Instrument Control (GPIB, Serial, VISA, IVI)

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There is a way to use Agilent 34401a with RS232 in Labwindows?

I need to use Agilent 34401a with RS232 in Labwindows/CVI. I try to serach a solution in the forum, and I saw that exist a way to use the 34401 with Labview, but no solution to use with Labwindows. There is a way to setu the GPIB driver to use with Labwindows or another driver to use?
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Hi Gilson,

Your best option is to request that driver on the Instrument Driver Network.

Best of luck with this project!
Matt S.

LabVIEW Integration Engineer with experience in LabVIEW Real-Time, LabVIEW FPGA, DAQ, Machine Vision, as well as C/C++. CLAD, working on CLD and CLA.
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I found the 34401A IVI driver, however its README text just claims GPIB operation, no mention for Serial.
Because the driver uses VISA for instrument I/O and the SCPI command is same for GPIB/Serial, it may work with Serial too.
 
If the above driver does not work with Serial, the 2nd try is use Agilent34401 IVI-COM driver, which can be downloaded Agilent site.  Its README officially claims GPIB and Serial compatibility.  It may be bit hard to use the IVI-COM driver directly from CVI, but relatively easy to use it through the IVI-C IviDmm class driver because it is the same as typical IVI-C or CVI driver format.  (However, interchangeable approach is needed.)  This also requires to install IVI Class COM Adapter DLLs, which is found at the following thread:
 
 
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The other option is to just modify the existing driver for RS-232 or setup the serial port prior to using any calls in the driver. The only difference in the LabVIEW driver between GPIB and RS-232 that when the VISA resource name is a serial device, the com port baud rate, parity, etc, is set and then the VISA properties ASRL End In and ASRL End Out are set to termchar so that a termination character is automatically appended to each command. There is also a VISA Set I/O Buffer Size function with a a mask value of x30 and a size of 4096.
 
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Yup,

Dennis is correct. There are a few steps you'll have to add to get the GPIB drivers working for RS-232, but it can certainly work.

Regards,
Matt S.

LabVIEW Integration Engineer with experience in LabVIEW Real-Time, LabVIEW FPGA, DAQ, Machine Vision, as well as C/C++. CLAD, working on CLD and CLA.
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how can i create an interface between Agilent 34401A  with GPIB in labwindows/CVI that can communicate with my DMM and i can send commands that can read them pllllzzz help me

note i get the GPIB connected via NI MAX

nimax.PNG

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Download the IVI-C driver that is linked above. This is s very old thread but the link is still valid.
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i already download it but i can't seem to know the step to creat an interface to communnicate with Agilent 34401A plz some one know the step that i need to do in order to create this interface so i can write and read DC voltage ......???????

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That's really a basic CVI question, which I don't have at the moment. You should be able to load the fp if you installed the driver correctly.
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the driver has been installed correctlly  and the fp file correspond to DMM  Agilent 34401A is been showen and i don't know the next stap wich will be what???fp.PNG

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