PCI-6035E DIO Change Detection

[csk]

CVI 8.1

PCI-6035E

Ex: ReadDigChan-ChangeDetectionEvent.c

When I either try to setup a DAQmx task in this example app or in MAX

I get this error:

Error: Requested value is not supported for this property.

Property: SampTimingType

You Have Requested: Change detection

You Can Select: On Demand

I am trying to create an app wherein a DAQmx task is monitoring

a single DIO bit via an asynchronous callback function.

Any ideas?

-Chet

[Aaron_W. · Accepted solution]

Chet,

Thank you for posting on the NI Forums. I was able to look into the issue that you are encountering and it is because the E-Series Devices do not support the Change Detection property. If you are simply trying to monitor a bit, you would have to use polling to determine when the bit has changed and then perform an action once you determine the bit has changed. Let me know if you have any other questions.