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NI-DCPower 21.3 Known Issues

Created Jun 22, 2023

Overview

This document contains the NI-DCPower known issues that were discovered before and since the release of NI-DCPower 21.3. 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

Description

Details
1024555

No device names appear when initializing a session with NI-DCPower on NI Linux Real-Time Targets

When selecting a resource name with niDCPower Initialize With Channels.vi in LabVIEW with a LabVIEW version prior to 21.0 on an NI Linux Real-Time target, the drop-down menu for selecting resources appears empty and you cannot select a device that is in your system.


Workaround:

  1. Manually enter the resource name for the device you want to use. Use NI Measurement and Automation Explorer (NI MAX) or NI System Configuration software to retrieve the resource name for any devices in the system. Or
  2. Use LabVIEW version 21.0 or later.

Reported Version:

NI-DCPower 20.5

Resolved Version:

N/A

Added:

Sep 7, 2020
1173335

Simulated NI-DCPower devices may return error -2147220719 while running sessions

Occasionally simulated NI-DCPower devices running on an NI Linux Real-Time target will return error -2147220719 during a session. This error can cause some simulated NI-DCPower devices to stop responding. This is only an issue for simulated devices.


Error -2147220719: The client process has been disconnected from the configuration server. If this problem persists, please note the steps you performed that led to this error and contact technical support at http://ni.com/support

Workaround:

Reboot the NI Linux Real-Time target. 

Reported Version:

NI-DCPower 20.5

Resolved Version:

N/A

Added:

Jan 8, 2021
1663695

On Linux, Independent Channels are not functional in non-LabVIEW applications

Using niDCPower_InitializeWithIndependentChannels in C or creating a Session in Python with independent_channels=True (the default) will generate an error that looks like the following:

-1074097808: Could not load the dynamic library.

Workaround:

  • Use niDCPower_InitializeWithChannels in C
  • Create a Session with  independent_channels=True in Python 

Reported Version:

NI-DCPower 20.7

Resolved Version:

N/A

Added:

Oct 20, 2021

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 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).