Interface Specifications; Pin Assignments For The Parallel Interface - Epson LX-810 User Manual

Interface Specifications
Your printer is equipped with an 8-bit parallel interface. For
specifications on optional interfaces, refer to their manuals.
Pin assignments for the parallel interface
Connector pin assignments and a description of their respective
interface signals are shown in the following table.
Signal
Pin
Return
Pin
Signal
Direc
tion
Description
1 19
STROBE IN
STROBE pulse to read data. Pulse
width must be more than 0.5
microseconds at the receiving terminal.
2
3
4
5
6
7
8
9
20
21
22
23
24
25
26
27
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
IN
IN
IN
IN
IN
IN
IN
OUT
These signals represent information of
the 1st of 8 bits of parallel data,
respectively.
Each signal is at HIGH level when data
is logical 1 and LOW when it is logical
0.
10
28
ACKNLG OUT
About a 12 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 (ea. char, time)
2) When off line
3) During printer-error state
12 30
PE
OUT
A HIGH signal indicates that the printer
is out of paper.
Technical Specification 8-9