Specifications

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6.2
RS-232C Serial Interface
6.2.1 Specification
1) Synchronization: Asynchronous
2) Baud rate
2400, 4800, 9600, 19200, 38400, 57600, 115200 bps (User selection)
3) Word configuration
Start bit: 1 bit
Data bit: 7 bits or 8 bits (User selection)
Parity bit: Odd, even, or no parity (User selection)
Stop bit: 1 bit or more
4) Signal polarity
RS-232C
・Mark ＝Logic ”1” (-3V to-12V)
・Space ＝Logic ”0” (+3V to +12V)
6.2.2 Description of Input/Output Signals
1) Input/Output Signals
(1) RD
Receive Data
When the host is connected, the unstable TD signal that can occur at the rise (fall) of
host power is defined as a break signal and the data is read and discarded.
(When the host power is turned off, the host may cause unstable state in TD. Printing
of such data shall be avoided.)
(2) TD
Transmit Data
(3) DSR
When DTR/DSR control is selected, data is transmitted after confirming that this signal
is a space.
When XON/XOFF control is selected, data is transmitted by ignoring DSR.
(4) DTR
Space sets the printer is in the Busy state and mark sets the printer in the Ready state.
Condition to become Busy can be switched by the setting (MSW1-3).