Determines that the RTS line will be high if bytes are available for transmission. After all buffered bytes have been sent, the RTS line will be low. Integer value=3.
If not using .NET Framework, use constant GX_RTS_TOGGLE.

Disables the RTS line when the device is opened and leaves it disabled. Integer value=0.
If not using .NET Framework, use constant GX_RTS_DISABLE.

Enables RTS handshaking. The driver raises the RTS line when the input buffer is less than one-half full and lowers the RTS line when the buffer is more than three-quarters full. Integer value=2.
If not using .NET Framework, use constant GX_RTS_HANDSHAKE.

Enables the RTS line when the device is opened and leaves it on. Integer value=1.
If not using .NET Framework, use constant GX_RTS_ENABLE.