AFC-954-COM
来自ARM Wiki
COM1、COM2:
Pin RS232 RS422 RS485 1 DCD TX- DATA- 2 RXD TX+ DATA+ 3 TXD RX+ NC 4 DTR RX- NC 5 GND GND GND 6 DSR NC NC 7 RTS NC NC 8 CTS NC NC 9 RI NC NC
Pin | RS232 | RS422 | RS485 |
---|---|---|---|
1 | DCD | TX- | DATA- |
2 | RXD | TX+ | DATA+ |
3 | TXD | RX+ | NC |
4 | DTR | RX- | NC |
5 | GND | GND | GND |
6 | DSR | NC | NC |
7 | RTS | NC | NC |
8 | CTS | NC | NC |
9 | RI | NC | NC |