Altium Designer Documentation


Created: January 26, 2023 | Updated: January 26, 2023
Applies to Altium Designer version: 21

Parent page: Schematic Commands

The following pre-packaged resource, derived from this base command, is available:

Applied Parameters: None


This command is used to place a default Parameter Set object onto the active document. A Parameter Set is a design directive. It is essentially a container for one or more parameters, which can be associated to a net object within a schematic design.

For detailed information about this object type, see Parameter Set.


This command can be accessed from the Schematic Editor by:

  • Choosing the Place » Directives » Parameter Set command from the main menus.
  • Locating and using the Parameter Set command () on the Active Bar.
If the command has been recently used from the Active Bar, it will become the active/visible button. Where other commands are available, this is indicated by a triangle at the bottom-right corner of the button. Click and hold on the active button to access a menu of all associated commands for that grouping.
  • Right-clicking in the main design workspace and choosing the Place » Directives » Parameter Set command from the context menu.


After launching the command, the cursor will change to a cross-hair and you will enter design directive placement mode.

  1. Position the cursor over a wire or other net object and click, or press Enter, to effect placement.
  2. Continue placing further directives or right-click, or press Esc, to exit placement mode.

Additional actions that can be performed during placement – while the parameter set is still floating on the cursor – are:

  • Press the Tab key to access the Properties panel, from where properties for the parameter set can be changed on-the-fly.
Pressing Tab pauses placement, allowing you to interact with the panel (or other area of the software) directly. To resume, click the pause symbol that appears over the workspace.
  • 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 parameter set counterclockwise or Shift+Spacebar for clockwise rotation. Rotation is in steps of 90°.


  1. A default Parameter Set directive is devoid of parameters. Once placed, add the relevant parameter(s) to it through the Rules section of the Properties panel.
  2. To use a default parameter set directive as a net class directive, the ClassName parameter must be defined. This is performed on the Properties panel, using the Class Name field in the Classes region. Edit this field's value to define the name for the net class.
  3. While attributes can be modified during placement (Tab to bring up the Properties panel), bear in mind that these will become the default settings for further placement unless the Permanent option on the Schematic - Defaults page of the Preferences dialog is enabled. When this option is enabled, changes made will affect only the object being placed and subsequent objects placed during the same placement session.


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