Error -200077 with Hardware Timed Single Point with Multifunction I/O Device

Updated Mar 15, 2023

Reported In


  • USB-6216
  • USB-6366


  • LabVIEW


  • NI-DAQmx

Issue Details

I want to do hardware timed single point acquisition with my USB multifunction I/O device, however, it is coming up with an error -200077 occurred at DAQmx Timing: Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property.
How can I fix this?


This error is occurring because USB multifunction I/O devices do not support hardware timed single point acquisition. Only PCI/PXI/PCIe/PXIe DAQ devices have the ability to support Hardware-Timed Single Point Sample Mode (HWTSP). For a complete list of supported and unsupported device, please refer to our documentation here .

Additional Information

In HWTSP, samples are acquired or generated continuously using hardware timing without a buffer. Because samples have to be continuously acquired/updated and processed on a point-by-point basis, you need to use a fast, deterministic bus. The inherent latency of the USB bus itself does not provide enough determinism to allow this output mode, therefore it is not supported.