Refreshing visa resource control

[cheah]

Hi all,

I have a program that communicates to devices via a serial connection on a Mac machine (using a USB to RS-232 cable).

To select which port to onnect to, I've used the existing "VISA Resource" control that gives a drop-down list of available ports on the device. However, it seems to me that it does not refresh itself even after devices have been plugged or unplugged. The only way I can get a refreshed list is by closing the VI and then reopening it again. Is there a better way to do this?

Thanks!

cheers

[AdnanZ]

What happens when you press the refresh button which is available at the bottom of the drop-down menu? One thing you could try is to open up MAX and navigate to Software -> NI-VISA and select the tab for VISA Options. Then, choose Aliases under General Settings and add the alias. Let me know if that helps.