Line Thermal Printer User's Manual

CBM-230/231 User’s Manual

CITIZEN

6.3 Input / Output Signals

6.3.1 Input / Output Signals

(1) Input signals to the printer

• DATA : This is an 8-bit parallel signal (Positive logic)

• STB : This is a strobe signal to read in 8-bit data (Negative logic)

• RESET : This signal resets the entire printer (Negative logic) 1 ms or more

(2) Output signals from the printer

• ACK : This is an 8-bit data request signal. Pulse signal output at the end of the BUSY signal

(Negative logic)

• BUSY : This signal indicates the BUSY state of the printer. Enter new data when it is at LOW.

(Positive logic)

• FAULT : This signal is set to low when the printer has an alarm. When this is done, all control

circuits in the printer stop.(Negative logic)

• PE : This signal is output when the printing paper has run out or is running out.

(Positive logic)

• Drawer switch output

: This signal is set to HIGH when the switch is opened, and to LOW when shorted.

(3) Power signals

• +5VDC : This is a 5 V output pulled up at a 3.3 k Ω resistor.

• GND : This is a common ground on the circuits.