I am new to Labview. I wanted to control Keithley 2000 multimeter and 6220 current source by labview 8.6 with GPIB. This is to study the hall effect in thin films. Can anybody help me in this regard? How to create VI?
You can download the drivers and VIs for your device if they are available from NI. Typically there are VIs for initializing, resetting, applying settings, read/write, etc.. The device should also come with a manual, telling you all the available functions of the device, as well as programming codes or support for integrating LabVIEW.
http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=014E6EF883B9743DE0440003BA7CCD71
Above link gives the driver for DMM,
http://sine.ni.com/apps/utf8/niid_web_display.model_page?p_model_id=5812
The second link is for the 6220 series current source.
It works with GPIB.
First of all, you will need to put all your devices and the LabVIEW PC on a serial RS485 network. For example, you can go from a PC serial port (which is RS232 compatible) to a RS232 to RS485 converter, then hook your devices directly on the 485 side of that converter, and using their drivers assign them node identities, etc (using some configuration software). Once you "built" your RS485 network, you can get to program in LabVIEW using VISA as indicated by people that answered before me.
Another way, since serial ports are obsolete these days, is to buy directly an RS485 serial card for your PC and hook your current source and DMM directly there.
We have given up on Labview in favor of DAQ2GO. It's much less expensive, more flexible, and programs directly in Excel. One worksheet, for example, provides the ability to programatically define the behavior of all the ports in any way one chooses.See the Youtube videos for some examples. We also use it as a programmable controller instead of a servo controller. Less expensive, easier to use. Industrial grade reliability.
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