How can I clear the parallel port?

I'm sending image-files to a custom made printing unit via VISA through the parallel port.
Sometimes the unit doesn't accept the file.
Therefore I need to clear the parrallel port completely and send the file again.
(Right now I'm switching off the unit and waiting for the error message from WindowsNT).
How can I clear the parrallel port via LabVIEW?
(VISA clear.vi doesn't work, the data is still on the port).

Rainer,
Maybe you can try the "VISA Flush I/O Buffer" vi (VISA - VISA Advanced -
Interface Specific). It worked on a serial port, but I have no idea if it
works
also on a parallel port. It is worth trying it.
Good Luck.
"rainer" schreef in bericht
news:[email protected]..
> I'm sending image-files to a custom made printing unit via VISA
> through the parallel port.
> Sometimes the unit doesn't accept the file.
> Therefore I need to clear the parrallel port completely and send the
> file again.
> (Right now I'm switching off the unit and waiting for the error
> message from WindowsNT).
> How can I clear the parrallel port via LabVIEW?
> (VISA clear.vi doesn't work, the data is still on the port).

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