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) |
CITIZEN | 18 |
