Citizen Systems iDP-3423 User Manual
Page 43
iDP-3420/3421/3423 User’s Manual
43
CITIZEN
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(1) Input signals to the printer
· DATA
: An 8-bit parallel signal. (Positive logic)
· STB
: A strobe signal to read the 8-bit data. (Negative logic)
· RESET : A signal to reset the printer from the outside. (Negative logic)
(2) Output signals from the printer
· ACK
: An 8-bit data request signal. A pulse signal output at the end of the
BUSY signal. (Negative logic)
· BUSY
: A signal to indicate the BUSY status of the printer. Input new data
when at "LOW". (Positive logic)
· FAULT
: A signal turned to "LOW" when the printer has an alarm. At this time,
all the control circuits in the printer stop. (Negative logic)
· SELECT : A signal to show whether the printer is selected (On-line) or deselected.
(Positive logic)
· COMPULSION
: A signal to show the status of the drawer switch. (Positive logic)
· PE
: A signal to show that the paper has run out. Normal at the "LOW" level,
but turned to the "HIGH" level when the paper has run out.
(3) Power related signal
· GND
: Common ground on the circuits
· Vcc
: A +5 V signal. Connected via a 3.3kW resistor.