labview- datalog/output file

[mekdeng]

Thank you Dev,

I tried to use the VI you sent me and it is writing the output to a text file but the output its showing is all zeros even though I am getting  a strain around 7e-6 (i.e 7 micro strain). Is there something wrong with my VI.. or may be I am doing some thing in the process? would you be knowing anything about it?

Thank you

[devchander]

Hi Hari,

That's simple

just choose suitable format to write to spread sheet file (%.8 f should do)

look in attached VI( modified to write continous data,  column wise, at %0.8 f )

Regards

Dev

[Sreedhar_T]

Hi,

You can as well convert the numeric data into exponential string (in case of acq and save.llb)... that will give you the exact values including the precesion (you can define).

[mekdeng]

Thank you very much Dev, your modified VI worked out very good. I really appreciate your promptly help.

And if you dont mind there is one more thing I need here. How do I choose more than one physical channel, (in channel parameters) and to write the all  those strain readings w.r.t  time to an external file. Current VI only allows me to choose one physical channel at a time.

Hope you can help me in this issue too..

Thank you

[mekdeng]

Guess I could do that too..

Thank you Sreedhar

[Sreedhar_T]

Don't worry, I have modified the VI wrt to exponential storage... go ahead and enjoy coding. As per increasing the number of channel from more than one, it has been incorporated as well.

Find the vi attached.

Sreedhar.

[mekdeng]

Sreedhar,

I dont know how to use your .llb file as I told you earlier I am very new to LabVIEW. Could you please explain me how to use your .llb attachment.

Thank you

[devchander]

You can indeed acquire from more than one physical channel using this VI.

This vi can read data from more than one physical channel.

The same Vi also saves data from multiple channels column wise into the file.

just write the configured Physical channel ID's in the Physical channels list with a comma seperator as shown in attached VI

Well, if you want to enter different Bridge configuration parameters for each channel, it also can be done.

If you need this, let me know and i will explain how to do it.

Regards

Dev

[Sreedhar_T]

llb means library....so its the library of VI that are used to write the program. So, just say open from your labview panel and browse the path of the .llb. Once you get it, select the vi on the top... it must be stored in the same name that you have sent.

[mekdeng]

Both you guys have been very useful to me.

Right now those VIs are working very good. I'll try to work with them and if have any more questions then I shall get back to you guys.

Once again I thank you guys

Hari