Hello everyone, I have two instruments. One is autowave and another VDS. I need to controll them from same vi. Is it possible? Here is what i want to do: 1) at first set initilize autowave 2) initilize VDS 3)Send wave form from Autowave. I put these three cases in a state machine. They work as expected. But problem it is stuck in the third case. AS a result, I get the error below. "Object reference is not valid". I think my state machine doesn't reach to the third state. It could be because i am using the same instrument in State on and three. I don't how to use Autowave then VDS and then go back to autowave to do the 3rd task. Thanks in advance for any clues.

Instrument Control (GPIB, Serial, VISA, IVI)

Controlling two machine in on VI

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Hello,

Understood, but unfortunately i am having error in one of the IVI driver VI. I am getting the error below. It is a IVI session error. Even though, I am putting the correct channel name.

best regards

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Instrument Control (GPIB, Serial, VISA, IVI)

Controlling two machine in on VI

Re: Controlling two machine in on VI