Error -200022 or -200587 When Using NI DAQ Device

Updated Jun 28, 2019

Reported In

Hardware

  • CompactDAQ Chassis

Software

  • LabVIEW
  • SignalExpress
  • Measurement & Automation Explorer (MAX)

Driver

  • NI-DAQmx

Issue Details

I am creating a DAQmx task in LabVIEW using a Test Panel for my DAQ device in Measurement & Automation Explorer (NI MAX) or a task in SignalExpress. When I try to start the task I get one of the following errors: 

Error -200022: Resource requested by this task has already been reserved by a different task.
 
  

Error -200587: Requested operation could not be performed, because the specified digital lines are either reserved or the device is not present in NI-DAQmx. 

Solution

This error occurs when a task is already running on the requested device or when a particular line (or channel) is already reserved on the device. To resolve the error, ensure the following:

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