The C82305 /C82306 Serial Interface Card - Epson Stylus 1520 User Manual

The C82305 /C82306 serial interface card

To use the C82305 /C82306 interface card, see the sections below to set
the correct baud rate, handshake timing, and error handling.
For all other data transfer conventions, such as word structure and
communications protocol, see the C82305 /C82306 interface card
manual.
Selecting the baud rate
You can select from the following baud rates: 600, 1200, 2400, 4800, 9600,
and 19200 bps (bits per second). To set the baud rate, see the bit-rate
selection table in the C82305 /C82306 interface card manual.
Handshake timing
When the vacant area for data in the input buffer drops to 256 bytes, the
printer outputs an X-OFF code or sets the DTR flag to 1 (MARK) to
indicate that it cannot receive data. When the vacant area for data in the
buffer increases to 512 bytes, the printer outputs an X-ON code or sets the
DTR flag to 0 (SPACE) to indicate that it is ready to receive data.
Error handling
When the printer detects a parity error, it prints an asterisk ( ). The
printer ignores all other errors, including framing and overrun errors.
Using Optional Interfaces
B
B-5