Epson LQ-2550 User Manual - Page 248
ACKNLG, DA TA, STROBE, Interface timing, Serial interface
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Interface timing The figure below shows the timing for the parallel interface. BUSY ACKNLG f-4 I DA TA STROBE Serial interface The LQ built-in serial interface is an RS-232C asynchronous interface with the following characteristics: Data format 1 start bit Data word length: 8 bit Odd, even, or no parity 1 stop bit Baud rate 300, 600, 1200, 2400, 4800, 9600,192OO bits per second. Signal level Mark (1) -3 V to -27 V Space (0) +3 V to +27 V A-12 Technical Specifications
Interface timing
The figure below shows the timing for the parallel interface.
BUSY
f-4
ACKNLG
I
DA TA
STROBE
Serial interface
The LQ built-in serial interface is an RS-232C asynchronous interface
with the following characteristics:
Data format
1 start bit
Data word length: 8 bit
Odd, even, or no parity
1 stop bit
Baud
rate
300, 600, 1200,
2400, 4800, 9600,192OO
bits per second.
Signal level
Mark
(1) -3
V to -27 V
Space (0) +3 V to +27 V
A-12
Technical Specifications