Error 200284??

[KowdTek]

Hi to all!

First, here's what I have.

pci-6024E

scb-68

labview 8.2

I'm trying to acquire data (rpm) from monarch speed sensor that gives a TTL 5-0vdc signal.

After creating the vi & tested I get this error 200284.

Also, do I need to use a voltage divider before measuring the data?

Any light will be appreciated.

Thanks!

FlipTek

[Nick_F1]

Hi FlipTek,

Thank you for posting on the National Instruments forum.

You don’t need a voltage divider before measuring the data because the analog range is -10v to 10v and the output of your sensor is TTL, so it can be read by our digital inputs or the analog inputs.  Are you using digital acquisition for reading the signal?

This might also be an issue for you if you are acquiring at low speeds.

Why Do I Get Error -200284 When I Set a Small Sampling Rate in DAQmx?

A good resource is going to http://www.ni.com/ and doing a search for your error number on the top right.  That will bring up several knowledge base articles or tutorials for whatever issue you are searching.

[KowdTek]

I checked the link you posted and it makes a lot of sense. I will try putting -0 as a timeout constant to stop that error at a lower speed.

Thank you very much & I will post the results.

[s-p]

i am trying to get rpm by monarch tach and i am getting the same error.any help?

[Ryan_T]

Hi s-p,

Have you tried all of the troubleshooting steps in the this KB? The error is a DAQmx driver error, which means that we are most likely not setting up the task correct.  What language are you using to program your DAQmx task?  What DAQ device are you using?

Thanks

[s-p]

Hi Ryan

i Tried but they didnt work.please say me how to set up the DAQmx for counting input and frequency?my DAQ board is USB-6229 M series.and i dont know what you mean by language for programming DAQmx.i just used one of the samples for counting input and frequency which has been posted in this forum and one form example finder

[s-p]

two wires are coming out of the Tachometer ,i changed their connection ,i mean i connected another one as ground and then the error vanished .but i'm still getting some data which are not the actual frequencies.any help?

[s-p]

even when i turn the tachometer power off .i still get these data.

[Ryan_T]

Hi s-p,

If you are receiving values when the tachometer is off then it sounds like you are getting the frequencies of the noise around you.  Have you checked the output of the tachometer with a multimeter to make sure that it is outputting the correct values?  I assume that you are using LabVIEW as your programming language, so what examples are you trying to use?

Thanks