User Guide

If you want to change a package which you gave a new value with the
help of the VALUE command before, the value text of the new package
will drop to the original value although the device has been defined with
VALUE Off inthelibrary.Seealsopage 56.
REPLACEcommand
If you have a layout without an associated schematic diagram, you ex
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change the package with the aid of the REPLACE command.
REPLACE opens the window that is familiar from the ADD dialog, in
which it is possible to search for devices. When the package has been
chosenyouclickonthedevicethatistobereplacedinthelayout.
The REPLACE command operates in two ways, chosen with the SET
command:
SETREPLACE_SAMENAMES;(default)
SETREPLACE_SAMECOORDS;
The first mode permits packages whose pad or SMD names are identical
tobeexchanged.Theconnectingareascanhaveanyposition.
In the second case (replace_same coords) the pads or SMDs in the new
package must be located at the same coordinates (relative to the origin).
Thenamesmaydiffer.
The text for the name and value of a device is only exchanged if they
havenotbeenseparatedfromthedevicewithSMASH.
The new package can come from a different library, and can contain ad
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ditional pads and SMDs. Connections on the old package that were con
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nected to signals must exist correspondingly in the new package. The
new package can even have fewer connections, provided that this condi
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tionissatisfied.
Changingthe Technology
It is possible to change the technology of a device in the layout at any
time. Use the CHANGE command with the Technology option. This
procedure is identical to the one described before in which package
formsareexchangedusingCHANGE.
Define ForbiddenAreas
Areas in the form of rectangles, polygons or circles in layers 41, tRe
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strict, 42, bRestrict, and 43, vRestrict, are forbidden for the Autorouter
(see RECT, POLYGON, CIRCLE). No tracks may be drawn in the top
or bottom layers inside these areas. Through-plated holes may not be
locatedinavRestrictregion.TheseregionsareexaminedbytheDRC.
103
FromSchematictoFinishedBoard