SPRT SP-POS58III User Manual - page 7
SPRT
6
GND
RTS
TXD
RXD
DSR
DTR
GND
CTS
DCD
RXD
TXD
7
5
3
2
6
4
5
8
1
2
3
GND
RTS
TXD
RXD
DSR
DTR
GND
CTS
DCD
RXD
TXD
7
5
3
2
6
20
7
5
8
3
2
Pin No.
Signal
Source
Description
2
RXD
Host
Printer receives data from host
3
TXD
Printer
Printer transmits data to host
5
CTS
Printer
Signal “MARK” indicates that
the printer is “BUSY” and
unable to receive data;
“SPACE” indicates that the
printer is “READY” for
receiving data.
6
DSR
Printer
Signal “SPACE” indicates that
the printer is “ONLINE”.
7 GND —
Signal
Ground
8
DCD
Printer
Same with CTS
Note: “Source”
①
denotes the source that signal comes from;
②
Logical signal level is EIA.
Fig.2-5 Pin Assignment of Serial Interface
The baud rate and data structure in serial interface mode are set to 9600bps,
8 data bits, no parity bit and 1 stop bit.
The serial interface of SP-POS58III can be connected to standard RS-232C
interface. When connected to IBM PC or compatible machine, connection
can accord to Fig.2-6.
Printer 25pin IBM PC Serial Printer 25pin IBM PC Serial
Socket Interface DB-9 Socket Interface DB-25
Fig.2-6 Connection between SP-POS58III and
IBM PC Serial Interface Sketch Map
2.3.2 Parallel Interface Connection
The parallel interface of SP-POS58III printer is compatible with
CENTRONICS, supports BUSY and /ACK handshaking protocol, it uses
DB25 socket (male), the pin order of parallel port is as Fig. 2-7 shows: