Epson Stylus Photo User Manual page 94

Specifications
Reverse channel
Serial interface
Initialization
Hardware
initialization
Software
initialization
Transmission mode: IEEE-1284 Nibble mode
Adaptable connector: 57-30360 Amphenol Connector or equivalent
Synchronization: Refer to the IEEE-1284 specification
Handshaking: Refer to the IEEE-1284 specification
Signal level: IEEE-1284 Level 1 device
Data transmission timing: Refer to the IEEE-1284 specification
The printer's built-in serial interface is based on the RS-423 standard.
This interface has the following characteristics:
Standard: Based on RS-423
Synchronization: Synchronous
Bit rate: Approx. 900 Kbps
Handshaking: X-ON/X-OFF DTR protocol
Word format:
Data bit: 8 bits
Parity bit: None
Start bit: 1 bit
Stop bit: 1 bit
Connector: 8-pin mini-circular connector
Recommended cable: Apple System Peripheral-8 cable (Part number
M0197)
The printer can be initialized (returned to a fixed set of conditions) in
these ways:
Hardware The printer is turned on.
initialization The printer receives an INIT signal from the parallel
interface.
Software Software sends the ESC @ (initialize the printer) command.
initialization
When the printer is turned on, the printer mechanism is initialized,
the input and print buffers are cleared, and all settings return to their
default values. However, the printer mechanism is not initialized if the
printer is turned on within 10 seconds after being turned off. In this
case, the printer caps the print head, and ejects any paper in the paper
path.
Software initialization clears the print buffer and returns all settings to
their default values. However, software initialization does not initialize
the printer mechanism or clear the data buffer.
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