Epson LQ-860 User Manual - Page 248

Interface Specifications, Parallel Interface, interface signals are shown in the following table.

Page 248 highlights

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

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Interface Specifications
Your printer is equipped with both a parallel and a serial interface.
For specifications on optional interfaces, see the manuals provided
with the interfaces.
Parallel Interface
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
1
2
3
4
5
6
7
8
9
10
11
Return
Pin
19
20
DATA 1
21
DATA 2
22
DATA 3
23
DATA 4
24
DATA 5
25
DATA 6
26
DATA 7
27
DATA 8
28
ACKNLG
29
BUSY
OUT
Signal
STROBE
Direction
IN
IN
IN
IN
IN
IN
IN
IN
IN
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
Technical
Specifications
8-11