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<html>
<head>
<title>EAGLE Help: ROUTE</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>ROUTE</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Converts unrouted connections into routed wires (tracks).
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>ROUTE [width] * [curve | @radius] *..</tt>
<p>
<dt>
<b>Mouse</b>
<dd>
Center button changes the layer.<br>
Right button changes the wire bend (see <a href=86.htm>SET Wire_Bend</a>).
<p>
<dt>
<b>Keyboard</b>
<dd>
<tt>Shift</tt> when switching bend styles reverses the direction.<br>
<tt>Shift</tt> at the end point places a Via.<br>
<tt>Ctrl</tt> starts routing at any given point along a wire.<br>
<tt>Ctrl</tt> toggles between corresponding bend styles.<br>
<tt>Ctrl</tt> when placing a wire end point defines arc radius.
<p>
</dl>
<b>See also</b> <a href=29.htm>AUTO</a>,
<a href=94.htm>UNDO</a>,
<a href=100.htm>WIRE</a>,
<a href=60.htm>MITER</a>,
<a href=88.htm>SIGNAL</a>,
<a href=86.htm>SET</a>,
<a href=75.htm>RATSNEST</a>
<p>
The ROUTE command activates the manual router which allows you to
convert airwires (unrouted connections) into real wires.
<p>
The first point selects an unrouted connection (a wire
in the Unrouted layer) and replaces one end of it by a wire (track).
The end which is closer to the mouse cursor will be taken. Now the
wire can be moved around (see also <a href=100.htm>WIRE</a>).
The right mouse button will change the wire bend and the center mouse
button will change the layer.
Please note that only those signal layers (1 through 16) are available
that have been entered into the layer setup in the <a href=127.htm>Design Rules</a>.
<p>
When the final position of the wire
is reached, a further click of the left mouse button will place the
wire and a new wire segment will be attached to the cursor.
If the <tt>Shift</tt> key is held down in such a situation, a Via will
be generated at that point if this is possible and the airwire hasn't already
been completely routed. The generated Via will have either the appropriate
length or, if such a length can't be determined, will go from layer 1 through 16.
<p>
When the layer has been changed and a via-hole is thus necessary,
it will be added automatically as the wire is placed. When the complete
connection has been routed a 'beep' will be given and the next unrouted
connection can be selected for routing.
<p>
Only the minimum necessary vias will be set (according to the layer setup in the
<a href=127.htm>Design Rules</a>). It may happen that an already existing via of the same signal is
extended accordingly, or that existing vias are combined to form a longer via if
that's necessary to allow the desired layer change.
If a via is placed at the start or end point, and there is an SMD pad
at that location, the via will be a <i>micro via</i> if the current routing
layer is one layer away from the SMD's layer (this applies only if micro vias
have been enabled in the <a href=127.htm>Design Rules</a>).
<p>
While the ROUTE command is active the wire width can be entered
from the keyboard.
<p>
If the <i>curve</i> or <i>@radius</i> parameter is given, an arc can be drawn as part of the track
(see the detailed description in the <a href=100.htm>WIRE</a> command).
<p>
If the <tt>Ctrl</tt> key is pressed while selecting the starting point and there
is no airwire at that point, a new airwire will be created automatically. The starting
point of that airwire will be that point on the selected wire that is closest to
the mouse cursor (possibly snapped to the nearest grid point). The far end of the
airwire will dynamically point to a target segment that is different from the
selected one. If the selected signal is already completely routed, the far end will
point to the starting point instead.
<p>
<b>Selecting the routing layer</b>
<p>
When you select an airwire, the initial layer in which to route is
determined by considering the objects at the starting point as follows:
<ul>
<li>if there is an object in the current layer, the current layer is kept
<li>else one of the layers of the objects at that point will be taken
</ul>
<p>
<b>Snap Function</b>
<p>
If an airwire is routed very close to the end point the last wire
is placed automatically. The minimum distance for this snap function
can be defined with the command
<pre>
SET SNAP_LENGTH distance;
</pre>
where "distance" is the snap radius in the current grid unit.
If "number" is 0 the snap function is disabled.
<p>
<b>Wire Angle</b>
<p>
If you route airwires connected to pads which are not positioned at
a grid point, this might not be possible with 45-degree angles. In
this case the command
<pre>
SET SNAP_BENDED OFF;
</pre>
can be executed so that this pad can be connected, even if the parameter
Wire_Bend is set to 1 or 3.
<hr>
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