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Interface Specifications
Signal
Return
Pin
Pin
Signal
Direction
Description
13
SLCT
OUT
Pulled up to + 5 volts through 3.3 Kohm
resistance.
14
AUTO
IN
When this signal is LOW, the paper is
FEED
automatically fed 1 line after printing. (The
XT
Signal level can be fixed to this by setting
DIP switch 2-4 to on.)
15
NC
Not used.
16
GND
Logic ground level.
17
CHASSIS
Printer's chassis ground, which is
GND
isolated from the logic ground.
18
NC
Not used.
19-30
GND
Twisted-pair return signal ground level.
31
16
INIT
IN
When this level becomes LOW, the printer
controller is reset to its power-up state
and the print buffer is cleared. This level is
normally HIGH; its pulse width must be
more than
50
microseconds at the
receiving terminal.
32
ERROR OUT
This level becomes LOW when the printer
is:
1) in paper out state.
2) off line.
3) in error state.
33 GND
Same as for Pins 19-30
34 NC
Not used
35
OUT
Pulled up to 5V through 3.3 Kohm
resistance.
36
SLCT IN IN
The DC1/DC3 code is valid only when this
signal is HIGH. (Internal fixing can be
carried out with Jumper J10. The level of
this signal is factory-set to LOW.)
Technical Specifications 8-9