Reference Application for NI CompactRIO Waveform Acquisition VIs, Examples for Waveform Data Acquisition with CompactRIO

  • Jump-start application development with easy-to-adapt examples for varying platform combinations
  • Continuous and finite acquisition architectures using the easily integrated waveform data type
  • Incorporate calibration and scaling operations into the FPGA to free host resources
  • Use polling-based read functions for increased control over CPU usage during data acquisition
  • VIs perform a full complement of error checking (FIFA overflow, module underflow, timeouts)
  • Download
Many reconfigurable I/O (RIO) applications acquire continuous blocks of data from multiple synchronized NI C Series modules. This reference application presents CompactRIO waveform data acquisition VIs and example source code that incorporate RIO best practices. You can easily modify these examples to jump-start your application development.

Specifically, the project allows for both delta-sigma-based and non-delta-sigma-based module support, with common acquisition functions grouped into logical blocks. Examples cover multiple continuous and finite acquisition modes with waveform data types. Employed VIs push calibration and scaling operations onto the field-programmable gate array (FPGA), perform a full complement of error checking, and allow for increased user control over CPU usage - all important as the basis for application development.

The flexible examples can adapt to many different hardware combinations. For most applications, you need to modify only the FPGA VI.

System Requirements
Application Software: NI LabVIEW Full Development System 8.6 or later
Toolkits and Add-Ons: LabVIEW FPGA Module 8.6, LabVIEW Real-Time Module 8.6
Hardware: CompactRIO
Driver: NI-RIO 3.1

Disclaimer: This reference architecture was created by the NI Systems Engineering group and is provided as is. NI does not guarantee the performance of this reference architecture. Links to detailed information on this reference architecture and to a forum to provide feedback and ask questions are included in the Resources tab.

Reviews are typically processed within 48 hours. If you believe a review is incorrect or inappropriate, please report abuse to
Verified Reviewers have submitted an email address to

IMPORTANT INFORMATION: You are being directed to a third party web site operated by RateVoice to submit your rating and/or review. You agree that the RateVoice Terms of Use apply to your access of, and submissions to, the RateVoice site. In addition, you agree that the "User Contributions" and "Your Conduct" sections of the NI web site Terms of Use apply with respect to your rating and review related conduct and submissions as if the term "Site" in those sections also referred to the RateVoice web site. Please remember that any information (including personal information) that you disclose in connection with ratings and/or reviews may become public information that others may collect, circulate, and use. Because NI cannot and does not control the acts of others, you should exercise caution when deciding to disclose information about yourself or others in public forums such as these.