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Interface Specifications
Signal Return
Pin
Pin
Signal
Direction
Description
11
29
BUSY OUT
A HIGH signal indicates that the printer
cannot receive data. The signal goes
HIGH in the following cases:
1)
During data entry (ea. char. time)
2) During printing
12
30
PE
13
-
SLCT
3) When PAUSE
botton
is pressed
4) During printer-error state.
OUT
A HIGH signal indicates that the printer is
out of paper.
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.
R=T
(The 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) PAUSE
3) in error state.
Technical Specifications
7-11