Epson EPL-7500 사용자 설명서

Serial interface

Parallel interface

The 

is factory-set for the parallel

interface. To use another interface, you must change the

connect the interface cable. See Chapter 3 for instructions
on changing SelecType settings.

The printer has the following resident interfaces:

 

Parallel

 RS-232/RS-422 serial
  A p p l e T a l k

Your printer is equipped with an 8-bit parallel interface.

Signal level: TTL compatible

The printer’s resident serial interface can be set for either RS-232
or 

operation. These interfaces have the following

characteristics.

Word length:

7 or 8 bits

Parity:

Space or none, odd or even, mark or none

Stop bits:

1 or 

Printer ready protocol: enabled (DTR and XON/XOFF protocol

set to ON.)

The data format can be set using functions and menu items in
SelecType.

RS-232: 300, 600. 1200, 2400, 4800. 9600, 19,200, 38,400 bits per

second.

RS-422: 300, 600, 1200, 2400, 4800, 9600, 19,200, 38,400, 57,600

bits per second.

RS-232: Conforms to EIA
RS-422: Conforms to EIA

EPL-7500-4

1/7/91

The printer’s serial interface can use DTR (Data Terminal Ready)

signal levels and XON/XOFF communication protocols either
separately or in combination. When the vacant area for data in the
input buffer drops to 128 bytes, the printer outputs an XOFF code
or sets the DTR signal level to low (MARK, indicating that it
cannot receive any more data).

Once the vacant area for data in the buffer recovers to 256 bytes,
the printer outputs 

an 

XON code or sets the DTR flag to high

(SPACE), indicating that it is again ready 

to 

receive data.

D-sub 25-pin connector
DIN S-pin connector

There are four ways that the printer can be initialized (returned to
a fixed set of conditions).

in SelecType Level 2 is executed.

 Software sends the printer-initialize

The following tables list the default conditions that become valid
when the printer is initialized. The default conditions differ
according to the printer mode.

CR=CR. LF=LF. FF=FF

CR=CR, LF=LF. FF=FF

Font ID

Character

 

code

I

Laser Printers