NI-Industrial Communications for DeviceNet 21.5 Known Issues


This document contains the NI-Industrial Communications for DeviceNet known issues that were discovered before and since the release of NI-Industrial Communications for DeviceNet 21.5. Known issues are performance issues or technical bugs that NI has acknowledged exist within this version of the product.


Not every issue known to NI appears on this list; it is intended to show the most severe and common issues that you may encounter and provide workarounds when possible. Other technical issues that you may encounter could occur through normal product use or system compatibility issues. You may find more information on these issues in NI’s Product Documentation, Knowledgebase, or Community.

Bug Number

Legacy ID




Legacy features – IO Variables and Functional Blocks – Are Not Supported on PXI LinuxRT

In DeviceNet Legacy example DeviceNet PXI Legacy.lvproj, deployment of 'Master Interface' project item on PXI LinuxRT fails with the error "The deployment plug-in for this item cannot be found. Verify the proper software is installed". 

On a new project, adding a 'Master Interface' under PXI LinuxRT is not supported and the following message is displayed "A connection could not be established to the specified remote device. Ensure that the device is on and accessible over the network, and that NI DeviceNet software is installed on the real-time target. If the device is a controller, ensure that it is not running in safe mode."


IO Variables and Functional blocks are legacy features. Consider switching to DeviceNet VI based solutions instead. Refer to DeviceNet Basic.lvproj example to understand how to use DeviceNet APIs to interact with external devices.

Reported Version:

NI-Industrial Communications for DeviceNet: 21.5

Resolved Version:



Feb 4, 2022

Final Time Issue Listed

Issues found in this section will not be listed in future known issues documents for this product.

There are currently no issues to list.

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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  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).