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Transfer of data from radio buttons to GPIB device

Question asked by Lostnuker on Feb 23, 2016
Latest reply on Mar 7, 2016 by Mike

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This might seem really silly but I cant get my radio buttons to transfer my desired output to my current source. I am connected to a keithley 6221, it talks to it and I can get it to output using write text "curr 1.0E-9" eol but when I put a terminal "A" on the direct I/O and place the line write text "curr", A eol I get an error from keithley? Any ideas?

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simonp Feb 24, 2016 12:12 AM
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post your code
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Mike Feb 26, 2016 2:16 AM
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It's probably just a formatting problem. One way to check your syntax is to use a simple formula box with your formula e.g. "curr " + A and using an alphanumeric on the output to see the result. Another is to start the I/O monitor. What you'll probably find is a simple missing space character ( required between the command and the parameter at least for SCPI ).

HTH,

Mike Watts
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Lostnuker Mar 1, 2016 7:14 AM
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Hey sorry took so long to post my code. Seems really simple if but this is a new language for me.
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- stepoutput.jpg167.6 KB
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- Mike @ Lostnuker on Mar 2, 2016 2:19 AM
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  As I suspected, it's probably a simple case of a missing space - please see attached example. This doesn't need any instruments and is a quick way of checking the syntax being sent to an instrument ( or use the I/O monitor as I mentioned before ).
  
  VEE understands engineering multipliers too, like 0.010n however, adding that to the example I found I needed to force it from being an Enum type... if you're interested, the formula
  "curr "+ToReal64(ToString(A))
  outputs
  curr 1.0E-11
  
  Mike
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  - Example debug syntax.vee4.3 KB
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  - Lostnuker @ Mike on Mar 2, 2016 10:04 AM
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    Thanks for the prompt reply. So I changed to line to of code to read "write text "curr"+A on the keithley 6221 it displays output as nano amps as it should but it displays error -111 Header Seperator Error? Any Ideas?
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    - Mike @ Lostnuker on Mar 3, 2016 12:51 AM
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      Space. Space. The final frontier? You need a space character after the second 'r'
      
      I don't know how else I can explain that. You're sending curr1 and you need to send curr 1
      
      Cheers, Mike
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      - Lostnuker @ Mike on Mar 6, 2016 12:37 AM
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        Hey thanks alot, I didn't see the space in your code. Now it works like a charm. Now to start acquiring data.
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        Mike @ Lostnuker on Mar 7, 2016 11:48 AM
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        Thanks for letting us know. It's something ( a space character ) we all miss out from time to time.
        
        Cheers, Mike
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Transfer of data from radio buttons to GPIB device

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