Problems in using IVI instrument drivers

[mnx]

Hi all,

I have created seperate IVI instrument vi's for each functionality e.g. PSUinit.vi for initialization, PSUsetVoltage.vi for setting the voltage in power supply etc. But whenever i try to run these vis using a IVI logical name "PSU", they dont work and I endup getting errors like "PSU(1)" logical name not found.."PSU(2)"logical name not found etc.

Any suggestions on where am I making a mistake?

[mnx]

And how should I pass the IVI logical name between these vi's??..Should the logical name has to goto one vi, come out of it and then goto the another or can I give to any vi at any point of time?

[Dennis_Knutson]

You've added the logical names in MAX and associated then with the specific IVI driver for the instrument?

[mnx]

Hi Dennis,

Yes I did that but the vi's are not working.

[Dennis_Knutson]

Can you post an image of your block diagram and the MAX set-up?

[mnx]

Please find the attached BD & MAX image.

[mnx]

And how should I connect logical name?..should I use method 1 or method 2?..I guess I am getting problems due to this coz I havent actually closed the logical name instance in each vi..But I am not sure about it.

Also in plug & play drivers it doesnt matter which method (1 or 2) one follows and whether one has closed the instance or not. They still work but I think the same case is not valid for IVI.Is it true?

P.S Please find the attached image for method 1 & 2

[mnx]

Hi all..any thoughts on this??

[Dennis_Knutson]

I've always used the reference out and connected it to the reference in of the next function.