Mustek PP3000 - Manual (Page 44)

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TM
CHAP. 5
MAIN …
9 DATA 7 I
This signal provides the information of d7 the eighth
bit (MSB) of parallel data. The signal is at HIGH
level for a logical 1 and at a LOW level for a logical
0.
10 ACK O
A 9 microsecond LOW pulse to acknowledge receipt
of data.
11 BUSY O
When this signal goes LOW, the printer is ready to
accept data. When the printer is in one of the
conditions below, HIGH is set:
1. Data being entered
2. Off line
3. Error condition
12 PAPER END O
This signal is normally LOW. It will go HIGH if the
printer runs out of paper.
13 SELECTED O This signal is HIGH when the printer is on-line.
14 N/C
15 ERROR O
This signal is normally HIGH. This signal goes LOW
to signal that the printer cannot print due to an error
condition
16 N/C
17 SLCTIN I
When this signal goes LOW, the printer is selected to
work.
18 GND Ground
19 GND Ground
20 GND Ground
21 GND Ground
22 GND Ground
23 GND Ground
24 GND Ground
25 GND Ground