• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Allegro X PCB Editor
  3. When auto-connecting a trace from a via how do you stop...

Stats

  • Replies 2
  • Subscribers 160
  • Views 9595
  • Members are here 0
More Content

When auto-connecting a trace from a via how do you stop the software from changing netnames when a shape is on that layer.

Lennie
Lennie over 3 years ago

I have a via with netname VBAT. I have a dynamic shape on the same layer.  When I route from the via and stop in the shape area and end the route the netname changes to the name of the shape.  How do I stop this from happening ? 

  • Sign in to reply
  • Cancel
Parents
  • mcatramb91
    mcatramb91 over 3 years ago

    Net Name of Vias are normally inherited by a Pin or Shape and there is no guarantee it will remain connected to the expected net.  A good rule of thumb is to make sure the Via finds its way back to a Pin using a Cline connection to ensure that it maintains the Net with attaching the Via to a Static Shape a close second.

    Another option is to add the Property RETAIN_NET_ON_VIAS on the Net so its attached Vias don't easily jump to a different net.

    Hope this helps,
    Mike Catrambone

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
Reply
  • mcatramb91
    mcatramb91 over 3 years ago

    Net Name of Vias are normally inherited by a Pin or Shape and there is no guarantee it will remain connected to the expected net.  A good rule of thumb is to make sure the Via finds its way back to a Pin using a Cline connection to ensure that it maintains the Net with attaching the Via to a Static Shape a close second.

    Another option is to add the Property RETAIN_NET_ON_VIAS on the Net so its attached Vias don't easily jump to a different net.

    Hope this helps,
    Mike Catrambone

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
Children
No Data
Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information