Epson Stylus Pro XL [552/573] Lx 300 and later 9 pin printers and lq 300 and later 24 48 pin printers

Epson Stylus 820 [552/573] Lx 300 and later 9 pin printers and lq 300 and later 24 48 pin printers
A-34 Parallel Interface
LX-300 and later 9-pin printers, and LQ-300 and later 24/48-pin printers
The flow chart shown below illustrates the recommended procedure for checking the status
of a parallel interface.
Parallel interface flow chart
Start
ERROR signal
Not Error
BUSY signal
Not Busy
Send 1 byte data
to printer
Data
remains
No
End
Busy
Yes
Error
PE signal
Paper End
Paper end
Not Paper End
Error
BUSY
ACKNLG
DATA
STROBE
0.5 µs (min.)
0.5 µs (min.)
0.5 µs (min.)
0 µs (min.)
0.5~10 µs
0 µs (min.)

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