Epson ActionPrinter 2250 User Manual - Page 80

Appendix A-9, About a 1 O-microsecond pulse. LOW

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Technical Specifications The table below provides the connector pin assignments and describes their respective interface signals. Signal Return Signal Direction Pin Pin Description 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 in 3 21 DATA 2 IN the 1 st 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 DATA 8 IN 1O 28 ACKNLG OUT About a 1 O-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 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 1.0 KR resistance. 14 - AUTO - FEED x-r 15 - - 16 - GND IN When this signal is LOW, the paper is automatically fed one line after printing. (The signal level can be fixed to this by setting Auto Line Feed on in the default-setting mode.) - Not used - Logic ground level 17 - CHASSIS - Printer's chassis ground, which is GND isolated from the logic ground Appendix A-9

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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 in
3
21
DATA 2
IN
the 1 st 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
DATA 8
IN
1O
28
ACKNLG
OUT
About a 1 O-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
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 1.0
KR
resistance.
14
-
AUTO
IN
When this signal is LOW, the paper is
FEED
-
automatically fed one line after printing.
x-r
(The signal level can be fixed to this
by setting Auto Line Feed on in the
default-setting mode.)
15
-
-
-
Not used
16
-
GND
-
Logic ground level
17
-
CHASSIS
-
Printer’s chassis ground, which is
GND
isolated from the logic ground
Appendix A-9