Altium Designer Documentation

PlaceNoERC

Created: October 17, 2019 | Updated: October 17, 2019

Parent page: Schematic Commands

The following pre-packaged resources, derived from this base command, are available:


Applied Parameters: SuppressAll=True|Repeat=True

Summary

This command is used to place a Generic (or non-specific) No ERC object onto the current document. The No ERC object is a design directive that can operate in two modes. In this generic mode, the directive is placed on a node in the circuit to suppress all reported Electrical Rule Check warnings and/or error violation conditions that are detected when the schematic project is compiled. Use this directive 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.

For detailed information about this object type, see No ERC.

Access

This command can be accessed from the Schematic Editor by:

  • Choosing the Place » Directives » Generic No ERC command from the main menus.
  • Locating and using the Generic No ERC 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.
  • Clicking the  button on the Wiring toolbar.
  • Right-clicking in the workspace and choosing the Place » Directives » Generic No ERC command from the context menu.

Use

After launching the command, the cursor will change to a cross-hair and you will enter placement mode. The graphic for the No ERC object will appear floating on the cursor. Simply position the cursor over a wire or other net object, and click, or press Enter, to place a directive at that point in the circuit.

Continue placing further Generic No ERC directives, or right-click, or press Esc, to exit placement mode.

At any time during placement, press the Tab key to access the Properties panel, from where properties for the No ERC 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, or press Esc.

Additional actions that can be performed during placement – while the No ERC object is still floating on the cursor – are:

  • Press the Spacebar to rotate the No ERC object counterclockwise or Shift+Spacebar for clockwise rotation. Rotation is in steps of 90°.
  • Press the X or Y keys to mirror the No ERC object along the X-axis or Y-axis respectively.

Tips

  1. Rather than deleting a No ERC directive, it can be simply made inactive (disabled in the eyes of the Compiler). This state can changed by toggling the directive's Active property - either through the Properties panel (when viewing the properties for a selected No ERC object), or the SCH List panel.
  2. A Generic No ERC directive can be quickly switched to be a Specific No ERC directive, either through the Properties panel (in the Suppressed Violations section), or by toggling the Suppress Specific Violations property, on the SCH List panel.
  3. Suppressed violations can be displayed on the Messages panel by enabling the Report Suppressed Errors in Messages Panel option, on the Error Reporting tab of the Options for Project dialog. This feature can be used in the final stages of design to ensure that no critical errors have been inadvertently suppressed.
  4. By default, all design directives are included during printing. To control this, disable directives that you do not want included on your printouts in the Schematic Print Properties dialog.
  5. 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.


Applied Parameters: Source=UnderCursor

Summary

This command is used to place a Specific No ERC directive on a point in the circuit that is already showing a violation. The No ERC object is a design directive that can operate in two modes. In this specific mode, the directive is configured to target and suppress the warning or error conditions causing the violation, while allowing any other warning or error to be detected and reported.

For detailed information about this object type, see No ERC.

Access

This command is accessed from the Schematic Editor by right-clicking over a violating object in the workspace (highlighted by a wavy colored line) and choosing the Place NoERC to Suppress command, from the context menu.

Use

First, ensure that the cursor is positioned over the required violating object in the main design workspace.

After launching the command, a No ERC directive will appear floating on the cursor, pre-configured to suppress the violation(s). Simply position the cursor at the relevant point of the object, and click, or press Enter, to effect placement.

Additional actions that can be performed during placement – while the No ERC object is still floating on the cursor – are:

  • Press the Tab key to access the Properties panel, from where properties for the No ERC 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, or press Esc.
  • Press the Spacebar to rotate the No ERC object counterclockwise or Shift+Spacebar for clockwise rotation. Rotation is in steps of 90°.
  • Press the X or Y keys to mirror the No ERC object along the X-axis or Y-axis respectively.

Tips

  1. You can also right-click on a warning/error in the Messages panel, choose the Place Specific NoERC for this violation command, then jump straight to that point in the schematic and place a No ERC directive configured to suppress that warning/error.
  2. Rather than deleting a No ERC directive, it can be simply made inactive (disabled in the eyes of the Compiler). This state can changed by toggling the directive's Active property - either through the Properties panel (when viewing the properties for a selected No ERC object), or the SCH List panel.
  3. A Specific No ERC directive can be quickly switched to be a Generic No ERC directive, either through the Properties panel (in the Suppressed Violations section), or by toggling the Suppress Specific Violations property, on the SCH List panel.
  4. Suppressed violations can be displayed on the Messages panel by enabling the Report Suppressed Errors in Messages Panel option, on the Error Reporting tab of the Options for Project dialog. This feature can be used in the final stages of design to ensure that no critical errors have been inadvertently suppressed.
  5. By default, all design directives are included during printing. To control this, disable directives that you do not want included on your printouts in the Schematic Print Properties dialog.
  6. 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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