usb to serial

[MarkDavid]

I am using a device (power meter..Maestro)  that talks over a USB Cable.  I downloaded the usb drivers from the manufacturers website and can talk to the device using Hyperterminal.  When I try and use MAX or Basic Serial Read/Write.vi neither works.    The read field of the vi is blank.  Does VISA treat the USB as a serial interface??  Its showing up as COM 3.  I did put in all the correct parameters..BAUD, Stop BITs, parity..etc.

Thanks

[GerdW]

Hi Mark,

did you also read the device's manual and did you set the EndOfLine char correctly in the VISA-Init call?

[JÞB]

It should act like a VISA Serial:Intr class.  Did you close the hyperterminal connection first?  You can't open two connections to a COM port.

[shjukheter]

Try adding termination characters to your writing command. In serial terminal these are added automatically but not in labVIEW. So, add CR and LF to your command.

[MarkDavid]

Yes, closed the Hyperterm  Past exp has told me you can't have to sessions open at the same time.

[MarkDavid]

Unless that is unique to Labview..the manual says I don't need the cr and line feed....but I'll give it a shot.

[AnalogKid2DigitalMan]

Gentec also has LabVIEW drivers, which may make your task a bit easier:

http://www.gentec-eo.com/downloads

-AK2DM