RD-KT247 thermal printers
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communication interface, and the spacing between the needles is
2.54mm
.
Figure 2-3 is the parallel
interface figure.
Figure 2-3
2.2.1data interface
26pin row
socket
(pin NO.)
Signal
name
Signal
direction
Illustration
DB25
parallel
interface wire on the
PC (pin NO.)
1
STB/
in
数据选通触发脉冲，上升沿时读入数据
1
3
DATA1
In
8 data pins, the logic ‘0’ indicates low, ‘1’
indicates high
2
5
DATA2
In
3
7
DATA3
In
4
9
DATA4
In
5
11
DATA5
in
6
13
DATA6
In
7
15
DATA7
In
8
17
DATA8
In
9
19
ACK/
Out
Answer pulse, and "Low" level indicates
that the data has been accepted
10
21
BUSY
Out
"High" level indicates that the printer is
busy and can’t receive data
11
23
PE
— —
Grounding (
PERROR
)
--
25
SEL
Out
经电阻上拉
“
高
”
表示打印机在线
13
4
ERR/
Out
经电阻上拉
“
高
”
电平表示无故障
15
2
，
6
，
8
NC
— —
no connection
--