Technical Specifications (Input) |
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Interface: |
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Synchronization: | Asynchronous |
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Baud rate: |
| 300, 600, 1200, 2400, 4800, 9600, 19200 BPS | ||
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| (selectable) |
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Word length |
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Start bit:2 |
| 1 |
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Data bits: |
| 7 or 8 (selectable) |
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Parity bit: |
| Odd, even, none (selectable) | ||
Stop bits: |
| More than one bit |
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Signal polarity |
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Mark: |
| Logical 1 | ||
Space: |
| Logical 0 (+3V to +15V) | ||
Handshaking: | DTR, XON/XOFF |
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Connector Signals and Functions |
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Pin No. | Signal Name | Direction |
| Function |
1 | F - GND | — | Printer chassis ground | |
2 | TXD | OUT | Data from printer | |
3 | RXD | IN | Data to printer | |
4 | RTS | OUT | Always SPACE | |
5 | CTS | — | Not checked by printer | |
6 | NC |
| Not used |
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7 | S - GND | — | Signal ground |
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8 - 10 | NC |
| Not used |
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11 | RCH | OUT | Same signal as pin 20 | |
12 - 19 | NC |
| Not used |
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20 | DTR | OUT | SPACE when printer ready to receive | |
21 - 25 | NC |
| Not used |
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