When i connect the TTi QL564P Power Supply via USB i don't see on MAX (devices and interfaces) the virtual serial connection. With GPIB everything works fine!
I already downloaded the newest drivers from the TTi website.
And i created a simple VI like this:
VISA OPEN --> VISA WRITE ("V1?") --> DELAY(0.1s) --> VISA READ --> VISA CLOSE
(works via GPIB, doesn't work via USB)
On VISA OPEN i have on VISA resource name only the LPT1 and COM1 ports available...so where is the USB (this case, virtual serial port) ??
With GPIB the VISA resource name is the ALIAS which i defined on MAX...
Solved! Go to Solution.
ah...forgot to say that i also used the TQLP drivers ....the initialize don't work with USB, but works fine with GPIB!!
TQLP Initialize With Options.vi<ERR> Driver Status: (Hex 0xBFFF0015)
The problem...is that i don't see the USB VISA resource name.... i was hopping to get something like this "USB0::1::INSTR" or something...
But i only see my GPIB alias, and the COM and LPT ports...
Thanks for the reply!!
This power supply (TTi QL564P) as the manual says, is designed to emulate an RS-232 via USB interface.... But when i connect the power supply (via USB) to my computer, i don't see anything happen... neither on my computer and on MAX. When i use GPIB everything works fine, but i really need to use USB.
I've installed the driver from the vendor (http://www.tti1.co.uk/downloads/drivers-download.htm)
And the instrument does not appear on my device manager tree (under "Universal Serial Bus controllers" ) ... what is wrong with this ??
thanks for the help!!
Yes, but if in want use them , they don't work. (the example don't work) So if some one has a example vi who is working...please.
Well, simply saying something does not work is insufficient. You need to provide the driver you are using (LabVIEW or IVI), the name of the example, any error codes, a detailed description of what does not work, etc.
error code (below) when i use the example from TQLP (the power i use)
Did i do something wrong in MAX????