5.SERIAL INTERFACE
5.1Specifications
(1) Data transfer system | Asynchronous, half duplex |
(2)Baud rates
1200, 2400, 4800, 9600, 19200, 57600, 115200 bps (Selectable by command)
(3)Serial data configuration Start bit: 1 bit
Data bit: 8 bits Fixed
Parity bit: No parity
Stop bit: 1 bit
(4)Signal polarity
•Mark = logic “1”
•Space = logic “0” (+3V ~ +12V)
(5)Receiving data (RD signal)
•Mark = logic “1”
•Space = logic “0” (+3V ~ +12V)
(6)Transmission control (TD signal)
DC1 code (11H)
DC3 code (13H)
5.2. Connector Pin Configuration
Pin No. |
| Signal | Direction |
| Function |
| Pin No. of Cable | |||||||||||
3 |
|
| TXD | Output | Transferred data | No. 2 pin of | ||||||||||||
6 |
|
| +5V | — |
|
|
|
|
|
|
| No connection | ||||||
7 |
|
| RXD | Input | Received data | No. 3 pin of | ||||||||||||
11 |
|
| RTS | Input | Auto Turn On | No. 7 pin of | ||||||||||||
14 |
|
| — | — | Communication mode setting | No. 5 pin of | ||||||||||||
|
|
|
|
|
| (InfraRed or Serial) |
|
|
|
|
|
| ||||||
15 |
|
| GND | — | No. 5 pin of | |||||||||||||
|
|
|
|
|
|
|
|
| ||||||||||
Connector |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
Printer side: |
| Connector used on StarTac (Motorola) |
|
|
|
|
|
| ||||||||||
PC side |
| 9 pin |
|
|
|
|
|
| ||||||||||
Cable |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
— 66 —