NI CompactRIO and Drivers and R Series Multifunction RIO December 2019 (19.6) Known Issues

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This document contains the known issues introduced in the NI CompactRIO 19.6 and Drivers and R Series Multifunction RIO 19.6 release (December 2019) that were discovered before and after the release of the driver. This list includes only severe or the most common issues that were introduced in the NI CompactRIO and R Series Multifunction RIO 19.6 releases and does not include every issue known to NI. New issues appear at the top of this document. If an issue appeared in a previous version of the CompactRIO Device Drivers or R Series Multifunction RIO driver and has not been resolved, it will not be listed again here.

The workarounds described in this document are not always tested by NI and are not guaranteed to resolve the issue. The brief description given does not necessarily describe the problem in full detail. If you would like more information on an issue, visit ni.com/contact and reference the issue ID. If you identify a workaround for an issue that is not listed in this document, please contact NI so that the workaround may be published.

ID Known Issue Affected LV Versions
252146

Passing an Error into an R Series I/O Node Returns Previous Value

 LabVIEW 2015 to Current
895448

Simulation Mode Ignores AI Terminal Mode in R Series Cards

 LabVIEW 2019

 

 

Known Issues with NI CompactRIO and R Series Multifunction RIO 19.6 (December 2019)

ID Known Issues
252146

Passing an Error into an R Series I/O Node Returns Previous Value

When an error is passed into an R Series FPGA I/O Node, the node will return the last valid value from the node instead of zero. .

Workarounds: 

Check for an error before executing the I/O Node. If an error has occurred, discard the data returned from the I/O Node. 

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895448

Simulation Mode Ignores AI Terminal Mode in R Series Cards

The FPGA Simulation (Real I/O) Mode ignores RSE and NRSE AI Terminal Mode on R Series cards. When in Simulation Mode, the AI Terminal Mode is ignored and results returned from the I/O Node are values from a Differential (DIFF) AI Terminal Mode configuration.

Workarounds: 

There is currently no known workaround for this issue. Until this issue is resolved, Differential Mode (DIFF) is the only supported AI Terminal Mode for Simulation (Real I/O) Mode. 

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Glossary of Terms

 

  • Bug ID - When an issue is reported to NI, you may be given this ID or find it on ni.com.  You may also find IDs posted by NI on the discussion forums or in KnowledgeBase articles.
  • Legacy ID – An older issue ID that refers to the same issue.  You may instead find this issue ID in older known issues documents.
  • Description - A few sentences which describe the problem. The brief description given does not necessarily describe the problem in full detail.
  • Workaround - Possible ways to work around the problem.
  • Reported Version - The earliest version in which the issue was reported.
  • Resolved Version - Version in which the issue was resolved or was no longer applicable. "N/A" indicates that the issue has not been resolved.
  • Date Added - The date the issue was added to the document (not the reported date).