Using The C82305 Or C82306 Serial Interface Card - Epson LQ-2080 User Manual

Using the C82305 or C82306 serial interface card

To use the C82305 or C82306 serial interface card, see the sections below
regarding the baud rate, handshake timing, and error handling.
For all other data transfer conventions, such as word structure and
communications protocol, see your interface card manual.
Selecting a baud rate
You can select from the following baud rates: 300, 600, 1200, 2400, 4800, 9600,
and 19200 bps (bits per second). To set the baud rate, see the bit-rate selection
table in your interface card manual.
Handshake timing
When the unused 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 unused area 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, the print data is replaced with an
asterisk ( ). The printer ignores all other errors, including framing and
overrun errors.
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