Controlling KE2000 with LV7.1

[Anonymous]

Hi there,

I'd like to do some simple measurements with a Keithley 2000 DMM
through LabView over Serial Port and Im even stuck with this simple
task. I played around with the VISA-Controls and even got some
measurements as I wanted to, however, I get (seemingly) random
timeouts. I tried the sample Programm form the Keithly Website
(VisaReadWrite) and first it worked, and now it's stuck, too. The odd
thing is, that first, the timeout was at the Visa-Read step, and a
little later (after various tries without changing anything) I get a
Timeout at the Write-Step. The Device itself does not show any errors,
turning it off and on again does not working, neither does restarting
LV.
Maybe I just locked up the VISA-Session or something? Any Help would be
appreciated!

Dave

[NIquist]

Mmmm, I use the Keithley KE2001s all the time but with GPIB.  VISA communications can be quirky and confusing at times.  Although I'm not very familiar with the serial versions I might be able to give you some insight if you post your code.  Without seeing your code I would suspect that there is still some data in the serial buffer causing the timeouts.

Regards,

K

[Joe_H]

I have used the serial with the keithly and always had quirky little problems like this then i switched to GPIB and never had a problem.

post your code so that we may have a look. I think I still have that meter around here somewhere. Maybe I can try it out here for you.

[thehobbs]

You should also evaluate using the Keithley 2000 certified LabVIEW driver available on NI's Instrument Driver Network (ni.com/idnet).  You can either use it directly or as an example for how to program the instrument yourself.

[wd8ivl]

Dave,

I have also had RS232 issues with the KE2000 and another Data Acquisition program (CEC TestPoint).  They went away when I dropped the baud rate from 19.2K to 9600. 

I don't know if that will help with LV7.1, but it's worth a try.

Mike