export_field_file only have 0 time data

[climaxburden]

In the case of other time data are selected to save, pyaedt export_field_file can only export time 0 data, but can not export other time data.

        success = maxwell_2d.post.export_field_file(

    quantity="Mag_H",
    solution="Setup1 : Transient",
    variations=None,
    output_file=fld_file,
    assignment="AllObjects",
    objects_type="Vol",
    intrinsics={"Time": "0ms"},
    phase=None,
    sample_points_file=None,
    sample_points=None,
    export_with_sample_points=True,
    reference_coordinate_system="Global",
    export_in_si_system=True,
    export_field_in_reference=True,
)

Error：
PyAEDT INFO: PostProcessor class has been initialized! Elapsed time: 0m 0sec

PyAEDT INFO: PostProcessor class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Post class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Exporting 'Mag_H' field. Please be patient.
PyAEDT ERROR: **************************************************************
PyAEDT ERROR: File "E:\PycharmProject\JQXXProject\pro1\main.py", line 133, in
PyAEDT ERROR: success = maxwell_2d.post.export_field_file(
PyAEDT ERROR: AEDT API Error on export_field_file
PyAEDT ERROR: Last Electronics Desktop Message - [error] script macro error: error in performing operation. (05:11:39 pm jul 17, 2025)

PyAEDT ERROR: Method arguments:
PyAEDT ERROR: quantity = Mag_H
PyAEDT ERROR: solution = Setup1 : Transient
PyAEDT ERROR: output_file = E:\AnsysFile\Electromagnetism\Maxwell\2025_10WMD3000SDDPMSG\01215156666.fld
PyAEDT ERROR: assignment = AllObjects
PyAEDT ERROR: objects_type = Vol
PyAEDT ERROR: intrinsics = {'Time': '1ms'}
PyAEDT ERROR: export_with_sample_points = True
PyAEDT ERROR: reference_coordinate_system = Global
PyAEDT ERROR: export_in_si_system = True
PyAEDT ERROR: export_field_in_reference = True
PyAEDT ERROR: **************************************************************

[gmalinve]

Hi @climaxburden,

It's difficult to say what's your problem without seeing the AEDT file and your whole code snippet.
Are you sure your solution is correctly analyzed?
Have you looked at this examples in PyAEDT library of examples? https://examples.aedt.docs.pyansys.com/version/dev/examples/low_frequency/general/field_export.html this does exactly what you are trying to do + it also calculates the field solution for each time step (retrieved with the get_solution_data).

Hope this helps,

KR

Giulia

[jvela018]

@climaxburden ,

Without the rest of the script, it's impossible to know what you're attempting to do. Please, reopen the discussion if you'd like to elaborate on the issue.

/jvela018

[climaxburden]

I tried to start the extension at the end point, but nothing happened. I changed the version number of my AEDT. I ran the end point after Maxwell opened, but the extension still didn't pop up.

[jvela018]

@climaxburden ,

Will you please provide further information on how you're opening the extension?

Are you opening directly via AEDT or via an IDE?

/jvela018

[jvela018]

@climaxburden ,

Is this the same discussion as in: #6650 ?

Note, that to extract time dependent data you need to add the "variation" to the field plot, to address the time steps of interest: https://examples.aedt.docs.pyansys.com/version/dev/examples/low_frequency/magnetic/transient_winding.html#Create-output-and-plot-using-PyVista

Here's the documentation on export_field_file: https://aedt.docs.pyansys.com/version/stable/API/visualization/_autosummary/ansys.aedt.core.visualization.post.post_common_3d.PostProcessor3D.export_field_file.html

/jvela018

[jvela018]

@climaxburden ,

Were you able to use the suggestion provided?

BR,

/jvela018