2. SERIAL INTERFACE
2-1. Interface Specifications
1 Data transmission method: | Asynchronous serial interface |
2 Baud rate: | Selectable from 150, 300, 600, 1200, |
| 2400, 4800, 9600, 19200 (Twin Head |
| only) bps (Refer to Installation |
| Manual.) |
3 Word length | Start bit: 1 bit |
| Data bit: 7 or 8 bits (selectable. Refer |
| to Installation Manual.) |
| Parity bit: Odd, even or none |
| (selectable. Refer to Installation |
| Manual.) |
| Stop bit: 1 or 2 bit length |
4 Signal polarity | |
| MARK : Logic |
| SPACE : Logic “0” (+3V to +25V) |
| Current loop (optional) |
| MARK : Logic “1”(current ON) |
| SPACE : Logic “0” (current OFF) |
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| MARK : Logic “1” |
| A is |
| SPACE : Logic “0” |
| A is 0.2V or more than B |
Mark [1]
Space [0]
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| b0 | b1 | b2 | b3 |
| b4 | b5 | b6 | (b7) |
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| D |
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A: Start bit
B: Data bits
C: Vertical parity bit
D: Stop bit
– 7 –
