RD-KT247 thermal printers
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ut)
receives the data from the
host.
3
RXD
host
Import(in
)
The printer’s dashboard
sends data to the host.
(When
using
the
‘X-ON/X-OFF’ Handshake
Protocol
,
the printer sends
control code ‘X-ON/X-OFF’
to the computer.)
4
CTS
printer
Export(o
ut)
When the signal is in a state
of ‘MARK’, it means that the
printer is busy and can’t
receive data. But when the
signal is in a state of
‘SPACE’, it means that the
printer is ready to receive
data.
5
GND
——
——
Signal ground
1
NC
——
——
no connection
2.1.2
Baud rate select bit
SW
NO.
1200
2400
4800
9600
19200 38400 57600 115200
1
off
on
off
on
off
on
off
on
2
off
off
on
on
off
off
on
on
3
off
off
off
off
on
on
on
on
2.1.3
handshake method select bit
The handshake methods can be selected by the DIP switch SW4 in the machine. When the machines
leave factory, the location of the sw4 is ‘OFF’ (Default).
SW4
Handshake
method
Data direction
RS-232 interface signal
ON
Mark control
Data can enter
The signal line ‘4’ is in a state of
‘SPACE’
Data can’t enter
The signal line ‘4’ is in a state of
‘mark’