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No Net

Created: 8月 03, 2021 | Updated: 8月 03, 2021 | Applies to version: 4

This document is no longer available beyond version 4. Information can now be found here: No Net for version 5

This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer and a connected Altium 365 Workspace. Check out the FAQs page for more information.

 

Parent category: Violations Associated with Connections

Default report mode:

Summary

This violation occurs when a connector pin represented in a module entry on the Multi-board Schematic is not connected to any net in the child design project referenced by that module.

Compiler violations associated with Multi-board Design projects are only presented after running an Electrical Rules Check from the project's Multi-board Schematic document (*.MbsDoc). Do this by choosing the Design » Run ERC command from the main menus.

Notification

If compiler errors and warnings are enabled for display on the schematic (enabled on the Schematic - Compiler page of the Preferences dialog), an offending object will display a colored squiggle beneath it. Hovering over the object will display a pop-up hint that summarizes the violation. A notification is displayed in the Messages panel in the following format:

"Pin <ConnectorDesignator-PinNumber>" is not connected in child project "Module <ModuleDesignator>(<ChildProjectName>)"

where:

  • ConnectorDesignator-PinNumber is the designator of the connector component in the child design represented by the module's entry and the offending pin of that connector.
  • ModuleDesignator is the designator of the module on the Multi-board Schematic that is used to reference the child design project.
  • ChildProjectName - is the name, including extension, of the child project referenced by the module, and containing the connector whose indicated pin is not connected to a net.

Recommendation for Resolution

This violation can arise in a number of situations. Consider the following when resolving a violation of this type:

  • If the pin of the referenced connector is not to be used within the design, tie it to the appropriate power line (e.g., GND).
  • Ensure that any wiring to the connector pin is making electrical contact, i.e. the wire or bus connects to the pin's electrical hot spot.
  • If the connector pin is intended to have a short wire and a net label, ensure that the net label exists and has been attached to the wire correctly.

Tip

  • Object hints will only appear provided the Enable Connectivity Insight option is enabled on the System - Design Insight page of the Preferences dialog. Use the controls associated with the Object Hints entry in the Connectivity Insight Options region of the page to determine the launch style for such hints (Mouse Hover and/or Alt+Double Click). 
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