Hi, I am using a Particle measuring system instrument Lasair III 110 laser particle counter in my testing. The communication of this instrument is Serial Rs 232. I made a simple LabVIEW to control it for sampling and to collect the testing data and I have attached my code here. The serial command for starting sampling is "SS" and the serial command for transmitting the last data sample (i.e. latest time). is "TL". Data is sent in standard CSV (comma separated value). The sampling time is 1 min. However, I cannot get any testing results from the "TL" command. It only gave me "SS" in the indicator of read buffer. When I used "YAT" for the command "SS" and "TL", I am able to get the latest data sample. Really need help to figure out how to get the latest testing results and extract the useful test results to do some calculation by using "LabVIEW". Thank you very much.

Bingji wrote: I want the forth line in the screen capture as the result. From what I can tell from that screen capture, it looks like you have to send another TL and then the results will come (after the echo).

Instrument Control (GPIB, Serial, VISA, IVI)

Read data from a RS 232 Serial port

Solved!

Author

Yes.

It works now after add one more "TL" and "Echo" and "Response".

Please see the working code in the attachment.

Thanks.

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Instrument Control (GPIB, Serial, VISA, IVI)

Read data from a RS 232 Serial port

Re: Read data from a RS 232 Serial port