Free the com port when the program is not executing

[A123]

Hi!!

I am using RS-232 communication in my LV application, and I would like to "free" the com port when the application is not running. 

I am closing all VISA connection after use.  In the main front panel I pick which com port to use and com1 is set as default. A global VISA resource variable is set, since serial communication is used in several tasks in the application.

Is there a way to add "none" to the list of 'VISA resource name' ? Or is it an other way to disable the RS-232 connection when the program is not executing ?

Today when opning  a hyperterminal to check the target for the serial communication, one has to close down the LV application.

I will be very grateful for suggetions.

Anita.

[tbd]

Hi Anita,

      VISA close can free the port so Hyperterminal will be able to access it without closing LabVIEW.  You can prove it by building a simple program to open the port wait for a button then close the port.  Beware though, a VISA Read or Write will "open" the port again, even if you close it!   Make sure the port isn't accessed again if you want it to stay closed!

Cheers!

[A123]

You are just brilliant!!!! Thank you!