Appendix
146
The printer has a parallel interface for connecting to PC.
Shape of Connector
Signal lines and pin arrangement
*Signal used for bidirectional communication
Signal functions
Parallel Interface Connector
No.
I/O
Signal name
No.
I/O
Signal name
1
I
STB
19
-
GND
2
I/O
DATA0
20
-
GND
3
I/O
DATA1
21
-
GND
4
I/O
DATA2
22
-
GND
5
I/O
DATA3
23
-
GND
6
I/O
DATA4
24
-
GND
7
I/O
DATA5
25
-
GND
8
I/O
DATA6
26
-
GND
9
I/O
DATA7
27
-
GND
10
O
nACK
28
-
GND
11
O
BUSY
29
-
GND
12
O
PE
30
-
GND
13
I
SELECT
31
I
nNIT
14
O
nAUTOFD*
32
O
nFAULT
15
-
Not Used
33
-
Not Used
16
-
GND
34
-
Not Used
17
-
GND
35
-
Not Used
18
O
PLH
36
I
nSELIN*
Signal name
Function
STB
Signal for sending data to printer.
Steady-state value is High.
Printer reads data until this signal becomes from Low to High.
DATA0 to DATA7
Input signal for receiving 8-bit data.
Logic 1 is High.
DATA0 is LSB and DATA 7 is MSB.
