Chapter 5 Centronics Parallel Interface
Centronics Parallel Interface
Table 9. Centronics Interface Connector Pin Assignments
Input Signals |
| Output Signals |
| Miscellaneous |
| |
Signal | Pin | Signal | Pin | Signal | Pin | |
|
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| |
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|
| |
DATA LINE 1 | 2 | ACKNOWLEDGE | 10 | CHASSIS GROUND | 17 | |
Return | 20 | Return | 28 |
|
| |
DATA LINE 2 | 3 | ONLINE | 13 | GROUND | 30 | |
Return | 21 | Return | 28 |
|
| |
DATA LINE 3 | 4 | FAULT | 32 | Spares | 14 | |
Return | 22 | Return | 29 |
|
| |
DATA LINE 4 | 5 | PAPER EMPTY | 12 | No Connection | 34,35, | |
Return | 23 | Return | 28 |
| 36 | |
DATA LINE 5 | 6 | BUSY | 11 | +5 Volts | 18 | |
Return | 24 | Return | 29 |
|
| |
DATA LINE 6 | 7 |
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|
|
| |
Return | 25 |
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|
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DATA LINE 7 | 8 |
|
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| |
Return | 26 |
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DATA LINE 8 | 9 |
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Return | 27 |
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DATA STROBE | 1 |
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Return | 19 |
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PAPER INSTRUCTION | 15 |
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|
| |
Return | 29 |
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| |
PRIME | 31 |
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| |
Return | 30 |
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The length of the data cable from the host computer to the printer must not exceed 15 feet (5 meters).
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