A-4. Communication Protcol - Star SP200F Serie Bedienungsanleitung

Data transmission rate (baud rate)
Baud rate

A-4. Communication Protcol

Signals are controlled using the DTR line as BUSY flag.
When printing
PAPER OUT
If printer errors do not occur after the power is turned on, the DTR signal line
changes to "SPACE".
When the host computer confirms that the DTR signal line is set to "SPACE", the
host computer sends the data text via the RXD signal line to the printer. Also, the
printer will set the DTR signal line to "MARK" when the empty space in the data
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Switch 6
1200 OFF
2400 OFF
4800 ON
9600 ON
Data
RXD
DTR
Printing
Power on
when paper is out
RXD
DTR
signal
Power on
manuals search engine
Switch 7
OFF
ON
OFF
ON
Data
Buffer full Buffer empty
OFF LINE
Paper end
– 90 –
Data
ON LINE
Press the ONLINE button
after loading paper.