Epson 2070 - LQ B/W Dot-matrix Printer, User Manual

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The C823O5* and C82306* serial interface cards
To use the C82305* or C82306* serial interface card, see the
sections below for information on the correct 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, it prints an asterik (*).
The printer ignores all other errors, including framing and
overrun errors.
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Printer Options