Samlex America SA-1500 - Manual (Page 22)

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8. Appendix 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 ASCll code to implement the
asynchronous serial transmission control.
The byte structure is START BIP – 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.