reading from serial port

[skh]

Thanks. I am sure that it wasn't used with another program.

What my guess is that because this device that I connected to the port #x has a problem of sending! may be this is the issue. I can investigate it better till Tuesday with my new device!

🙂

Sb

[Dennis_Knutson]

The device you have connected is irrelevant. VISA does not know or care what you have connected. You could get that error with nothing connected to the com port. The error is referring to the com port itself. Windosw does not allow more than one process to access a com port at a time.

[skh]

Then it is too bad. YOu mean evern without labview, I still have this problem?

Is there any way? to read from two port?

Thanks;

Sb

[Dennis_Knutson]

There is no problem with reading from two ports. It is done all of the time. The last time I did it was last Thursday. You have a local problem that you need to resolve. Something, whether it's MAX, a modem program, whatever, is also using one of the ports.

[skh]

I see. Now make sense. As long as I make sure the LabView program is working correctly, and no problem with configurations, then I can take care of other problem.

Sb

[RavensFan]

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@skh wrote:

I see. Now make sense. As long as I make sure the LabView program is working correctly, and no problem with configurations, then I can take care of other problem.

Sb

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Actually, just the opposite.  You need to take care of the other problem before you can know for sure your LabVIEW program is working correctly.

[skh]

I tested two ports seperatly and symelteniosly with two different programs. I run one port with Hyperterminal, and another port with BrayTerminal. I received data. So there is no problem with Windows.

The problem wih LabView it may my devie. As I mentioed one of the port gave me wrong value because of the funcionality of my device. I can be sure by Tuesday.

I appreciae all of your helps.

By the way, can I ask  a question about the string?

Cheers;

Sb

[Dennis_Knutson]

I already told you the error has nothing to do with the device. Of course, closing those programs may cause the error to go away and then you'll think that swapping the device fixed it. Simply not true.

[Yamaeda]

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@skh wrote:

I tested two ports seperatly and symelteniosly with two different programs. I run one port with Hyperterminal, and another port with BrayTerminal. I received data. So there is no problem with Windows.

The problem wih LabView it may my devie. As I mentioed one of the port gave me wrong value because of the funcionality of my device. I can be sure by Tuesday.

I appreciae all of your helps.

By the way, can I ask  a question about the string?

Cheers;

Sb

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Try the same thing in MAX, then you can see how it works in LV environment.

/Y

[skh]

I am not familiar wih LV environment. What is that? I couldn't find it online. IF you could please give me a link.

Thanks a lot;

Sb