An exception occurred within the external code call by a Call ... VI "BlockState.vi:2" was stopped at node "" at a call to "DAQmxAssistant_DAQmx Control Task.vi:1"

[LKKSPP]

Hello,

I used MAX explorer to add two analog input(AI) channels of myDAQ into a task. It works fine for this.

For now I need a four-channel's analog input application, so I get two myDAQs for that. I add both of two AI channels of the two myDAQs into a task but always get the message:

An exception occurred within the external code call by a Call ... VI "BlockState.vi:2" was stopped at node "" at a call to "DAQmxAssistant_DAQmx Control Task.vi:1"

Showed as below:

The pic below shows two myDAQ are used simultaneously for a four-channel AI application.

Could you please help or give some hint? The situation is quite easy to reproduced. Just get two myDAQs and add both of its two AI channels of myDAQ to combine four channels into MAX explorer's task.

Thank you!

[Billingsley]

Plz tell more informations such as

OS? WinXP or Win7

NI-DAQmx driver version?

NI-ELVISmx driver version?

Do you try another PC?  Can you duplicate the same problem?

 ( Sometimes virus will cause this problem. )

[LKKSPP]

Thanks the reply!

The problem have tracked in another thread:

http://forums.ni.com/t5/Academic-Hardware-Products-NI/Cannot-combine-AI-channels-into-a-four-channel...

Jim Lou (LKKNLP)