Power Port

Parent page: Schematic Objects

A placed Power Port.

Summary

A power port is an electrical design primitive. It is a special schematic object used to define a power or ground net. Power ports allow the designer to conveniently indicate a power net at any location in the design, which can then be connected to pins or wires.

Availability

Power ports are available for placement in the Schematic Editor only, by clicking Home | Circuit Elements |  and choosing the required style of Power Port.

Placement

After launching the command, the cursor will change to a cross-hair and you will enter power port placement mode. A power port symbol will appear "floating" on the cursor.

  1. Position the object and click or press Enter to effect placement.
  2. Continue placing further power ports, or right-click or press Esc to exit placement mode.

Additional actions that can be performed during placement are:

  • Press the Tab key to access an associated properties dialog, from where properties for the power port can be changed on-the-fly.
  • Press the Alt key to constrain the direction of movement to the horizontal or vertical axis, depending on the initial direction of movement.
  • Press the Spacebar to rotate the power port anti-clockwise or Shift+Spacebar for clockwise rotation. Rotation is in steps of 90°.
  • Press the X or Y keys to mirror the power port along the X-axis or Y-axis respectively.

While attributes can be modified during placement (Tab to bring up associated properties dialog), bear in mind that these will become the default settings for further placement.

Graphical Editing

This method of editing allows the designer to select a placed power port object directly in the workspace and then change its location graphically. Power ports are fixed with respect to their size and shape. As such, editing handles are not available when the power port object is selected:

A selected Power Port.

  • Click anywhere inside the dashed box and drag to reposition the power port as required. While dragging, the power port can be rotated (Spacebar/Shift+Spacebar) or mirrored (X or Y keys to flip along the X-axis or Y-axis respectively).
  • The assigned net for a power port object can be edited in-place by:
    1. Single-clicking the power port to select it.
    2. Single-clicking again (or pressing the Enter key) to enter the in-place editing mode. Sufficient time between each click should be given to ensure the software does not interpret the two single-clicks as one double-click (which would open the power port's properties dialog).
    3. To finish editing in-place text, press the Enter key, or use the mouse to click away from the power port.

An object that has its Locked property enabled cannot be selected or graphically edited. Double click on the locked object directly and disable the Locked property, to graphically edit the object.

Non-Graphical Editing

The following methods of non-graphical editing are available:

Via an Associated Properties Dialog

Dialog page: Power Port

This method of editing uses the Power Port dialog to modify the properties of a power port object.

The Power Port dialog.

The dialog can be accessed during placement by pressing the Tab key.

After placement, the dialog can be accessed in one of the following ways:

  • Double-clicking on the placed power port object.
  • Placing the cursor over the power port object, right-clicking and choosing Properties from the context menu.

Power Port Styles

The following graphical styles of power port are available and can be set by editing the object's Style property:

Circle

Arrow

Bar

Wave

Power Ground

Signal Ground

Earth

Via the SCH Inspector Panel

Panel page: SCH Inspector

The SCH Inspector panel enables the designer to interrogate and edit the properties of one or more design objects in the active document.

Notes

  1. The graphical symbol selected for a power port does not determine which net it is assigned to. The net name must be explicitly set.

 

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