Error -1073807246 with VISA (Arduino - Labview)

[Aleix_C]

Hi, i spent a lot of time trying to solve that error. I'm trying to communicate Labview - Arduino with the example Simple Serial.vi to see that everything works correctly. If i don't open the Serial Monitor in Arduino, the communication works well, but when i open it (closing the .vi and restarting all before run .vi), Labview gives me error 1073807246 and i don't see any data in the Serial Monitor(i don't receive it either).

I've tried everything, reinstall NI VISA, put Close VI to make sure there is no more than 1 connection at the same time...

Hope someone can help me, thanks!

[daveTW]

I think you can't use the serial monitor and the VI at the same time, if the serial port is occupied by one program, it cannot be opened by another program.

[Aleix_C]

Hey Dave, thank you for the quick reply.

I can use the Serial Monitor from Arduino and the VI running, when i'm using Arduino-Labview, I always use this method to know how Arduino read the strings of Labview. It's the first time that i have this problem...

[anilkumarmuppirala18]

hallo Aleix even i feel like dave is correct but as you said it works for you i will look into it again .in the mean time i would suggest you to close the communication and start again if still its not working try re connecting the arduino

[Aleix_C]

Hi, yes i tried to close the communication and reconnecting Arduino but still didn't work... I don't know what to do.

[anilkumarmuppirala18]

hello alexi i have tried what you said yesterday and i have to say dave is right . You cant open serial monitor and also communicate with labview unless you are using an arduino with more than one com port . which arduino are you using is it uno or lenaord or nano...?

[Aleix_C]

It's Arduino Mega 2560.