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lnferface Specifications
This printer is equipped with both a parallel and a serial interface.
Parallel interface
Connector pin assignments and a description of their respective interface
signals are shown in the table on the following pages.
Signal
Return
Pin
Pin
Signal
Direction Description
1
19
STROBE
IN
STROBE pulse to read data.
Pulse width must be more
than 0.5 µs at the receiving
terminal.
2
20
DATA 1
IN
These signals represent
3
21
DATA 2
IN
Information in bits 1 to 8 of
4 22
DATA 3
IN
parallel data respectively.
5
23
DATA 4
IN
Each signal is at HIGH level
6
24
DATA 5
IN
when data is logical 1 and
7
25
DATA 6
IN
LOW when it is logical 0.
8
26
DATA 7
IN
9
27
DATA 8
IN
10
28 ACKNLG
OUT
About an 11- µs 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) When the PAUSE button is
pressed
12
30
13 -
PE
SLCT
OUT
OUT
4) During an error state
A HIGH signal indicates that
the printer is out of paper.
Always HIGH
Technical Specifications A-11