Restarting serial communication after disruption

[shantanu@india]

Hi,

I am using a USB to serial converter to communicate to a PLC inside a while structure.

I am configuring the serial port before entering the loop.

The communication is fine...there is no issue with that.

Now whenever I unplug my USB-to-serial device the loop continues to execute unless I use the 'STOP' button to forcibly stop the loop. Only after the loop stops executing , the error dialog box is thrown.

Can anybody guide me in modifying my program to the achieve the following:

1. The while loop exits as soon as the USB-to-serial converter is unplugged.
2. Any means of restarting the VI after restoring the USB-to-serial converter.

Thanks in advance.

[shantanu@india]

Hi,

I have used the unbundle function to read the error status & exit the while loop.

Attaching the edited version.

But my second issue is still unsolved.

[crossrulz]

Put another While loop around all of your code.  Have it stop when you press the stop button.

[shantanu@india]

Hi,

Thanks.

The while loop around the code works fine , but the outer stop button does not stop the execution.

I have to press the outer stop button then the inner stop button & then the outer stop buttoon once again to exit from the program.

[shantanu@india]

Hi,

Only one stop button in the inner while loop does the trick....