If nothing has changed in your application, maybe it's a hardware failure.
Try another serial port, or better yet, another machine. I think UARTS
may contain all the com ports and if one receiver is bad they may all
be.
Just a thought.
Alan Brause
"Bill Trump" wrote in message news:3B0DA1AC.71796B7D@digital.net...
> Help...
>
> I'm not using VISA, just the serial port vi's and they've worked great
> for a long time. It's a rather large app that's been working and
> growing for years.
>
> Anyway, has anyone ever had a problem where the receiver on COM1 closes
> by itself, but the transmitter is still working just fine. I'm running
> 19.2K baud and have tried various buffer sizes. I recieve 20 byte
> messages come every 15 miliseconds. I run fo
r a few minutes and then
> nothing. I've tried programatically re-initializing the comm port every
> few minutes, but it has no affect once the receiver fails.
>
> Any ideas?
>
> Thanks,
> Bill
