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| Unit 2: Technical Data |
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| I/O SIGNALS |
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PIN# |
| SIGNAL | I/O |
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| DESCRIPTION |
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1 |
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| FG | - |
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| Framework Ground |
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2 |
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| SD | Output |
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| Data transferred from Printer to Host |
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3 |
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| RD | Input |
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| Data transferred from Host to Printer |
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4 |
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| RS | Output |
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| Goes to the Low state when an error occurs in the printer |
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5 |
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| CS | Input |
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| Maintained at the High state |
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6 |
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| DR | Input |
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| Maintained at the High state |
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7 |
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| SG | - |
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| Signal Ground |
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20 |
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| ER | Output |
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| Goes to the High state when printer is ready to receive data |
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| Goes Low when printer is OFFLINE or errors have occurred in the printer | |||||||
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| LINE CONNECTION |
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1. DB25P |
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| 2. | DB9P |
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PRINTER |
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| PRINTER |
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FG | 1 |
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| 1 | FG |
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| FG | 1 |
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SD | 2 |
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| 3 | RD |
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| SD | 2 |
| 2 | RD | |
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RD | 3 |
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| 2 | SD |
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| RD | 3 |
| 3 | SD | |
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RS | 4 |
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| 5 | CS |
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| RS | 4 |
| 8 | CS | |
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CS | 5 |
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| 4 | RS |
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| CS | 5 |
| 7 | RS | |
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DR | 6 |
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| 20 | ER |
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| DR | 6 |
| 4 | ER | |
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SG | 7 |
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| 7 | SG |
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| SG | 7 |
| 5 | SG | |
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ER | 20 |
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| 6 | DR |
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| ER | 20 |
| 6 | DR | |
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3. DB25P |
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| 4. | DB9P |
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PRINTER |
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| PRINTER |
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FG | 1 |
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| 1 | FG |
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| FG | 1 |
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SD | 2 |
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| 3 | RD |
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| SD | 2 |
| 2 | RD | |
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RD | 3 |
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| 2 | SD |
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| RD | 3 |
| 3 | SD | |
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RS | 5 |
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| 20 | ER |
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| RS | 4 |
| 6 | DR | |
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CS | 4 |
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| 6 | DR |
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| CS | 5 |
| 4 | ER | |
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DR | 6 |
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| 4 | RS |
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| DR | 6 |
| 7 | RS | |
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SG | 7 |
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| 7 | SG |
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| SG | 7 |
| 5 | SG | |
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ER | 20 |
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| 5 | CS |
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| ER | 20 |
| 8 | CS | |
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Note: When executing Windows hardware control, 3. and 4. above work as the connection.
CT4i Series Operator Manual |