TCnSerialPort.Handshake Property
Gets or sets the handshaking protocol for serial port transmission of data using a value from Handshake.
published property Handshake: THandshake read GetHandshake write SetHandshake default THandshake.hsNone;
When handshaking is used, the device connected to the SerialPort object
is instructed to stop sending data when there is at least ( ReadBufferSize-1024) bytes in the buffer. The device is
instructed to start sending data again when there are 1024 or fewer
bytes in the buffer. If the device is sending data in blocks that are
larger than 1024 bytes, this may cause the buffer to overflow.
If the Handshake property is set to RequestToSendXOnXOff and CtsHolding is set to false, the XOff character will not be sent.
If CtsHolding is then set to true, more data must be sent before the
XOff character will be sent.