Request IVI driver for NI 6527 card

[Pako]

Does anybody have a piece of sw like this? Interested on C IVI driver for NI 6527 based on traditional DAQ library. Tanx.

[JohnM 64]

Hi Pako,

Unfortunately, we do not have an IVI driver for the PCI-6527 available on the Instrument Driver Network. In fact, IVI drivers are not designed for virtual instruments that are used in PCI or PXI slots, but rather for handling communication between the computer and external instruments. They use VISA in order to communicate over the serial or GPIB bus, usually. Also, IVI drivers are only for instruments that fit within one of the eight defined classes, including scopes and DMMs. You can obtain more information on IVI drivers at www.ni.com/ivi

National Instruments provides the NI-DAQ drivers which provide functions that you can call from C in order to program your 6527 to do exactly what you need it to do. You can get some help on how to use these functions on the Traditional NI-DAQ Function Reference Help that is installed with the NI-DAQ driver. I recommend using these functions, and then if you run into troubles in your programming, ask a specific question to the forum. There are many users that check these posts frequently, and are more than happy to help out with single, specific issues.

Good luck with your programming!

john
Applications Engineering

[JohnM 64]

Sorry about the broken link in the above post... I must have been typing to quickly. Here is the correct link. You can also get to the Instrument Driver Network by going to www.ni.com/idnet.

john

[Pako]

john,
I agree with you about the purpose of IVI drivers, being oriented to instruments over GPIB, RS232 and VXI; by the way there are some IVI drivers by NI for instruments over PXI. My main concern on searching for this kind of driver is their support of multithreading on TestStand.
Regards.

[JohnM 64]

Hi again Pako,

You are correct--I'm sorry for implying that there are no IVI drivers for devices in the PXI or PCI form factor. The IVI technology has been developed so that programmers can use the same program for any IVI compliant device within the class that the program was designed for. For instance, I could write a program for the NI 5401 using the waveform/function generator IVI class. If for some reason I wanted to use a different function generator, I should be able to use the same code with only slight modifications... the overall program should still work the same.

Because this is the purpose of the IVI drivers, we have IVI drivers available for our products that fit into one of the eight IVI classes (DMM, oscilloscope, arbitrary waveform/function generator, DC power supply, switch, power meter, spectrum analyzer, and RF signal generator). Because the 6527 is a digital i/o card, it does not fit into one of the eight IVI classes, and therefore there will be no IVI driver for this device. If you need any help using the DAQ driver for this card, feel free to post again to the DAQ discussion forum, and myself and the rest of the community will be happy to help you out!

john