The DELETE command is used to delete the object selected by the mouse.
Clicking the right mouse button deletes a previously defined GROUP.
After deleting a group it is possible that airwires which have been newly created due to the removal of a component may be "left over", because they have not been part of the original group. In such a case you should re-calculate the airwires with the RATSNEST command.
With active Forward&Back Annotation, no wires or vias can be deleted from a signal that is connected to components in a board. Also, no components can be deleted that have signals connected to them. Modifications like these have to be done in the schematic.
Use the RIPUP command to convert an already routed connection back into an airwire.
The DELETE command has no effect on layers that are not visible (refer to DISPLAY).
The DRC might generate error polygons which can only be deleted with DRC CLEAR.
Deleting Wire Joints
If the DELETE command, with the Ctrl key pressed, is applied to the joining point of two wires, these wires are combined to form one straight wire. For this to work the two wires must be in the same layer and have the same width and line style, and must both have round endings (in case of arcs).
Deleting Polygon Corners
The DELETE command deletes one corner at a time from a polygon. The whole polygon is deleted if there are only three corners left.
Components can be deleted only if the tOrigins layer (or bOrigins with mirrored components) is visible and if (with active Forward&Back Annotation) no signals are connected to the component (see also REPLACE). Please note that an element may appear to be not connected (no airwires or wires leading to any of it's pads), while in fact it is connected to a supply voltage through an implicit power pin. In such a case you can only delete the corresponding part in the schematic.
Deleting Junctions, Nets, and Buses
The following rules apply:
If the last supply symbol of a given type is deleted from a net segment that has the same name as the deleted supply pin, that segment is given a newly generated name (if there are no other supply symbols still attached to that segment) or the name of one of the remaining supply symbols.
If you select wires (tracks) or vias belonging to a signal with the DELETE command three cases have to be considered:
Deleting higher level objects
If the Shift key is pressed when clicking on an object, the object that is hierarchically above the selected one will be deleted. This applies to the following objects:
|Gate||Deletes the entire part containing this gate (even if the gates are spread over several sheets). If f/b annotation is active, the wires connected to the element in the board will not be ripped up (as opposed to deleting a single gate), except for those cases where a pin of the deleted part is only connected directly to one single other pin and no net wire|
|Polygon Wire||Deletes the entire polygon|
|Net/Bus Wire||Deletes the entire net or bus segment|
Deleting all Signals
DELETE SIGNALS can be used to delete all signals on a board. This is useful if you want to read a new or changed netlist (see EXPORT). Only those signals are deleted which are connected to pads.
Don't forget: Deleting can be reversed by the UNDO command!
|Index||Copyright © 2005 CadSoft Computer GmbH|