Change Detection Considerations for NI 6527 Devices

NI-DAQmx 18.6 Help

Edition Date: January 2019
Part Number: 370466AH-01
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The ChangeDetect.Overflowed attribute/property uses the change detection overflow circuitry on a DIO device to determine if an overflow occurred. The NI 6527 change detection overflow circuitry does not detect an overflow if a single rising edge and a single falling edge are detected prior to reading a sample. It will detect overflows if two rising edges or two falling edges occur prior to reading a sample.


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