10
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.2-6 Signal Timing Chart of Parallel Interface
：
