I use an Agilent USB/GPIB Interface 82357A to control 4 instruments (osc, power supply, waveform generator, multimeter), I already do this by sending them the instructions with VISA write, the vi works very good I can change the intstructions and there is no problem, the problem is that i can only do this the first time i run the vi, even if i close LabView it doesnt work again i can´t acces the instruments ( i have to restart the computer to control the instruments again), I don´t know why happen this!!, what i need is only to control them withot restarting the computer, i need only to stop the program and re-start the program again to cntrol the, this would be the perfect condition.
(There are no warnings, or error during the program)
Heeelp