CITIZEN CT-S281 - Manual (Page 19)

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3.4 Setting DIP Switch (Only serial interface type)
DIP switch is provided only for serial interface specification.
The DIP switch is located at the bottom of the paper holder. To set the DIP
switch open the printer cover and remove the paper.
Baud Rate (bps)
Switch No. Function ON OFF
FEED FEED
ON
1 8
OFF
Baud rate selection See Table below.
Initial
Settings
1 Communication condition DIP switch setting Internal memory ON
setting method setting
2 Hand shake XON/XOFF DTR/DSR OFF
3 Bit length 7 bits 8 bits OFF
4 Parity check With parity None OFF
5 Parity selection Even parity Odd parity OFF
6 OFF
7 ON
8 Reserved − Fixed OFF
Selecting baud rate
Switch No.
6 7
2400 OFF OFF
4800 ON OFF
9600 OFF ON
19200 ON ON
1200 bps and 38400 bps can also be selected by a command or the memory
switch. 9600bps is factory setting.