Data at Serial Port

[shrekt]

 Hi all,

First let me explain setup :

I am communicating between 2 PCs through RS 232.

now my ques is :

I want to implement like, if the serial port gets the data then only read and only those many bytes which are on the seial port,

Now i am doing it, as read the serial port but if data is not there then timeout error comes.

If anyone can share some thought on it.

Regards,

Shrekt

[Andy.G]

Hey Shrekt,

Im a little bit confused on exactly what you are trying to do, could you attach a print screen of your code maybe?

[shrekt]

I mean I want to read the port only when there is some data on the it, until then wait and check if data is there.

Regards,

Shrek

[Dennis_Knutson]

Simply use the VISA Bytes at Serial Port.

[Andy.G]

Hey Shrekt,

For what I can tell there is no particularly easy way to do this. I have found a relevant post one of my colleagues has created which might just be useful to you and help you on your way a little. The link is posted below, you may need to copy and paste it into your browser address bar. Failing that you can always go onto the ni website (ni.com) -> developer zone -> examples -> in search bar type "message bus" and it should be the first result.

http://decibel.ni.com/content/docs/DOC-12159

Hope this helps!

[Dennis_Knutson]

Andrew,

I don't see the relevance or the difficulty. The function I mentioned is used in the shipping examples and in in hundreds of other posted serial examples.