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:
During data entry (ea. char. time)
2) During printing
12
30
13
3) When PAUSE
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
resistance.
14
AUTO
IN
When this signal is LOW, the paper is
FEED
automatically fed 1 line after printing.
(The signal level can be fixed to this by
setting DIP switch
to ON.)
15
NC
Not used.
16
Logic ground level.
17
C H A S S I S
Printer’s chassis ground, which is
isolated from the logic ground.
18
NC
Not used.
Twisted-pair return signal ground level.
31
1 6
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:
in paper out state
2) PAUSE
3) in error state.
Technical Specifications
7-11
