Scan List Configuration Error When Reading Across Multiple Channels

Updated Oct 12, 2021

Reported In


  • NI-9220


  • NI-DAQmx

Issue Details

  • I noticed that the NI 9220 will always return Error -200284: Some or all of the samples requested have not yet been acquired. or Error -209866 occurred at Property Node DAQmx Timing despite the computer, version of DAQmx driver, or configuration.
  • When reading multiple channels on my NI 9220 AI module, I receive Error -209866: The hardware cannot acquire data from the configured scan list.
  • When I try to read channels that are spread far apart, I receive an error. I am able to read other channels that are closer together.


NI discovered an issue where certain scan list configurations causes the module to hang due to the FPGA running onboard the device. Subsequent use of the module with the effected scan lists or after the scan list will return error -200284. If using DAQmx 18.1 or newer, error -209866 will be thrown. This issue only affects users employing the module with the DAQmx driver.

This error occurs specifically when there are 2 active channels, then a string of 11 inactive channels, followed by another active channel. The effected scan lists are as follows:
  • 2003->CH0, CH1, CH13
  • 4003->CH0, CH1, CH14
  • 4005->CH0, CH2, CH14
  • 4006->CH1, CH2, CH14
  • 4007->CH1, CH2, CH14
  • 6003->CH0, CH1, CH2, CH14
  • 8003->CH1, CH2, CH15
  • 8005->CH1, CH4, CH15
  • 8006->CH2, CH3, CH15
  • 8007->CH0, CH1, CH2, CH15
  • 8009->CH0, CH3, CH15
  • 800A->CH1, CH3, CH15
  • 800B->CH0, CH1, CH3, Ch15
  • 800C->CH2, CH3, CH15
  • 800D->CH0, CH2, CH3, CH15
  • 800E->CH1, CH2, CH3, CH15
  • 800F->CH0, CH1, CH2, CH3, CH15
  • A003->CH0, CH1, Ch13, CH15
  • C003->CH0, Ch1, CH14, CH15
  • C005->CH0, CH2, CH14, CH15
  • C006->CH1, CH2, CH14, CH15
  • C007->CH0, CH1, CH2, CH14, CH15
  • E003->CH0, CH1, Ch13, CH14, CH15
If the previously mentioned scan lists were used, you can:
  • Reset the chassis.
  • Unplug and re-plug the module in the chassis.
  • Or power cycle the chassis in order to get the module back into a working state.