Control PCI 6521 Using .NET

Updated May 3, 2018

Reported In


  • PCI-6521


  • Measurement Studio (Legacy)


  • NI-DAQmx

Operating System

  • Windows

Programming Language

  • C# .NET
  • Visual Basic .NET


NI-DAQmx Runtime
NI-DAQmx Runtime with Configuration Support

Issue Details

How to control PCI 6521 card inputs and outputs via .NET. I want to access inputs and outputs of PCI 6521 card in my application. Is there some API for it? Do I need LabVIEW Runtime on PC to use it?


For using PCI 6521 card you need DAQmx driver. For .NET application you also need .NET Framework.

  1. Install DAQmx driver on your computer. You can choose DAQmx full driver for developing applications, RunTime DAQmx with Configuration Support for running of developed applications or RunTime DAQmx without MAX.
  2. Optional - When you are using Visual Studio for developing the applications, you can use our tool Measurement Studio. You are able to use it also in other environments, please be aware of option "Install this feature and its subfeatures to a local drive" during the installation. Details about the effects installing this option are described here.
  3. After you install DAQmx driver, you can find prepared examples for your applications on thislink.


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