Interface Specifications - Epson EPL-7500 Manual

EPL-7500 LASER PRINTER

Interface Specifications

RS232
Serial interface
Parallel interface
CAUTION:
EPL-7500
The
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
Parallel interface
Your printer is equipped with an 8-bit parallel interface.
Signal level: TTL compatible
Serial interface
The printer's resident serial interface can be set for either RS-232
RS-422
or operation. These interfaces have the following
characteristics.
Data format
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.
Baud rate
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.
Signal level
RS-232: Conforms to EIA
RS-422: Conforms to EIA
EPL-7500-4
is factory-set for the parallel
2
Handshaking
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
(SPACE), indicating that it is again ready
Connector
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).
The following tables list the default conditions that become valid
when the printer is initialized. The default conditions differ
according to the printer mode.
Default settings in HP emulation mode
CR=CR. LF=LF. FF=FF
Font ID
Character
code
1/7/91
XON code or sets the DTR flag to high
an
to receive data.
in SelecType Level 2 is executed.
CR=CR, LF=LF. FF=FF
I
Laser Printers