Ferret,
Unfortunately, the LabVIEW driver in
IDNet for the Keithley 220 is unsuitable to be converted into a DLL. It is a single VI for a basic configuration of the instrument.
Keithley distributes a more recent
LabVIEW driver that you may be able to convert into a DLL. You would need to build a shared library in LabVIEW using the "Build Application or Shared Library (DLL)..." option from the Tools menu.
Alternatively, you can submit a request for a LabWindows/CVI instrument driver through our
request database. Your request may be consid
ered for development. We try to develop instrument drivers according to popularity. Unfortunately, we cannot develop instrument drivers for all the requests we receive.
If you would like to try developing your own instrument driver, we have documentation, model instrument drivers, and driver templates to help you in your development. You can find this information on our web site http://www.ni.com/devzone/idnet/development.htm.
Thanks,
Bankim Tejani
National Instruments