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 Post subject: Superimposed pins
PostPosted: 17 Sep 2017, 14:49 
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Joined: 14 Jun 2010, 12:59
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The Electrical Rule Setup panel has five "Rules to Check", one of which is "Pin Superimposing". Schematic Help advises that activating this rule means that "DipTrace will consider all superimposed pins as errors."

What are superimposed pins?

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Steve


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 Post subject: Re: Superimposed pins
PostPosted: 17 Sep 2017, 20:24 
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Joined: 20 Jun 2015, 14:39
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The DipTrace tutorial definition: "Pin Superimposing – the program searches for pins overlaying each other"

When only the [X]Pin Superimposing option is enabled in the ERC setup, superimposed pins will not be reported as being "superimposed". Instead, they will be ambiguously reported as not being connected. For example...
"Error - No Pin Connection: U1: Input A"
"Error - No Pin Connection: U2: Input A"

This is identical to the error message generated when only the [X]Not Connected Pins option is enabled. Seems to me that the ERC error message for the same two "superimposed pins" should read something like the following...
"Error - Superimposed Pins: U1(Input A), U2(Input A)"

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Tom


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 Post subject: Re: Superimposed pins
PostPosted: 17 Sep 2017, 22:42 
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Joined: 14 Jun 2010, 12:59
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So superimposing pins are pins that physically overlay one another in the schematic drawing?


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 Post subject: Re: Superimposed pins
PostPosted: 18 Sep 2017, 06:51 
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Yes. That is my interpretation. To me, error reporting for "Pin Superimposing" is too ambiguous and could be confused with "Not Connected Pins" error reporting. Also, if overlapping pins are connected there will be no "Pin Superimposing" errors reported (even if they are not even connected to each other). Here are some examples...


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 Post subject: Re: Superimposed pins
PostPosted: 18 Sep 2017, 14:20 
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Joined: 14 Jun 2010, 12:59
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Thanks Tom. That clarifies the topic as well as some of the curious behavior I was seeing with the ERC Pin Superimposing rule.

Steve


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