Error -200077 Occurred at DAQmx Function

Updated May 1, 2020

Reported In

Hardware

  • Multifunction I/O Device

Software

  • LabVIEW

Driver

  • NI-DAQmx

Issue Details

I am encountering error -200077 with a DAQmx VI: 

Error -200077 Requested value is not a supported value for this property. The property value may be invalid because it conflicts with another property.

 

Solution

Depending on what NI DAQ device your application uses and also I/O type of the channel, certain terminals will only accept certain inputs.

In the body of the error message, Property will let you know what terminal on the DAQmx Function is reporting the error, Requested Value indicates what value you are currently attempting to pass, and Possible Values informs what an acceptable input would be. Changing the value to one of the Possible Values will resolve this error. 

If running a Shipping Example, verify the device you are using is supported with that example by checking under its "Requirements" section in the NI Example Finder.

Additional Information

In the above screenshots for a multifunction DAQ device, the only acceptable values are as follows:
  • DAQmx Create Channel (AI-Voltage-Basic): Error -200077 is occurring due to NRSE being the currently selected value. Changing this to Pseudodifferential will resolve the error. If you are encountering a similar error but believe your device should support the value you have selected, check with your device's manual to verify which pins support which measurement types.
  • DAQmx Timing (Sample Clock): The Sample Rate value needs to be changed or the Mode should be changed to On Demand.
  • DAQmx Create Channel (AO-Voltage-Basic): Suggested input values (Volts or From Custom Scale) should be used for units for analog output (AO) tasks.