Tally Dascom DL-210 - 6.6 Parallel interface

Tally Dascom DL-210 User Guide V1.3
53
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