New question~

[Belinda]

Hello everyone:

    I'm a beginner.I have a question about LEBVIEW, and hope that I can receive your hands. 

    When I learn about Labview Example,I can't catch on something about Advanced Serial Write and READ.vi.

I don't know what about "XON" and "XOFF" mean.And how to the example come true.

    I know that you can help me with kindness. Waiting here for you!

    Thanks.

[johnsold]

Welcome to LabVIEW.

"XON" and "XOFF" are the names of special characters sometimes used by serial comunications systems to stop and start the flow of data over the serial port. They constitute an alternative form of hadshaking to the RTS/CTS hardware flow control.

This is how it works. If the receivign device's buffer is nearly full, it sends "XOFF". When the sending devices senses the "XOFF" character it stops sending until the receiving device has cleared most of its buffer and sends "XON".

Some devices are not able to use XON/XOFF handshaking. You need to check the documention provided by the device manufacturer as this is not something controlled by LabVIEW.

Lynn