Using the C823051 or C823061 Serial Interface Board
To use the C823051 or C823061 interface board, see the sections
below for information on selecting the baud rate, handshake
timing, and error handling. For all other data transfer
conventions, such as word structure and communications
protocol, see your interface board 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 your interface board 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.
A-2
Using Optional Interfaces
