Virtual Serial Port

[Microhertz]

I'm trying to run a LabVIEW program on older Window XP computers (small portable with display, bought 10 of them).  I have a USB data acquisition device connected to an USB port.
The virtual serial port is not seen by VI. It does not show in NI MAX either.
But it shows in Device Manager.
It works fine on Windows 7.
Drivers are installed.
Works fine with a terminal program (Win7) .
What could be the problem?
Changing the name to "COM" in Device Manager, as some suggested, was not possible.

[santo_13 · Accepted solution]

Were you able to test it out using Putty or Terminal on WinXP?

If Windows detects it as a COM port and you've VISA driver installed, you should be able to see them listed under the VISA control.

[crossrulz]

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@Microhertz wrote:

I have a USB data acquisition device connected to an USB port.

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And what DAQ is this?  If it is an NI DAQ, then you need DAQmx, not VISA, to use it.

[Microhertz]

It's an  ACD_10_F103C.

[Microhertz]

Didn't realize it needs VISA drivers too.  Will search for them later and try that.

[Microhertz]

It works!

I installed the VISA drivers (took a loooong time).

I had just installed the CH341 USB/serial drivers.

Have not worked with LabVIEW for a long time, forgot about the VISA drivers.

Thanks!!!