Interface Specifications - Epson LQ-2550 User Manual

Storage condition:

Interface Specifications

Your printer is equipped with both a parallel and a serial interface. For
specifications for optional interfaces, see the manuals provided with the
optional interfaces.
Parallel interface
The following tables describe the parallel interface.
Pin assignments for the parallel interface
Connector pin assignments and a description of their respective interface
signals are shown in the following table.
Technical Specifications
Temperature:
Humidity:
BUSY
40% to 60%
when data is logical 1 and LOW when it is
and that the printer is ready to accept
more data.
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.
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