Citizen Systems iDP-460 Benutzerhandbuch

 iDP-460 User’s Manual

31

CITIZEN

6.3.1 Input and Output Signals

(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)

(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)

• HI-LEVEL : Connected to VCC via a 3.3k

Ω

 resistor.

(3) Power related signal

• GND

: Common ground on the circuits