topic How can I detect an instrument using LabView? in LabVIEW

How can I detect an instrument using LabView?

hello man — Thu, 17 Dec 2009 20:18:05 GMT

Hello all,

I'm new in using LabView, and I want to know how to detect an instrumnet using LabView? I have an ESP301 from Newport and I want to controll this device uisng LabView.

Best,

Re: How can I detect an instrument using LabView?

Broken_Arrow — Thu, 17 Dec 2009 20:29:09 GMT

It depends one the interface: RS232, USB, GPIB.

Re: How can I detect an instrument using LabView?

hello man — Thu, 17 Dec 2009 20:31:26 GMT

Hello Broken Arrow,

Thank you for your response. I'm using the RS232 interface.

Thanks,

Re: How can I detect an instrument using LabView?

Broken_Arrow — Thu, 17 Dec 2009 20:37:26 GMT

THEN you need to:

Look at the LabVIEW examples for serial port communication. Using VISA to read and write.
Hookup a loopback connector to your computer and practice send commands and receiving them back on the screen.
Then, BEFORE you try to use LabVIEW to talk to your motor controller, use Hyperterminal or any other terminal program where you can easily send commands to the device. When this starts working, move back to LabVIEW.
Start writing code and check back here.
Don't forget to send the correct termination character.
Don't forget to send the correct termination character.
Don't forget to send the correct termination character.
Don't forget to send the correct termination character.
Don't forget to send the correct termination character.
Don't forget to send the correct termination character.

Re: How can I detect an instrument using LabView?

hello man — Thu, 17 Dec 2009 20:44:31 GMT

Thanks a lot. I'll try that.

Best,

Re: How can I detect an instrument using LabView?

AnalogKid2DigitalMan — Thu, 17 Dec 2009 21:27:09 GMT

Also- don't forget to send the proper termination character(s) :).

-AK2DM

Re: How can I detect an instrument using LabView?

hello man — Thu, 17 Dec 2009 21:30:26 GMT

Thank you.

I'm sorry, but what do you mean by that? I just installed LabView and have not finished the manual yet. Do you guys recommend any starting step for me to learn LabView? I mean which first manual from the available manuals I need to start with first.

Thanks,

Re: How can I detect an instrument using LabView?

pallen — Wed, 22 Apr 2026 00:07:29 GMT

http://www.ni.com/academic/labview_training/

https://www.ni.com/docs/en-US/bundle/373427f/resource/373427f.pdf

From the main NI page, try things like "getting started labview" or "labview tutorial".

Also, have a look on YouTube for LabVIEW stuff.

The Example Finder is also a great way tool.

Re: How can I detect an instrument using LabView?

F._Schubert — Thu, 17 Dec 2009 21:57:44 GMT

Just go ahead and don't feel confused, BUT: MIND THE TERMINATION CHAR.

Depending on your OS and the Instrument, the Termination Char may consist of /CR (Carrige Return) and/or /LF (Linefeed), propably it is even a setting of the instrument. Most users have no problem communicating with the instrument and no problem to write the correct LV code but just don't append the right termination chars in the LV code, that is the 99% the problem you will face.

So to say, you will simply get it solved by permutating /n/r. (that is not correct, just try CR, LF, CR+LF).

Felix

Re: How can I detect an instrument using LabView?

hello man — Thu, 17 Dec 2009 22:52:27 GMT

Thank to you all.

Best,

Re: How can I detect an instrument using LabView?

hello man — Mon, 28 Dec 2009 20:25:27 GMT

Hello,

I can't find the right terminating character. I tried CR/LF and LF as terminating characters for the ESP301, but it didn't work. Is it possible that I need to find other terminating characters?

This is the error the I get:

Failed to open a session with the selected instrument.
Error message : Insufficient location information or the device or resource is not present in the system.
VISA Status code : bfff0011

Thanks,

Re: How can I detect an instrument using LabView?

Dennis_Knutson — Mon, 28 Dec 2009 20:31:30 GMT

The error has nothing at all to do with a termination character. As it states, the resource you have selected is not present. Exactly what did you select for the VISA resource? One of the basic features of the VISA resource control is that you can click on the little arrow on the right side and select from the list presented. The items in the list are the available resources.

Message Edited by Dennis Knutson on 12-28-2009 01:31 PM

Re: How can I detect an instrument using LabView?

J-M — Mon, 28 Dec 2009 20:31:46 GMT

Could you post your Vi.

Re: How can I detect an instrument using LabView?

hello man — Mon, 28 Dec 2009 21:16:17 GMT

Hello,

Please find the attached vi file.

Thanks,

Re: How can I detect an instrument using LabView?

Dennis_Knutson — Mon, 28 Dec 2009 23:56:01 GMT

And what com ports are listed in MAX?

Re: How can I detect an instrument using LabView?

EMotts — Tue, 29 Dec 2009 06:22:15 GMT

For the ESP-301, CR is the correct termination character.