Tally Dascom DL-200, User Manual, Page: 72 / 98

Tally Dascom DL-200 User Guide V1.3
59
6.6 Parallel interface

Parallel interface pin assignment
Parallel interface with 36 pin CENTRONICS socket.
Pin No. Signal From Description
1 H
Strobe 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 a Data byte.
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 out of paper.
13
－
Unconnected
14
－
Unconnected
15
－
Unconnected
16 Logic Ground
17 Frame Ground, separated from logic ground.
18
－
5V/500mA power output
19~30 Logic Ground
31
－
Initialization signal
32 P
Printer error signal. Low level indicates that an error occurs
in the printer. It will come with paper end.
33 Logic Ground
34~35
－
Unconnected
36 Unconnected
Remarks:
H indicates that signal comes from Host computer; P indicates that signal comes from Printer.

Parallel interface connector diagram