Table of Contents
Advertisement
8.3 Description of Input / Output Signals
8.3.1 Input / Output Signals
a)
Input / Output Signals
* DATA : 8 bit parallel signal. (Positive logic)
* STB :
A strobe signal for reading in 8 bit data. (Negative logic)
* RESET : A signal which resets the entire printer. (Negative logic, 1 ms or more)
b)
Output Signals (From Printer)
* ACK :
This is a pulse signal for requesting 8 bit data, issued at the end of a BUSY signal.
(Negative logic)
* BUSY : This signal indicates 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
circuits of your printer are interrupted. (Negative logic)
Note:
An alarm condition occurs when the timing of the print head movement sensor is
abnormal.
c)
Power Source
* "H" Level
* GND
* FRAME GND
CITIZEN
: H level out put for TTL level
: The common circuit ground.
: Connect the shield of interface cable to this.
15
iDP3540/3541 User's Manual
Advertisement
Table of Contents
