Altium Designer 20: объединение цепей на разных листах проекта и про ошибку «has only one pin»
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Created: August 3, 2021 | Updated: August 3, 2021
Applies to Altium Designer version: 21
Contents
- Summary
- Notification
- Recommendation for Resolution
- Tip
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 contain only one component pin.
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:
Net <NetName> has only one pin (Pin <PinName>)
where:
- NetName is the name of the parent net.
- PinName is the component designator-pin designator identifier.
Recommendation for Resolution
By default, this message will not appear in the Messages panel. If you have enabled reporting for this violation type and want to resolve the issue, ensure that the offending net is wired to at least two component pins in the design.
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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Asked
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I am doing a schematic and following multi-sheet hierarchical design. Connecting two sheet entries with a bus is giving me an error of «net has only one pin». I have read many articles on this, but I want to understand what is wrong with this and even after verifying the net is connected at both the ends, why the error shows up?
JYelton
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asked Sep 7, 2017 at 16:12
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GO to menu bar,
click on «Project->Project Options»
select «Error Reporting» tab
under items of «Violations associated with nets»
click on item «Nets with only one pin»
change «ERROR» to «Warning» or «No Report» in Report mode column
good luck!
answered Jan 9, 2019 at 15:40
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altium errors (net xxx only have one pin)
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Thread starterarr_baobao
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Start dateAug 17, 2017
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Hi all,
I have encounter this error in altium pcb design when i trying to compile my project.
what does all the errors means? and how to solved this error?
Is this a fatal error or i can just ignore and proceed to PCB layout.
thanks.
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barry
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It looks like you’ve got pins with nothing connected to them. Only you can tell if that’s correct or not.
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These are single pin nets, means that these conncetions starts from U1 pins but donot connect to any other pin.
If these are deliberate then you can ignore them.
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Altium provides a specific directive which tells DRC tool to ignore them when compiling project. Just click on menu : Place>>Directive>>Generic NoERC and put it at the unused pins.
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Go to ECE
Altium Error — Net has only one pin
Hey guys. I’m getting about 800 errors on my schematic, for basically every single signal. The error is there on my harnesses entries as well. I tried searching on Altium’s site, but the information there about this specific error was of no help. Anyone know how to deal with this? Any help is greatly appreciated.
Also, there’s another error on my top-level schematic that says «Sheet Entry not linked to child sheet». I’ve made sure each sheet has synchronized ports, but nothing is making the error go away. 