EAGLE Help

SIGNAL

Function: Defines signals.
Syntax: SIGNAL * *..
SIGNAL signal_name * *..
SIGNAL signal_name element_name pad_name..;

See also AUTO, ROUTE, NAME, CLASS, WIRE, RATSNEST, EXPORT

The SIGNAL command is used to define signals (connections between the various packages). The user must define a minimum of two element_name/pad_name pairs, as otherwise no airwire can be generated.

Mouse Input

To do that you select (with the mouse) the pads (or smds) of the elements to be connected, step by step. EAGLE displays the part signals as airwires in the Unrouted layer.

If input with signal_name the signal will be allocated the specified name.

Text Input

Signals may also be defined completely by text input (via keyboard or script file). The command

SIGNAL GND IC1 7 IC2 7 IC3 7;

connects pad 7 of IC1...3. In order to enter a whole netlist, a script file may be generated, with the extension *.scr. This file should include all of the necessary SIGNAL commands in the format shown above.

On-line Check

If the SIGNAL command is used to connect pads (or smds) that already belong to different signals, a popup menu will appear and ask the user if he wants to connect the signals together, and which name the signal should get.

Outlines data

The special signal name _OUTLINES_ gives a signal certain properties that are used to generate outlines data. This name should not be used otherwise.

Index