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iDP-3530 User’s Manual
CITIZEN 18
6-3 Description of Input / Output Signals
1. Input / Output Signals
Input Signals (To Printer)
DATA 1 : 8 bit signal (Positive logic)
DATA 2 : 8 bit signal (Positive logic)
DATA 3 : 8 bit signal (Positive logic)
DATA 4 : 8 bit signal (Positive logic)
DATA 5 : 8 bit signal (Positive logic)
DATA 6 : 8 bit signal (Positive logic)
DATA 7 : 8 bit signal (Positive logic)
DATA 8 : 8 bit signal (Positive logic)
STB : A strobe signal for reading in 8 bit data. (Negative logic)
Output Signals (From Printer)
ACK : This is pulse signal for requesting 8 bit data, issued at the end of a BUSY signal. (Negative logic)
BUSY : This signal indicated that your printer is in a BUSY state. New data should be input when this signal
is “LOW”. (Positive logic)
FAULT : When your printer is in an alarm state, this signal is “LOW”. At this time, all control circuit of your
printer are interrupted. (Negative logic)