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Tally Dascom DT-210/230
31
5.2.5 Parallel interface
Parallel interface pin assignment
Parallel interface with 36 pin CENTRONICS socket.
Pin No.
Signal From
Description
1
H STB Signal; Data latch pulse, latch the data to the
printer at the rising edge of the negative pulse.
2
H
Data
0
(The lowest bit)
3
H
Data
1
4
H
Data
2
5
H
Data
3
6
H
Data
4
7
H
Data
5
8
H
Data
6
9
H
Data
7
(The highest bit)
10
P ACK Signal; Printer response signal, indicates that
the printer has received the last byte of data; A
negative pulse of about 1us.
11 P
Busy Signal;
The printer is busy; High level
indicate
s
that the printer can’t receive data.
12 P
PE Signal;
Paper end signal; High lev
e
l indicates that
the printer is paper end.
13
Unconnected
14
Unconnected
15
Unconnected
16
Logic Ground
17
Frame
G
round
, separated from logic ground.
18
Unconnected
19~30
Logic Ground
31
Unconnected
32
P Printer error signal, low level indicates that error
occurs in the pprinter; The error signal will output
along with paper end signal.
33
Logic Ground
34~35
Unconnected
36
Unconnected
Note:
H indicates that signal comes from Host computer; P indicates that signal comes from Printer.
Parallel interface connector diagram
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