When performing serial communication in error stream, there are three elements:status,code,source.

[zhang519]

I want to know this three element represent what is the meaning?Every value represent Significance .

[altenbach]

Status is a boolean that is true when an error occurred and false when no error occurred. It tells you if an error occurred.

Code is an error code tha you can look up (e.g. right-click...explain error). It tells you what kind of error occurred.

Source is a text field that can contain information on where the error occured.

[Gregory]

If the "status" is false but there is some information in the "source" then it is considered a warning.

[johnsold]

The first place to look for information like that is the Context Help window. Everything altenbach told you is available there. It is good to get into the habit of keeping that window open while programming.

Lynn

[zhang519]

I want to know that every "code" represent meaning,how to search it.

[Bob_Schor]

In the upper right part of the main LabVIEW Forum, there are links to LabVIEW tutorials.  View all of them and you will not have to ask such basic questions.

Bob Schor

[natasftw]

You want us to explain several million error codes to you? 

Go to Help->Explain Error and start typing them in one by one.  You'll get explanations there.  Don't forget to look at the negative values as well.

[crossrulz]

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@zhang519 wrote:

I want to know that every "code" represent meaning,how to search it.

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Let's see here.  I typically run into:

7 - File not found (try to open a file that does not exist)

10 - Duplicate path (try to create a path that already exists)

1 - Input parameter invalid (typically from an invalid reference)

Beyond that, I'm using the Righ-click on the error cluster that is showing the error and selecting "Explain Error".