| Pin
No. |
Function |
| 1 | Shield |
| 2 | REC (RXD) (RS232) |
| 3 | XMIT (TXD) (RS232) |
| 4 | Reserved (do not connect) |
| 5 | Common |
| 6 | TxD+ (RS485) |
| 7 | TxD- (RS485) |
| 8 | RxD+ (RS485) |
| 9 | RxD- (RS485) |
App Notes:
Serial Communication Protocol
Terminal Emulation Program sample program of how to create a terminal emulation program.
White Papers:
RS485 Diagram for half and full duplex
How to convert USB to RS232