Timing runs at 1 sample per second with simulated DAQ, but runs slower when connected.

[JÞB]

I guess I need to see my laptop:D

I'm looking for the Task Configuration BD as an image.

[LVIEWPQ]

Hoping this is what you're after.

[JÞB]

OK,

Time to show you how a pro does it

With a well commented BD and developer comments.  Took me 15 minutes.  The Task timing is assumed to be single sample on demand.

Developed in LabVIEW 2023 not backsaved 

[LVIEWPQ]

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@JÞB wrote:

OK,

Time to show you how a pro does it

With a well commented BD and developer comments.  Took me 15 minutes.  The Task timing is assumed to be single sample on demand.

Developed in LabVIEW 2023 not backsaved 

---

When I use a file dialog to populate a TDMS path I get the following error:

If I use a filepath, I get -201309

Using the highlight execution, the error occurs in the DAQ read, and it appears that both reads get the same channel for some reason. 

No modification to the posted VI so not sure what's going on? 

 

[GerdW]

Hi LVIEWPQ,

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@LVIEWPQ wrote:

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No modification to the posted VI so not sure what's going on? 

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Use two TDMS files for two DAQmx tasks: each task wants to have exclusive access to its TDMS file…

[LVIEWPQ]

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@GerdW wrote:

Hi LVIEWPQ,

---

@LVIEWPQ wrote:

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No modification to the posted VI so not sure what's going on? 

---

Use two TDMS files for two DAQmx tasks: each task wants to have exclusive access to its TDMS file…

---

Even with 2 different logfiles, I get Error 201309.

Followed : https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000001DmwnCAC&l=en-GB which hasn't resolved the issue. 

 

[GerdW]

Hi LVIEWPQ,

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@LVIEWPQ wrote:
Even with 2 different logfiles, I get Error 201309. 

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Error -201309: "Unable to write to disk. Ensure that the file is accessible."

Which filepaths do you use?

(On which target is your VI executed?)

[LVIEWPQ]

I have tried

"C:\Users\lharris\Desktop\Pressure logfile.tdms"
"C:\Users\lharris\Desktop\Temperature logfile.tdms"
&

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@GerdW wrote:

Hi LVIEWPQ,

---

@LVIEWPQ wrote:
Even with 2 different logfiles, I get Error 201309. 

---

Error -201309: "Unable to write to disk. Ensure that the file is accessible."

Which filepaths do you use?

(On which target is your VI executed?)

---

"C:\Users\lharris\Desktop\Plogfile.tdms"

"C:\Users\lharris\Desktop\Tlogfile.tdms"

[JÞB]

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@GerdW wrote:

Hi LVIEWPQ,

---

@LVIEWPQ wrote:
Even with 2 different logfiles, I get Error 201309. 

---

Error -201309: "Unable to write to disk. Ensure that the file is accessible."

Which filepaths do you use?

(On which target is your VI executed?)

---

I have a sneaky suspicion that the Task configurations are not 1 sample on demand.

Show a screenshot of the DAQmx Wizard.  Just right-click the Task constants and show the configuration page.

[LVIEWPQ]

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@JÞB wrote:

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@GerdW wrote:

Hi LVIEWPQ,

---

@LVIEWPQ wrote:
Even with 2 different logfiles, I get Error 201309. 

---

Error -201309: "Unable to write to disk. Ensure that the file is accessible."

Which filepaths do you use?

(On which target is your VI executed?)

---

I have a sneaky suspicion that the Task configurations are not 1 sample on demand.

Show a screenshot of the DAQmx Wizard.  Just right-click the Task constants and show the configuration page.

---

   

Everything appears to be set up correctly?