Execution of shared USB port

Hello:

I use a key USB Hub (x 8) RS - 232 and I created a Subvi to read the data via a port COM using VISA. Everything works fine.

When I try to run two instances of the same Subvi in parallel (with two instances of the same VI on the block diagram with different COM ports as inputs), the SubVIs are not running at the same time, but in the order. What settings will allow to run the SubVis in parallel and share the USB port?

Thank you!

Dan

Hi Dan10

Have you tried

"VI > properties > run > run (Checked) reentrant'?"

You should be able to communicate with

-different instances of the same program (VI) on different ports... is not serious USB, series, GPIB.

It works for you?

(However you want to access the same port, then you will need to isolate your 2 instances (such as MISTLETOE) talking to the same resource driver underneth.)

Tags: NI Hardware

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