EPSON LX-300+II/300+II RTP/1170II Revision D
PRODUCT DESCRIPTION Interface Specifications 19
BUSY signal is active (HIGH level) under the conditions below:
In the process of receiving data
In the condition of being input buffer full
In the condition of being -INIT signal active (low level)
During hardware initialization
In the condition of being -ERROR or PE signal is active (low level, high level,
respectively)
In the self test mode
In the adjustment mode
In the default-setting mode
-ERROR signal is active (low level) under the conditions below:
In the condition of the printer hardware error (fatal error)
In the condition of a paper-out error
In the condition of a release lever error
PE signal is active (high level) under the condition below:
In the condition of a paper-out error
NOTE: In/Out shows the direction of signal flow as viewed from the printer.
Table 1-16. Connector Pin Assignment and Signals (Forward Channel)
Pin
No.
Signal
Name
Return
GND Pin
In/Out Functional Description
1 -STROBE 19 In
Strobe pulse. Input data is latched at falling edge of the
signal.
2 DATA1 20 In Parallel input data to the printer. bit 0: LSB
3 DATA2 21 In bit 1
4 DATA3 22 In bit 2
5 DATA4 23 In bit 3
6 DATA5 24 In bit 4
7 DATA6 25 In bit 5
8 DATA7 26 In bit 6
9 DATA8 27 In bit 7: MSB
10 -ACKNLG 28 Out
This signal (negative pulse) indicates that the printer has
received data and is ready to accept next one.
11 BUSY 29 Out
This signal’s high level means that the printer is not ready
to accept data.
12 PE 28 Out
This signal’s high level means that the printer is in a state of
paper-out error.
13 SLCT 28 Out Always at high level when the printer is powered on.
14 -AFXT 30 In Not used.
31 -INIT 30 In This signal’s negative pulse initializes printer.
32 -ERROR 29 Out
This signal’s low level means the printer is in a state of
error.
36 -SLIN 30 In Not used.
18 Logic H -- Out This line is pulled up to +5V through 3.9 kΩ resister.
35 +5V -- Out This line is pulled up tp +5V through 1.0 kΩ resister.
17 Chassis -- -- Chassis GND.
16,
33,
19-30
GND -- -- Signal GND.
15, 34 NC -- -- Not connected.
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