Specifications

2-30 Hardware

Confidential

• Notes on using a host that can transmit data when the printer is BUSY:

If a

DLE EOT

DLE ENQ

, or

DLE DC 4

command is used while sending bit-image data,

and the receive buffer-full state is encountered during transmission of the data, the

DLE

EOT

DLE ENQ

DLE DC 4

is processed as bit-image data.

In addition, the data transmitted during the receive buffer-full state may be lost.

Example of use:

Set the receive buffer to 4KB, and check the status using

GS l

GS r

after each line of

printing is transmitted. Transmit one line of data at a time so that the receive buffer does not

become full.

RS-485 Serial Interface

(RS-485 serial interface specification is a dealer option.)

Specifications (RS-485-compatible)

NOTE:

The handshaking data, word length, baud rate, and parity depend on the DIP switches (see Chapter 1). Data

transmitted from the printer has 1 stop bit (fixed).

DR1 > DR2 CS1 > CS2 indicates that:

Channel 1 is high.

Channel 2 is low.

DR1 < DR2 CS1 < CS2 indicates that:

Data transmission: Serial

Synchronization: Asynchronous

Handshaking: Depends on the DIP switch settings (DTR/DSR or XON/

XOFF control)

Signal levels: 2.0 V to 5.0 V: Logic “1”

0.0 V to 0.8 V: Logic “0”

Baud rates: 2400, 4800, 9600, 19200 bps

Data word lengths: 7 or 8 bits

Parity settings: None, even, odd

Stop bits: 1 bit (fixed)

Connector (printer side): Female D-SUB-25 pin connector