Citizen Systems iDP-3421 Benutzerhandbuch

iDP-3420/3421/3423 User’s Manual

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.