Interface Specifications
Signal Return
Pin Pin
Signal
Oirection
Description
32
-
ERROR OUT
This level becomes LOW when the
printer is:
1)
out of paper
2)
off tine
3)
in
a
printer error state
33
-
GND
-
Same as for pins
19
-
30.
34
-
NC
-
Not used.
35
-
-
-
Pulled up to +5V through
3.3K
ohm
resistance.
36
-
SLCTIN
IN
The DClIDC3 code is valid only when
this
hignal
is HIGH. (Internal fixing is
possible with jumper
Jl.)
l All interface conditions are based
.on
TTL
level. Both the rise and
the fall times of each signal must be less than
0.2
microseconds.
l Data transfer is carried out by observing the
ACKNLG
or BUSY
signal. Data transfer to this printer occurs only after receipt of
the
ACKNLG
signal or when the level of the BUSY signal is
LOW.
l The column heading “Direction” refers to the direction of signal
flow as viewed from the printer.
l “Return” denotes the twisted-pair return to be connected at
signal ground level. For interface wiring, be sure to use a
twisted-pair cable for each signal and to complete the connection
on the return side. These cables should be shielded and
connected to the chassis of the host computer and the printer.
Technical Specifications
8-13
