Altium Designer Documentation

Nets with Multiple Names

Modified by Susan Riege on Feb 28, 2019
All Contents

Parent category: Violations Associated with Nets

Default report mode:

Summary

This violation occurs when a net in the design has been detected to have multiple names associated with it.

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 also displayed in the Messages panel in the following format:

Nets <Identifier> has multiple names (<NameList>)

where:

  • Identifier represents the type of connection and the name of the net. The connection can be one of the following:
    • Wire - where the identifier will appear in the format Wire NetName (e.g., Wire DTSA)
    • Bus - where the identifier will appear in the format Bus Slice NetName (e.g., Bus Slice A[0..7])
    • Bus Element - where the identifier will appear in the format Element[n]: NetPrefix (e.g., Element[0]: A)
  • NameList is a comma-separated list of all names found associated with the offending net. These names can come from attached net labels, sheet entries, power ports, and offsheet connectors.

Recommendation for Resolution

This violation can be resolved by ensuring that the names of all net identifiers associated with a particular net are the same. However, in many cases, it is beneficial to use different names for a particular net - for example, when that net is present on different branches of a hierarchical design and different names better reflect the conducted signal in those branches. Similarly, you may want to describe the sheet entry of a particular sheet symbol using a different name to that of the net label attached to the incoming/outgoing wire or bus.

To freely use multiple names with nets in your design and prevent related violation messages appearing in the Messages panel, set the Report Mode for this violation type to No Report on the Error Reporting tab of the Options for Project dialog (Project » Project Options).

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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