Epson T-1000 User Manual - Page 65

Parallel Interface, Connector pin assignments and a description of respective interface - terminator

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Technical Specifications Parallel Interface Connector pin assignments and a description of respective interface signals are shown below and on the following page. Signal Return Pin Pin 1 19 2 20 3 21 4 22 5 23 6 24 7 25 8 26 9 27 10 28 11 29 12 30 13 14 15 - Signal Direction Description STROBE IN STROBE pulse to read data in. Pulse width must be more than 0.5 µs at the receiving terminal. DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 DATA 8 IN These signals represent information of IN the 1st to 8th bits of parallel data, IN respectively. Each signal IS at HIGH level IN when data is logical 1 and LOW when it IS IN logical 0. IN IN IN ACKNLG OUT Approximately, 12 µS pulse. LOW indicates that data has been received and that the printer is ready to accept more data. 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) During printing 3) When off line 4) During printer-error state. PE OUT A HIGH signal indicates that the printer is out of paper. Pulled up to +5 V through 3.3 K resistance. AUTO IN FEED XT NC - When this signal is LOW, the paper is automatically fed 1 line after printing. (The signal level can be fixed to this by setting DIP switch 2-4 to ON.) Unused. Technical Specifications 6-5

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Technical Specifications
Parallel Interface
Connector pin assignments and a description of respective interface
signals are shown below and on the following page.
Signal Return
Pin
Pin
Signal
Direction Description
1
19
STROBE
IN
STROBE pulse to read data in. Pulse
width must be more than 0.5 μs 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 it
IS
6
24
DATA 5
IN
logical 0.
7
25
DATA 6
IN
8
26
DATA 7
IN
9
27
DATA 8
IN
10
28
ACKNLG
OUT
Approximately, 12 μ
S
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) During printing
3) When off line
12
30
PE
OUT
4) During printer-error state.
A HIGH signal indicates that the printer is
out of paper.
13
Pulled up to +5 V through 3.3 K
resistance.
14
AUTO
FEED XT
IN
When this signal is LOW, the paper is
automatically fed 1 line after printing.
(The signal level can be fixed to this by
setting DIP switch 2-4 to ON.)
15
-
NC
-
Unused.
Technical Specifications 6-5