Unable to set BridgeCfg after channel creation using DAQmxSetAIBridgeCfg

[manisha.singh]

Hello,

I am unable to set the Bridge Configuration of NI 9219 device to any other configuration than the one specified during channel creation time. I am using the DAQmxSetAIBridgeCfg function.

The error that I get does not provide any hints to the issue:

    DAQmx Error: NI Platform Services:  A selector - usually of an enumerated type -
    is inappropriate or out of range. The operation could not be completed as speci
    fied.
    Channel Name: cDAQ2Mod2/ai0
   
    Task Name: _unnamedTask<0>
   
    Status Code: -50003

Please see the attached C-file that reproduces the issue. Note that I get the error message when I try to read the BridgeCfg after setting it to some value.

* OTHER DETAILS:
* Requires NI 9219 physical hardware.
* Does not reproduce with a simulated device.
* Reseting does not resolve issue.

* Running on 64 bit, Win7 platform.
* NIDAQmx Driver Version: 9.2.3f1.

Thanks!

Regards,

Manisha Singh

The MathWorks

[Sean_F]

Hi Manisha,

This is strange indeed. I couldn't replicate the behavior in LabVIEW but I do see that error in CVI. I'll look into this and let you know when I have an update. In the meantime, you should just create your channel with the bridge configuration you plan to use.

Regards,

[manisha.singh]

Hi Sean,

Thanks for looking into this.

Yes, my current workaround is to recreate the channel. Let me know if you need any other information.

Regards,

Manisha

[Voon]

Hi there,

I face the same problem with you. When i choose the voltage, its work. But the pessure does not and showing me the error. Find the solution?

Lookin forward to Hearing from you.

Best Regards,

Voon Loong 

[ZachHindes]

Hi Voon,

There was a known issue found with NI-DAQmx 9.1 where the 9219 didn't properly support the new Bridge measurement types that would cause that error code.  This was fixed in NI-DAQmx 9.1.1.

I don't know of any reason why it would happen in NI-DAQmx 9.2.3; I'll investigate further.

[ZachHindes]

I was able to reproduce the original reported issue in NI-DAQmx 9.3.  I have filed CAR 299983 to R&D to investigate and fix the issue.

Thanks for reporting this, and I apologize that this wasn't investigated fully the first time.

[ZachHindes]

Someone beat me to it!  CAR 299887 was filed.

[Voon]

Hi Zach Hides,

Thanks for yor resopnce. Thats means I have to install ad upgrading to NI DAQmx 9.1.1.

Anyway, do appreciate.

Best Regards.

Voon Loong

[manisha.singh]

Hi Zach ,

Thanks for providing the CAR number.

Regards,

Manisha

The MathWorks

[WenLoong]

Hi,

Can you do me a favor? I am doing on the pressure measurement using Labview. I have attached a file with regards to the procedure I did for your review. Can you check whether I am doing it correctly?

Your guidance is much appreciated.

Best regards,

Voon Loong