Cotek S1500-112, Руководство пользователя

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8. Appendices B
8-1. Operations of RS232 Serial Port
8-1-1. Hardware design:
This unit uses a 9-pin D connector and three of RS232 signal lines:
RECEIVE DATA (RXD): PIN2
TRANSMIT DATA (TXD): PIN3
DATA TERMINAL READY (DTR): PIN4
8-1-2. The connection between this unit and a computer is as follows:
Computer Power inverter
RXD RXD
TXD TXD
DSR DTR
RTS
CTS
GND GND
8-1-3. The RS232 interface of this unit employs ASCII code to
implement the asynchronous serial transmission control.
The byte structure is START BIT- 8 BIT DATA- STOP BIT
Baud rate: 1200, 2400, 4800 (SET BY DIP-SW).
Parity check: NONE, not settable
Data bit: 8, not settable.
Stop bit: 1, not settable.
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