hello , i have a problem in my labview program, i want to display the information from the sensor in my Labview using Visa ressource, but the visa configuration does not detect the serial ports of my pc. what should i do !

[Imen\beltaief]

hello ,
i have a problem in my labview program, i want to display the information from the sensor in my Labview using Visa ressource, but the visa configuration does not detect the serial ports of my pc. what should i do !

[DangerDave]

Hi Imen\beltaief,

Are you able to see the serial ports in NI MAX?  If you can, are you able to interface with your sensor in a Test Panel? NI MAX is usually the best place to diagnose any potential problems with your hardware or connections, without needing to worry if the code is incorrect

[Imen\beltaief]

hi ,

I try to verify the serial port in Ni Max , but i found nothing in peripheral and interface case.

[DangerDave]

Hmm...  Are you able to see the serial port in Windows' Device Manager?

[Imen\beltaief]

yes , i see it , but it have a problem, even i download the driver cable , i can't  show the serial port in visa configure.

[Imen\beltaief]

yes , i see it , but it have a problem, even i download the driver cable , i can't  show the serial port in visa configure.

[Sam_Sharp]

The exclamation mark next to the device name indicates that there is a problem with the device - typically that there is no device driver installed, or the wrong driver is installed. If you open the device properties, it should provide some more information on the problem. You should try installing the driver that came with the device, or try to find one on the prolific website (if it's a prolific device).

Be aware that there were a lot of counterfeit prolific devices in the market - the counterfeit ones could cause a problem like this. You might want to try a different one, or one based on a different chipset (e.g. FTDI).

[Imen\beltaief]

maybe there are a  problem of the driver cable  , but i think that visa configure dont need for this driver to show the serial port , normally, it has 

as default all the serial port of my computer ,isn't !.

[DangerDave]

Hi Imen\beltaief,

Have you taken a look at this older forum post?  It looks like it could be a good resource for you.

USB-serial not found by NI-VISA

http://forums.ni.com/t5/LabVIEW/USB-serial-not-found-by-NI-VISA/td-p/2109276

In particular, a reply on the second page by SnowMule reiterates Sam_Sharp's point that there should not be any exclamation marks next to the ports in Device Manager