Python library "nidcpower" to NI PXIe-4163 SMU returns error on session open "-1074135040: IVI: (Hex 0xBFFA0000) Unrecoverable Fail

[ChetKnu]

EXAMPLE PYTHON CODE:

import nidcpower

import nidcpower.errors

try:

    session = nidcpower.Session(resource_name='SMU1',channels='0')

    session.abort()

except nidcpower.errors.DriverError as e:

    print(f"DriverError: {e.code} - {e.description}")

except Exception as e:

    print(f"An unexpected error: {e}")

RETURNS ERROR:

-1074135040: IVI: (Hex 0xBFFA0000) Unrecoverable Failure

C:\Users\XXXX\Downloads>pip freeze
certifi==2025.1.31
charset-normalizer==3.4.1
click==8.1.8
colorama==0.4.6
debugpy==1.8.13
deprecation==2.1.0
hightime==0.2.2
idna==3.10
nidaqmx==1.0.2
nidcpower==1.4.9
numpy==2.2.4
packaging==24.2
python-decouple==3.8
PyVISA==1.14.1
requests==2.32.3
typing_extensions==4.12.2
tzdata==2025.2
tzlocal==5.3.1
urllib3==2.3.0

[santo_13]

" Unrecoverable Failure" is worrying.

Try resetting the card from NI MAX and try using the SMU from SFP (soft front panel) in InstrumentStudio, if it doesn't work even after several power cycles, reset, moving the card slot, the last option is to send the card to NI for repair or replace it.

[TobiasG]

Do you have NI-DCPower installed, or just the nidcpower Python module? You need both.

If you do have it installed, what version? Can you provide a Technical Report from either Hardware Configuration Utility or MAX?

[ChetKnu]

Thankyou for your reply.

I have several chassis' with qty 2 PXIe-4163 SMUs installed.

All of them work using the NI GUI and all of them work under .NET code.

We have staff here that would rather work in PYTHON for max flexibility.

The issue is likely the pedigree of installed NI software (albeit I have each system running the latest.

It bombs on opening the session, and all the variants of parameters have been tried.

[ChetKnu]

Thankyou for your reply.

As stated with the prior, everything works fine under the NI GUI and .NET code I've developed.

Issue is the python library nidcpower does not work.

It bombs on opening a session to the device.

I have a PXIe-6341 DAQ and that works fine using the nidaqmx python library.

All 3 of my system below have the issue using the python library.

SYSTEM 1:

PXIe-1084 Chassis

PXIe-8301 Thunderbolt

PXIe-6341 DAQ

PXIe-4163

PXIe-4163

SYSTEM 2:

PXIe-1083 Chassis

PXIe-8301 Thunderbolt

PXIe-6341 DAQ

PXIe-4163

PXIe-4163

SYSTEM 3:

PXIe-1083 Chassis

PXIe-8360 MXI

PXIe-6341 DAQ

PXIe-4163

PXIe-4163

[ChetKnu]

Thankyou for your reply.

I have both installed.

As stated, the NI InstrumentStudio controls the PXIe-4163s ok.

A custom developed app using .NET works as well.

Its the python wrapper library that does not work.

-Chet

[ChetKnu]

Attaching MAX report.

[kirsch]

You seem to be running a recent version of NI-DCPower, 2025Q1. That's good.

What version nidcpower Python module are you using?

How about your Python executable? Send us version, bitness (32-bit vs 64-bit) and confirm whether you got it through the Windows Store or not so we can rull out Session creation fails with Windows Error 0xc06d007f.

Have you ever been able to run this core on any system, or have you never been successful with it?