17
2. Interface Specifications
2-1. I/O connection terminals
•
Connector plug 4234-0001LCSC (manufactured by 3M)
•
I/O connector signal layout
( Signal name
______________________
is Active Low)
Terminal
No.
Name
Direction
Description
Terminal
No.
Name
1
STROBE
_________________
Input
With the fall of the
command signal for reading
data, data is latched.
The pulse amplitude must
be 0.5
μ
s or higher.
2
Return GND
3
5
7
9
11
13
15
17
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
Input
Input
Input
Input
Input
Input
Input
Input
8-bit parallel data signal.
When the data is 1, "HIGH".
When 0, "LOW".
4
6
8
10
12
14
16
18
Return GND
Return GND
Return GND
Return GND
Return GND
Return GND
Return GND
Return GND
19
ACK
_________
Output
Data input end signal
20
NC
21
BUSY
Output
Signal indicating whether
or not data is acceptable
With the fall of the
STROBE signal, data is
accepted and then becomes
Active.
22
NC
23
PE
Output
Paper end signal
−
−
24
FEED
____________
Input
Paper feed signal
−
−
25
ERROR
_______________
Output
Error processing signal
−
−
26
RESET
_______________
Input
Initialize signal
−
−
27
Vcc
Input
+5Vdc circuit power supply
28
VP
29
31
GND
Input
Power supply GND
30
32
GND
33
VP
Input
+5Vdc printer power supply
34
VP
Note: Be sure to connect all the power-supply terminals (27 to 34.)