Error in reading a digital signal

[Santhosh_kth]

Hello,

I am trying to read a digital signal from NI USB 6215 from PFI0. But, When I run the VI, an error shows saying:

Error -200077 occurred at Property Node DAQmx Timing (arg 1) in DAQmx Timing (Burst Import Clock).vi:5840001->digital_cI.vi

Possible reason(s):

Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property.

Property: SampTimingType
Requested Value: Burst Handshake
Possible Values: On Demand

Please suggest any reasons. I attached the error and the VI.

Thanks

[Duffy2007 · Accepted solution]

Hello Santhosh_kth,

the digital lines of the USB 6215 are static so only software timing can be used. The DAQmx timing vi must be removed.

Page 7 in the USB 6215 specifications

[Santhosh_kth]

Thank you. I understood the problem. But, if I want to read the digital signal in a 'continuous' mode using a sample clock, what type digital lines are required? 

Thanks again.

[Duffy2007 · Accepted solution]

Hello Santhosh_kth,

detail explanation for your device:

Correlated DIO with USB M Series DAQ Device

What Options Do I Have for Hardware-Timed Digital I/O on My M Series DAQ Device?

You have to use a different hardware like a x-series card or a external powered usb device from the m-series.