Error -200220 for DAQmxCreateAIVoltageChan

[NIMaxUser]

Hi,

My code, which is:

TaskHandle h=0;
int32 b = DAQmxCreateTask("Task1",&h);
int32 a = DAQmxCreateAIVoltageChan(h , "Dev1" , "Voltage", DAQmx_Val_Cfg_Default, -10.0, 10.0, DAQmx_Val_Volts, NULL);

produces an error (The value of a is -200220.). I have the simulated NI USB-6251 as Dev1 running in NIMax. The reason that I know it is running properly is that when I use DAQmxGetSystemInfoAttribute, the name "Dev1" appears as one of the detected devices names.

But I don't understand why I still get the DAQmxErrorInvalidDeviceID error.

(b is 0 though!) 

I would really appreciate if anyone could help me solve the issue.

Thanks.

[Sinead_Brady_NIUK]

Hi NIMaxUser,

Do you have the same problem when you try to communicate with other simulated devices or just dev1?

Regards, 

[NIMaxUser]

Thanks, the problem was solved by adding the ai0 to the command.