10
8
D7
In
9
D8
In
10
ACK
Out
Answer pulse, low level signal
indicates that data have already been
received and the printer gets ready to
receive the next data.
11
BUSY
Out
HIGH level signal indicates that the
printer is BUSY and can not receive
data.
12
PE
Out
HIGH level signal indicates that paper
is end.
13
SEL
Out
Pulling up to HIGH level signal by a
resistor
17
FG
---
Signal Cover
18
Logic-H
---
Logic “1” level
32
nFault
Out
Low level means the printer is at fault
14,15,17
18,34,36
NC
---
No connection
16,19~30,
33
GND
---
Grounding logical 0 level
35
+5V
---
+5V power
Fig.2-5 36Pin assignment of parallel interface
Note: (1)“In” denotes input to the printer,“Out” denotes output from the printer.
(2)Signal level is TTL standard.
The timing chart for interface signal of parallel interface is as Fig.2-6shows:
