SPRT SP-RMDIIID, Руководство пользователя

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19 /ACK output
Pulse reply,” low” level mean the date has
been received and printer already to receive
next date.
21 BUSY output
“high” level mean printer is “ busy” can not
receive data
23 /PE output
Via resistance drop down to “ low” level
mean have paper
25 SEL ---
Via resistance pull up to “ high” level mean
printer online
4 /ERR output
Via resistance pull up to “ high” level mean
no trouble
2, 6, 8 NC --- Not connected
10, 12, 14, 16,
18, 20, 22, 24
GND --- Ground connect, logic”0” level
DB-25 Parallel interface
Parallel interface each cords number define shown as below:
Cords No. Signal Direction Instruction
1 /STB input Gate trigger, rising along the read data.
2
3
4
5
6
7
8
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
Input
Input
Input
Input
Input
Input
Input
Those signals represent the message from
1 to 8, when the logic is “1” of each signal,it
is high level, logic show”0”mean low level.