The
table below provides the connector pin
assignments and describes
their respective interface
signals.
Signal
Return
Signal
Direction
Description
Pin
Pin
1
19
STROBE IN
STROBE pulse to read data.
Pulse width must be more
than
0.5 microseconds at
the receiving terminal.
2
20
DATA 1 IN
These signals represent
3
21
DATA2 IN
information of bits 1 to
4
22
DATA3 IN
to 8 of parallel
5
23
DATA4 IN
data, respectively.
6
24
DATA5 IN
Each signal is at HIGH
7
25
DATA6 IN
level when data is
8
26
DATA7 IN
logical 1 and LOW when
9 27
DATA8 IN
it is logical
0.
10
28
ACKNLG OUT
About a 1 O-microsecond
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 the
printer cannot receive data.
The signal goes HIGH in the
following cases:
1)
During data entry
(for each character)
2)
During printing
3)
During an error state
12
30
PE
OUT
A HIGH signal indicates the
printer is in a paper-out
state or in an error state.
13
-
SLCT OUT
Pulled up to 5
V
through
1
.O
kR
resistance
14
-
AUTO
IN
When this signal is LOW, the
FEED
paper is automatically fed
XT
one line after printing.
(The signal level can be
fixed to this by setting
Auto Line Feed to on in the
default-settings mode.)
A-8 Appendix
