PX4 Parallel / Printer Interface
PX-4 is equipped with a Centronics-type parallel interface which
makes it possible to connect it to similarly equipped printers.
| Pin No. |
Symbol |
Direction |
Signal Name |
Centronics |
| 1 |
CG |
- |
Ground |
17 |
| 2 |
CG |
- |
Ground |
17 |
| 3 |
PD7 |
OUT |
Parallel Data |
9 |
| 4 |
BSY |
IN |
Printer Busy |
11 |
| 5 |
PD6 |
OUT |
Parallel Data |
8 |
| 6 |
+5 |
- |
+5V Power Supply |
|
| 7 |
PD5 |
OUT |
Parallel Data |
7 |
| 8 |
+5 |
- |
+5V Power Supply |
|
| 9 |
PD4 |
OUT |
Parallel Data |
6 |
| 10 |
GND |
- |
Signal Ground |
19 |
| 11 |
PD3 |
OUT |
Parallel Data |
5 |
| 12 |
!ERR |
IN |
Error Signal from Printer |
32 |
| 13 |
PD2 |
OUT |
Parallel Data |
4 |
| 14 |
GND |
- |
Signal Ground |
25 |
| 15 |
PD1 |
OUT |
Parallel Data |
3 |
| 16 |
!INIT |
OUT |
Reset Signal |
31 |
| 17 |
PD0 |
OUT |
Parallel Data |
2 |
| 18 |
GND |
- |
Signal Ground |
30 |
| 19 |
!STB |
OUT |
Strobe Signal |
1 |
| 20 |
- |
- |
- |
12 |
Notes: ! symbolizes inverted signal lines
Centronics column refers to pin wirings to connect to a standard centronics
32 pin connector.