Printer User Manual

Interface Specifications
Signal Return
Pin Pin
Signal Direction
-lptiofl
10 28
m OUT About a 1Pmicrosecond pulse.
LOW indicates that data has been
received and that the printer is ready to
accept more data.
11
29 BUSY OUT A HIGH signal indicates that the printer
cannot receive data. The signal goes
HtGH in the following cases:
1) during data entry (ea. char. time)
2) when off line
12 30
PE
3) during a printer error state
4) during printing
OUT A HIGH signal indicates that the printer
is out of paper.
13 - - -
Pulled up to +5 volts through 3.3K ohm
resistance.
14 -
m IN When this signal is LOW, the paper is
FEED automatically fed one line after printing.
(The signal level can be fixed to this by
turning on DIP switch 2-4.)
15 -
NC - Not used.
16 -
ov - 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 -
lNlf 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 usually~H/GH; its pulse width
must be more man 56 microseconds at
the receiving terminal.
8-12 Technical Specifications