Tally DT-230, Руководство пользователя

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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 indicates
that the printer can’t receive data.
12 P
PE Signal; Paper end signal; High level indicates that
the printer is paper end.
13
－
Unconnected
14
－
Unconnected
15
－
Unconnected
16
Logic Ground
17
Frame Ground, 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