[Values to be printed]
XON+READY AUTO: XON/XOFF+ READY/BUSY(DTR) mode
(XON output when the power is on, XOFF output when the power is off)
XON/XOFF AUTO: XON/XOFF mode
(XON output when the power is on, XOFF output when the power is off)
READY/BUSY RTS: RTS mode
(No XON output when the power is on, no XOFF output when the power is off)
XON/XOFF: XON/XOFF mode
(No XON output when the power is on, no XOFF output when the power is off)
READY/BUSY: READY/BUSY(DTR)
(No XON output when the power is on, no XOFF output when the power is off)