Epson LQ-510, User Manual

Page: 219 / 295

Interface Specifications
Your printer is equipped with an B-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
Return
Pin
Pin
1 19
2 20
3 21
4
22
5 23
6 24
7 25
8 26
9
27
10 28 ACKNLG
11 29
12 30
BUSY
PE
Signal
STROBE
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
I
Directior
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
Description
STROBE pulse to read data. Pulse
width must be more than 0.5
microseconds at the receiving terminal.
These signals represent information of
the 1st to 8th bits of parallel data,
respectively. Each signal is at HIGH
level when data is logical 1 and LOW
when it is logical 0.
About an 11 -microsecond pulse. LOW
indicates that data has been received
and that the printer is ready to accept
more data.
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) During printing
3) When off line
4) During printer-error state
A HIGH signal indicates that the printer
is out of paper.
Technical Specifications 8-9