Resource name confusing

[jacky Wang]

    I'm very confusing about the resource name when using vi in LabVIEW, sometimes, the resource name is in form of PXI1Slot15, sometimes it's in the form of DAQ::5::INSTR and others just a number. I don't know what's their differences.Also, I don't know the meaning of PXI1Slot15, what's meaning of 1 and 15 here?

[RayFarmer]

Hi,

With visa, can communicate with different device through different interfaces using the same API, so when you open a session to a device you have to specify, not only the device address but also the interface.

general syntax is <interface><board>::<device address>::INSTR

If you have more than one interface of the same type in your system then you have to provide this information. the first card/board/interface is usually 0 (zero).

The actual device address, will vary depending on the interface ie for a GPIB interface you will have a primary address but you may have a secondary address as well.

In your case, you must have more than one pxi interface in your system and you want to communicate with the device in the second PXI system and the device (DAQ) in the 15 slot of the PXI rack.

You can find more information by view the help of the viOpen VI.

Hope this helps

Regards

Ray Farmer