Parent page: Schematic Objects

Use No ERC markers to suppress error/warning messages about a specific node in the circuit.


The No ERC marker is placed on a node in the circuit to suppress all reported warning and/or error violation conditions that are detected when the schematic project is compiled. Use this to deliberately limit error checking at a certain point in the circuit that you know will generate a warning (such as an unconnected pin), while still performing a comprehensive check of the rest of the circuit.

The No ERC marker supports a number of different styles and can be displayed in any color. Use this ability to reflect the design intent for this point in the circuit.

Choose a No ERC style that best reflects its function at that point in the circuit.


No ERC markers are available for placement in the Schematic Editor only by clicking Home | Circuit Elements |  » Generic No ERC from the main menus.


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

  1. Position the cursor over a wire or other net object then click or press Enter to place a directive at that point in the circuit.
  2. Continue placing further No ERC markers or right-click or press Esc to exit placement mode.
  3. To rotate the No ERC marker while in placement mode, press the Spacebar to rotate counterclockwise in 90° increments or Shift+Spacebar to rotate clockwise in 90° increments.

Additional actions that can be performed during placement are:

  • Press the Tab key to access an associated properties dialog, from where properties for the No ERC marker can be changed on-the-fly.
While attributes can be modified during placement (Tab to bring up associated properties dialog), keep in mind that these will become the default settings for further placement.

Graphical Editing

The No ERC marker cannot be modified graphically, other than changing its location. To move a No ERC marker, click and hold while dragging it to a new location. While dragging, the No ERC marker can be rotated (Spacebar/Shift+Spacebar).

An object that has its Locked property enabled cannot be selected or graphically edited. Double-click on the locked object directly then 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: No ERC

This method of editing uses the No ERC dialog to modify the properties of a No ERC object.

The No ERC 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-click on the placed No ERC object.
  • Place the cursor over the No ERC object, right-click then choose Properties from the context menu.

Via the SCH Inspector Panel

Panel page: SCH Inspector

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

Controlling the Printing of No ERC Directives

By default, No ERC markers are included during printing. To control this - either disabling their inclusion entirely, or excluding only specific symbols - use the Schematic Print Properties dialog, as shown below.

Control the printing of No ERC markers in the Schematic Print Properties dialog.

This dialog can be accessed by clicking Outputs | Documentation |  and choosing one of the following commands from the associated drop-down menu:

  • Print Preview - from the Preview Schematic Prints dialog, right-click then choose Configuration.
  • Page Setup - from the initial Schematic Print Properties dialog, click the Advanced button.
  • Default Prints - from the Default Prints tab of the Options for Project dialog, select Schematic Prints in the list then click Configure.


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