User`s guide

Technical Specifications
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 information in
3
21
DATA 2
IN
the 1 st to 8th bits of parallel data,
4 22 DATA 3
IN
respectively. Each signal is at HIGH level
5 23 DATA 4 IN when data is logical 1 and LOW when
6
24 DATA 5
IN
it is logical 0.
7 25 DATA 6 IN
8 26 DATA 7 IN
9
27
DATA 8 IN
1O 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 that the printer
cannot receive data. The signal goes
HIGH in the following cases:
1) During data entry
2) During printing
3) During an error state
12 30 PE
OUT
A HIGH signal indicates that the printer is
in a paper-out state or in an error state.
13 - SLCT
OUT
Pulled up to 5V through 1.0 KR
resistance.
14 -
AUTO IN
When this signal is LOW, the paper is
FEED
-
automatically fed one line after printing.
x-r
(The signal level can be fixed to this
by setting Auto Line Feed on in the
default-setting mode.)
15 - -
-
Not used
16
-
GND -
Logic ground level
17 - CHASSIS - Printer’s chassis ground, which is
GND isolated from the logic ground
Appendix A-9