visa-serial

[zahra.s]

hi to all.

i write a program with pic and connect it to the pc (lab view) with seriat to usb connector. this progam send temp of the amb to the pc(data logger) . this sampling is every 10 ms update.i have several problem.

after several minute stop the program so that display this error(on the image).lab view stop and hanging . sometime restart the my pc!!

i use the serial to usb connector(made in china!!!) whats is the problem?

[Dennis_Knutson]

Neither the error message or your VI are readable in that image. Do NOT attach such images in the future. If you attach an image, attach a snippet. That is a specific type of image. Look it up in the help if you don't know how to create one.

[zahra.s]

ok

[GerdW]

Hi zahra,

the error says: "You're too slow with reading the data from the port!"

So: read more often and/or read more bytes/chunk…

[Dennis_Knutson]

You still haven't attached a snippet!

[zahra.s]

tnx.

dennis i dont understand. whats is this?

i think i have to set a block for example(clear visa,flush or ...) thats true?

beacouse my buffer will become full and hang my program.

whats should i do ?????/

[Dennis_Knutson]

You shouldn't let your buffer get full!

A snippet is fully explained in the LabVIEW help as I already said.

[zahra.s]

tnx .tell me about  which function i have to use!?

[Dennis_Knutson]

I have no idea what function you have to use because you still have not attached your code in the correct format. If you are unwilling to read the LabVIEW help, then I am unwilling to answer your questions.

[crossrulz]

Please post your actual VI so that we can get the full picture of what you are trying to do.

But based on the half picture, you could just get away with getting rid of your wait.  These buffer overflows also happen a lot due to the highlight execution slowing things down a lot.