Hello, I am using the PM100D instrument, and I wrote the code. The code worked fine the first time, but the problem comes when I try to run it again; the PM100D initialize.VI gives an error. The error is "Specified type of lock cannot be obtained, or specified operation cannot be performed, because the resource is locked." I have to shut down the labview and open it again to run a second measurement. The question is, how can I run the code several times without having this error?

You shouldn't have to close LabVIEW to keep it working unless the references are screwed up. This can happen if you neglect to close them, OR if you open too many of them at once. I would try closing everything and rebooting your PC. After that your code with the INITIALIZE before the loop and CLOSE after the loop should work correctly.

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LabVIEW

Power meter

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Thanks guys, it works now perfectly.

Thanks for your replies and I appreciate your help.

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Glad you got it working. 🤓 I have been really pleased with Thorlab's products and really like the PM100D for its small size and versatility. Have Fun!

LabVIEW Pro Dev & Measurement Studio Pro (VS Pro) 2019

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LabVIEW

Power meter

Re: Power meter

Re: Power meter