RD-KT247 thermal printers
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10
~
24
GND
— —
Signal ground
12, 25
Matters need attention:
①
The mainframe and printer in the item ‘
signal source’ means
the source
of the signal sending out
②
The signal logic level is
EIA
level.
2.2.2 Parallel interface data transmission method
Using parallel interface to send data is relatively more trouble than using serial interface,
because using parallel interface to send data need the cooperation of the ‘STB’,‘BUSY’ AND
‘DATA’ data wires.
Sending step:
step1: using the appropriate data wire connects the printer to PC
step2:power on the printer and load the printing paper
step3:Begin to transmit data
,
and flow chart is as follows:
Initialization
:
BUSY=1
,
STB=1
BUSY=1
Sending 8 bits data
STB=0;
Delay Time
≥
N
Y