AS-700, AS-710

Serial Interface
• Handshake
Handshaking is a signal exchange between the computer and the printer. It is
necessary, in order to prevent overflow or loss of data in the printer buffer.
The type of handshaking depends upon your computer system or terminal.
The PRINTER 700/710 supports three methods for the transmission of serial
data.
• Software handshaking
XON/XOFF (Transmission ON/Transmission OFF)
This is used by most terminals.
• Hardware handshaking
DTR
(Data Terminal Ready)
This is used by personal computers.
• Handshaking for both
• Baud rate
In order to be able to communicate with one another, the computer and the
printer must transmit or receive data, as the case may be, at the same clock
rate or baud rate. The PRINTER 700/710 can be set at 4 different rates (see
previous table).
• Data length
The computer and the printer must transmit and receive the same number of
data bits (pieces of information) per character. The IBM character and graphic
set requires 8 bits.
• Parity
Parity is an error detection technique that is used with the RS-232-C serial interface
during data transfer. Parity checks the parity (or the imparity) of binary
ones in a byte. It can also be switched off.
• Stopbit
The PRINTER 700/710 transmits two stop bits at the end of each character.
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