Control 34401A Multimeter

[Maloya]

Using the Agilent 34401 Driver with a older HP 34401A Multimeter

Executing the Read Single Measurment.vi

> 2 Error on the Multimeter:

1. RS-232 framing error and
2. Query INTERRUPTED

A command was received which sends data to the output buffer, but the

output buffer contained data from a previous command (the previous

data is not overwritten). The output buffer is cleared when power has

been off, or after a *RST (reset) command has been executed

Executing the Configure Measurement.vi

Two Error Messages on the VI and the Query Interrupted Error on the Instrument:

1. Maybe the most important: 1074004007- The connected instrument does not support the selected measurement function. (I’ve selected DC Voltage!)
2. Error -1074003950 occurred at Agilent 34401.lvlib:Extended User Data.vi

Possible reason(s):

Reference Not Found: (xBFFC0012) Cannot retrieve user data for the given resource name as there was not data associated with the resource name. Before you can read data, you need to write the user data using the Write Data action of this User Data VI.

Complete call chain:

     Agilent 34401.lvlib:Extended User Data.vi

     Agilent 34401.lvlib:Configure Measurement.vi

[Roland_Win]

Are you sure you copied the drivers from the .zip file to the right directory?

http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=014E7F05D12C6F8BE0440003BA7CCD...

http://www.ni.com/devzone/idnet/inetinst.htm

[Maloya]

Yep, I've checked it.

I've contacted the instrument driver support. Maybe the firmware of my DMM is too old.

[Roland_Win]

Hi,

I want to keep this thread going. There are still some questions that I can ask to make sure all the information to solve this issue is posted in the forum:

1. Which VISA driver are you using? Link to the current driver:http://www.ni.com/download/ni-visa-5.4/4230/en/
2. Which OS are you using?
3. Which Version of LabVIEW are you using?

[Maloya]

Danke Roland

Ni- VISA 14.0.1

Ni- VISA Runtime  14.0.1

Windows 8.1 64 bit

labview 2014 f1 32 bit

 What about the VISA 5.4? I've installed the software from MyRIO and CompactRiO. And LabVIEW regulary checks for updates.

But I will try it.

[Roland_Win]

Hi,

What exact rs232 converter are you using are you sure it is compatible with windows 8.

I found this post on the Microsoft Forum:

“the Aten UC232A uses a prolific chip and, if the chip version is not the PL2303HXD it will not be supported by Windows 8.

You must use win 7 or XP and download a small tool supplyed by prolific to check the chip version. this tool is supplyed when you download the win7/XP driver.”

- rui.orfao on Microsoft Forum, January 6, 2013

http://answers.microsoft.com/en-us/windows/forum/windows_8-hardware/a-problem-with-aten-uc232a-seria...

[Maloya]

It states No PL2303 chip installed.

And referring to the Driver. I've downloaded it but most of the parts I couldn't installed (higher version installed already) and afterwords it still  doesn't work.

[Maloya]

Nevertheless Like I Stated using the VISA Interactive Control Basic commands like IDN? or Remote control worked. Doesn't this imply that the converter is working?

[Dennis_Knutson]

Are you first calling the initialize function? What about when you just run that and request the id query and a reset?

[Maloya]

Using the Simple Serial.VI (Example) the IDN Query works. The provided NI instrument driver doesn't.