Need an example about Yokogawa 7651's labview VI

[walkinwater]

hi, highly respected gurus:

           I am a new guy of labview, and now I need to use Yokogawa 7651 and Keithley 196 to make an I-V curve to perform the restistance measurment. That's to say, I need to tell tell my Yokogawa 7651 to produce an voltage sweep from -2 volt to 2 volt, the voltage step is 0.1 volt, and the time between two suceesivly steps is 100 ms.

           Tried to download the Yokogawa 7651 labview driver from NI website, but it seems a bunch of subvi. And I didn't manage to use those tiny vi's to  achive my voltage sweep. Are there anybody have experience of using labview to control Yokogawa?

           Thanks in advance.

           Best regards.

[nyc_(is_out_of_here)]

Many LabVIEW users seem to forget that it is possible to get instruments to do what you want by using MAX to interact with your instruments using SCPI commands.

Do you understand what commands are necessary to get the instruments to do what you want?

Have you read the User's Manual and the Programmer's Manual?

[walkinwater]

i read the user manual of Yokogawa carefully, it supports only RS 232. More worse, the MAX doesn't recognize Yokogawa at all, i.e., no repsonse from the IDN command.

[Dennis_Knutson]

MAX is not supposed to recognize serial instruments. It should recognize the com port. Be sure to send supported commands with the correct termination character.

[nyc_(is_out_of_here)]

Not all instruments support *IDN?  especially the older ones.

If it is RS232, you could try communicating to it using Hyperterminal.

[yamaoka]

yokogawa 7651 don't support 488.2 and SCPI command

for example
"F1" means "select DC Voltage function"
"R2" means "output range is 10mV"
"S5E-3E" means "output value to +5.00mV"
"O1" means "output enable"
"E" means "execute"

You can get japanese manual from "http://www.yokogawa.com/jp-ymi/tm/Bu/7651/".
    
Sorry I never used Labview is so can't advise

[K C]

Hi,

I use several 7651 in testsetup's without any problem.

Standard interface for the 7651 is IEEE (GPIB)

Do you have all the manuals ? You can download it here.

I can give you the VI I work with tomorrow.

[K C · Accepted solution]

Here are the VI's I use to control the 7651. With the VI '7651 Test' you can control 2 7651 instruments with a virtual front panel.

[walkinwater]

hi, Yamaoko:

         It's a pity that I cannot read Japanes. But however, thanks for your reply.

[walkinwater]

hi, K C:

         Thanks so much. I used the VI you posted. It does control the Yokogawa. The driver provided from NI doesn't work at all ( I guess that one doesn't use VISA)

          I will try to use the VIs that you provides to build a high precision resistance meter, i.e., I will ask the Yokogawa to make a DC voltage sweep from 0 to 1.2 volts (0.1 volt each step). I have only one Yokogawa 7651, I don't know whether I can use Yokogawa 7651 output voltage to the DUT and measure the currrent sinked by the DUT simutaneously ( I guess not). So I think I should use another current meter (I have another Keithley current meter)

          Thanks again.