8
20
DTR
Output
Printer
Signal “MARK” means the
host is busy and can not receive
data.Signal “SPACE” means
the host is ready to receive
data.
Fig. 2-3 The pin assignment of serial interface
Note: (1)“Source” denotes the source that signal come from;
(2)Logical signal level is EIA.
The baud rate and data structure in serial interface mode is 9600bps,
8-bit data bits, no parity bit and 1 stop bit.
The serial interface of SP-POS88
Ⅴ
can be connected to standard
RS-232CRS-232C interface. When it is connected to IBM PC or its
compatible machine, connection can accord to Fig.2-4.
Fig.2-4 Connection between SP-POS88
Ⅴ
and IBM PC Serial Interface
Sketch Map
2.3.2 Parallel Interface
The parallel interface of POS88
Ⅴ
printer is compatible with CENTRONICS,
supports BUSY or ACK handshaking protocol, uses
36pin CENIRONICS socket (female)
The pin assignment of DB25 parallel interface is as Fig. 2-5 shows:
RXD
DTR
RTS
TXD
DSR
GND
TXD
DSR
CTS
RXD
DTR
GND
3
2
6
7
8
20
2
5
4
6
3
4
RXD
DTR
RTS
TXD
DSR
GND
TXD
DSR
CTS
RXD
DTR
GND
3
2
6
7
5
20
3
7
20
6
2
4
Printer
25PIN Socket
Printer
25PIN Socket
IBM PC
DB9 Socket
IBM PC
DB25 Socket
