in the library and update the board with 
> the new component info, the part moves on the board.
> 
> Is there any way to move a part from a particular point, such 
> as from a pin, instead of the default way protel moves it 
> from the center?
> 
> Has any one created a script to solve this sort of problem?

Bill

I thought the first fields MidX MidY were always the centre values?

If you make a test footprint with 2 pads, set pin 1 as the ref point and place pad 2, 
2mm north of
it.

Place it on a blank PCB with pin one at location x 2mm, y 2mm from origin and pin 2 
facing north.

So we have pin one at x 2mm, y 2mm and the centre of the part should be x 2mm, y 3mm.

If I run a PP report on this test board I get this (might need to make your browser 
maximised to
read this formatted).

"Designator","Footprint","Mid X","Mid Y","Ref X","Ref Y","Pad X","Pad Y"
"P6","NSWE-PADS","2mm","3mm","2mm","2mm","2mm","2mm","T","360.00","Comment"

As you will see the MidX,MidY values, fields 3 & 4 are the correct values for the 
centre (pp point),
but fields 5 & 6 the RefX, RefY points are your pin one location.

So you should already have the information you need, I think ;-), I could always be 
wrong.

Hope it helps

John



 
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