Parent page: Schematic Objects
A port is an electrical design primitive. It is used to make an electrical connection between one schematic sheet and another sheet, or sheet symbol (through a corresponding sheet entry) in a design using multiple sheets (both flat and hierarchical designs). The name of the port defines the connection (i.e., a port on a schematic sheet connects to ports or sheet entries with the same name on other sheets in the project).
Ports are available for placement in the Schematic Editor by clicking Place » Port from the main menus.
Sheet entries are also available by right-clicking in the schematic editor, then click Place » Port.
After launching the command, the cursor will change to a cross-hair and you will enter port placement mode. Placement is made by performing the following sequence of actions:
Additional actions that can be performed during placement while the port is still floating on the cursor and before its left-hand edge is anchored are:
This method of editing allows you to select a placed port object in the workspace and graphically change its length, height, or location.
When a port object is selected, you can click and drag the editing handles to resize the port.
Click anywhere on the port away from editing handles and drag to reposition it. While dragging, the port can be rotated (Spacebar/Shift+Spacebar) or mirrored (X or Y keys to mirror along the X-axis or Y-axis).
The name for the port object can be edited in-place by:
The following methods of non-graphical editing are available:
Dialog page: Port Properties
This method of editing uses the Port Properties dialog to modify the properties of a port object.
The Port Properties dialog can be accessed prior to entering placement mode from the Schematic – Default Primitives page of the Preferences dialog. This allows the default properties for the port object to be changed, which will be applied when placing subsequent ports.
During placement, the dialog can be accessed by pressing the Tab key.
After placement, the dialog can be accessed in one of the following ways:
An Inspector panel enables the designer to interrogate and edit the properties of one or more design objects in the active document. Used in conjunction with appropriate filtering - by using the applicable Filter panel, or the Find Similar Objects dialog - the panel can be used to make changes to multiple objects of the same kind, from one convenient location.
A List panel allows the designer to display design objects from one or more documents in tabular format, enabling quick inspection and modification of object attributes. Used in conjunction with appropriate filtering - by using the applicable Filter panel, or the Find Similar Objects dialog - it enables the display of just those objects falling under the scope of the active filter – allowing the designer to target and edit multiple design objects with greater accuracy and efficiency.
Right-click over a placed port to pop-up a context-sensitive menu, from which the following commands are available (on the Port Actions sub-menu) that act on that port (or all currently selected ports, where applicable):
The actual change depends on the current I/O Type as follows:
Doing things manually typically means having to expend additional effort. Of course, this gives you full control, but if an automated process can be put in place that is both fast and effective, its use can be of great benefit. With the port object, automation of port size can certainly have a positive impact on productivity.
To take advantage of the autosizing feature, enable the port's Autosize option. This can be done in either the Port Properties dialog or the SCH Inspector panel.
Even if you change font size, the autosizing feature has got you covered. The height of the port will simply be resized to accommodate the text accordingly.
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