Terminate Instrument I/O Assistant before timeout occurs

[mattias@hv]

Hi,

I have a loop with an Instrument I/O Assistant for serial communication. Everything works great so far. My question is: Is it possible to terminate the execution of and Instrument I/O Assistant by means of a button (or likewise) before the timeout is activated? Now I stop the while loop with a button. However, if the Instrument I/O Assistant is waiting for a new command the loop wont stop until the Instrument I/O Assistant makes a timeout.

Sorry if I'm not explaining the problem good enough. Please let me know if you want more information or if you have any suggestions for terminating the Instrument I/O Assistant.

Best regards,

Mattias

[jon_mcbee]

I don't know what an Instrument I/O Assistant is, do you think you could either post an image of your code or post a piece of sample code that illustrates your problem?

[mattias@hv]

The Instrument I/O Assistant is described here:

http://cnx.org/content/m12294/latest/

Best regards,

Mattias

[jon_mcbee]

I don't have much experience with using express VI's, but by right clicking on it and selecting Open Front Panel I discovered that all it does is use VISA functions to communicate.  I am not sure how to stop the Instrument I/O function before it times out but I could help you do what you want to do with VISA fuctions.

[mattias@hv]

I took the express VI because it solved my first problem (beginners choice ), I now realise that it might perhaps not solve my current problem. Please, if you have the possibility, could you provide me with an example that uses standard VISA functions?

A very big thanks in advance.

/Mattias

[RavensFan]

Look in the Example Finder for Serial I/O examples.

Also, do what Jim says and right click on the Express VI and Open Front Panel.  You'll see and learn from the code that the Express VI is doing in the background.

[jon_mcbee]

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mattias@hv wrote:

I took the express VI because it solved my first problem (beginners choice ), I now realise that it might perhaps not solve my current problem. Please, if you have the possibility, could you provide me with an example that uses standard VISA functions?

A very big thanks in advance.

/Mattias

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I can do you one better.  On the toolbar select Help>>Find Examples

and search for:   Advanced Serial Write Read

This is a great shipping example for you to look at.

(Beat to the punch)

Message Edited by jmcbee on 03-13-2009 02:28 PM

[mattias@hv]

Excellent! Thanks for your time!

Kudos to you!

/Mattias