
7.SERIAL INTERFACE
7.1Specifications
(1) | Synchronous system | : Asynchronous | ||||
(2) | Baud rate |
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| : 1,200, 2,400, 4,800, 9,600, 19,200 bps (Selected by the user) | ||
(3) |
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| Start bits |
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| : 1 bit |
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| Data bits |
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| : 8 bits or 7 bits (Setting upon shipment) | ||
| Parity bits |
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| : Odd, even, or no parity (Selected by the user) | ||
| Stop bits |
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| : 1 bit or more | ||
(4) | Signal polarity |
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| • Mark | = | Logic "1" | |||
| • Space | = | Logic "0" (+3 ∼ +12 V) | |||
(5) | Received data (RXD signal) |
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| • Mark | = | 1 |
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| • Space | = | 0 |
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(6) | Reception control (DTR signal) |
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| • Mark | : | Data not transferable | |||
| • Space | : | Data transferable | |||
(7) | Transmission control (TXD signal) | |||||
| • DC1 code(11H) |
| : | Data receivable | ||
| • DC3 code(13H) | : | Data not receivable |
7.2Connector's Pin Configuration
No. | Signal Name | Input/Output | Function |
1 | FG |
| Frame Ground |
7 | GND |
| Signal Ground |
3 | RXD | Input | Received Data |
20 | DTR | Output | Printer BUSY Signal |
2 | TXD | Output | Transmitted Data |
6 | DSR | Input | Data Set Ready |
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[Note] 1. The
2.The received data should be always maintained in the Mark status when no data is being transferred.
Applicable connectors
Printer side | : | |
Cable side | : |
31 | CITIZEN |