Signal | Return |
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pin | pin | Signal | Direction | Description | ||||||
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11 | 29 |
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| BUSY | OUT | A HIGH signal indicates the | ||||
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| printer cannot receive data. |
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| The signal goes HIGH in the |
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| following cases: |
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| 1) During data entry |
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| (for each character) |
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| 2) During initialization |
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| 3) During self test and |
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| 4) During a |
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12 | 30 |
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| PE | OUT | A HIGH signal indicates the | |||
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| printer is in a |
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| or in an error state |
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13 | - |
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| SLCT | OUT | Pulled up to +5 V through | ||||
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| 1 kΩ resistance |
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14 | - |
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| IN | When this signal is LOW, the | |
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| AUTO |
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| FEED |
| paper is automatically fed | ||||
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| XT |
| one line after printing | |||
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15 | - |
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| NC | - | Not used | |||
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16 | - |
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| GND | - | Logic ground level | ||||
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17 | - | CHASSIS | - | Printer’s chassis ground, | ||||||
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| GND |
| which is connected to the | ||||
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| logic ground |
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18 | - |
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| NC | - | Not used | |||
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- |
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| GND | - | ||||||
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| ground level |
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31 | 16 |
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| INIT | IN | When this signal goes LOW, | |||||
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| the printer controller is reset |
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| to its state when the power is |
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| first turned on and the print |
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| buffer is cleared. This level is |
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| normally HIGH; its pulse width |
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| must be more than 50 μs at |
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| the receiving terminal. |
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32 | - |
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| OUT | This signal level goes LOW | |||||
| ERROR |
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| when the printer: |
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| 1) Is out of paper |
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| 2) Is in an error state |
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| 3) Has no ink cartridges |
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| installed |
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