Controlling KE2000 with LV7.1

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

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
Using LabVIEW: 7.1.1, 8.5.1 & 2013

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