CBM-270 User’s Manual

6.3Input and Output Signals

6.3.1Input and Output Signals

(1)Input signals to the printer

DATA

: 8-bit parallel signal (Positive logic)

 

 

 

 

STROBE

: Strobe signal to read the 8-bit data (Negative logic)

 

 

 

 

 

 

RESET

: Signal to reset the entire printer (Negative logic); 1 ms or more

(2) Output signals from the printer

 

 

 

 

ACK

: 8-bit data request signal. A pulse signal to be output at the end of the BUSY signal

 

 

 

 

 

 

(Negative logic)

BUSY

: Signal to indicate that the printer is busy. Input new data when it is "Low." (Positive

 

 

 

 

 

 

logic)

 

 

 

 

FAULT

: Turned to "Low" when the printer has an alarm. At this time, all the control circuits in

 

 

 

 

 

 

the printer stop. (Negative logic)

PE

: Output if the printing paper has run out or is running out. (Positive logic)

(3) Power source and the related

+5 V DC

: 5 V output pulled up by a 10kΩ resistor

GND

: Common ground for the circuits

6.3.2Electrical Characteristics

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Citizen Systems CBM-270 user manual Input and Output Signals, Electrical Characteristics