Parallel Interface - Tally Dascom DL-310 User Manual

Tally Dascom DL-210

6.6 Parallel interface


Parallel interface pin assignment
Parallel interface with 36 pin CENTRONICS socket.
Pin No. Signal From
1 H
2 H
3 H
4 H
5 H
6 H
7 H
8 H
9 H
10 P
11 P
12 P
－
13
－
14
－
15
16 Logic Ground
17 Frame Ground, separated from logic ground.
－
18
19~30 Logic Ground
－
31
32 P
33 Logic Ground
－
34~35
36 Unconnected
Remarks:
H indicates that signal comes from Host computer; P indicates that signal comes from Printer.

Parallel interface connector diagram
Description
Strobe Signal; Data latch pulse, latch the data to the printer
at the rising edge of the negative pulse.
Data 0 (The lowest bit)
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7 (The highest bit)
ACK Signal; Printer response signal, indicates that the
printer has received a Data byte.
Busy Signal; The printer is busy; High level indicates that
the printer can't receive data.
PE Signal; Paper end signal; High level indicates that the
printer is out of paper.
Unconnected
Unconnected
Unconnected
5V/500mA power output
Initialization signal
Printer error signal. Low level indicates that an error occurs
in the printer. It will come with paper end.
Unconnected
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User Guide V1.3