Epson 3250 Printer User Manual


 
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 of
3
21
DATA 2
IN
the 1st 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
DATA8 IN
10
28
ACKNLG
OUT
About a IO-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 (ea. char. time)
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 .O KQ
resistance.
14 -
AUTO
IN
When this signal is LOW, the paper is
FEED
automatically fed one line after printing.
XT
(The signal level can be fixed to this
by setting Auto Line Feed to on in the
default-setting mode.)
Appendix A-9