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calculated filter channel does not always display
Ben-Mayworm
10-30-2014 02:40 PM
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I'm having a problem with applying a lowpass filter to a channel, I had the channel setup and it was working fine. I made some changes to the sytem definition file and re-deployed and the channel no longer worked. I have tried increasing the low cutoff frequency and it started to work when I got to a value of 20. However, after re-deploying the project again it quit working. I have tried to change the order # and at first it worked but every time I make a change to the system defifnition file and re-deploy it stops working. I have also tried to delete the channel and re-create it but I run into the same problem. The wierd thing is that I have other channels that are being filtered as well and I have no problems with them. Has anyone experienced intermittent problems like this?
10-31-2014 06:07 PM
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Hi Ben-Mayworm,
Thanks for getting in touch with us.
What version of NI-VeriStand are you using?
What hardware are you using?
Are you using any drivers in your project?
Are you able to recreate this issue on another computer? Or with a different target?
Regards,
Applications Engineer
National Instruments
11-03-2014 11:34 AM
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Hi Joel,
I am using a cRIO 9074 with Veristand 2013.0.1. I am only having a problem with the 9411 module which is setup to measure a period, the period is converted to a frequency and then fianlly converted to a real number. I have not been able to try it on a different computer or target, I was hoping to get some advice on things to try that are not so in depth first.
11-06-2014 10:08 AM
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Hi Ben-Mayworm,
Are you able to isolate the issue? Does it happen with an new project that just looks at the NI 9411 module?
Also, if you can post a zip of your VeriStand project, I may be able to try it out here.
I would also suggest trying it with a different PC and target as well (if this is possible)
Let me know how that goes!
Applications Engineer
National Instruments
Jarrod_S.
11-06-2014 10:17 AM
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Can you describe what you mean by "not working"? Is the calculated channel value always zero? Or always the unfiltered value?
National Instruments
11-11-2014 03:10 PM
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when it doesn't wotk it will display NaN
