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CBM-270 User’s Manual
CITIZEN
35
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3I
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In
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6
66
6.
..
.3
33
3.
..
.1
11
1I
II
In
nn
np
pp
pu
uu
ut
t t
t a
aa
an
nn
nd
d d
d O
OO
Ou
uu
ut
tt
tp
pp
pu
uu
ut
t t
t S
SS
Si
ii
ig
gg
gn
nn
na
aa
al
ll
ls
ss
s
(1) Input signals to the printer
·
DATA : 8-bit parallel signal (Positive logic)
·
STROBE : Strobe signal to read the 8-bit data (Negative logic)
·
RESET : Signal to reset the entire printer (Negative logic); 1 ms or more
(2) Output signals from the printer
·
ACK : 8-bit data request signal. A pulse signal to be output at the end of the
BUSY signal (Negative logic)
·
BUSY : Signal to indicate that the printer is busy. Input new data when it is "Low."
(Positive logic)
·
FAULT : Turned to "Low" when the printer has an alarm. At this time, all the control
circuits in the printer stop. (Negative logic)
·
PE : Output if the printing paper has run out or is running out. (Positive logic)
(3) Power source and the related
·
+5 V DC : 5 V output pulled up by a 10k
W
resistor
·
GND : Common ground for the circuits