ATX-6895 COM
来自ARM Wiki
COM1:
Pin 信号名称 1 DCD 2 RXD 3 TXD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI
- COM1、COM2跳线功能设置:J1、J2、J3、J4、J5、J6
COM1 RS232(默认) COM1 RS422 COM1 RS485 J4 1-3 2-4 J4 3-5 4-6 J4 3-5 4-6 J5 1-3 2-4 J5 3-5 4-6 J5 3-5 4-6 J6 1-2 J6 3-4 J6 5-6 7-8
COM2 RS232(默认) COM2 RS422 COM2 RS485 J1 1-3 2-4 J1 3-5 4-6 J1 3-5 4-6 J2 1-3 2-4 J2 3-5 4-6 J2 3-5 4-6 J3 1-2 J3 3-4 J3 5-6 7-8
当COM1、COM2设置为RS232/RS422/RS485时,其管脚定义如下:
Pin RS232(默认) RS422 RS485 1 DCD TX- DATA- 2 DSR NC NC 3 RXD TX+ DATA+ 4 RTS NC NC 5 TXD RX+ NC 6 CTS NC NC 7 DTR RX- NC 8 RI NC NC 9 GND GND GND 10 GND GND GND
COM2-6:
信号名称 Pin Pin 信号名称 DCD 1 2 DSR SIN 3 4 RTS SOUT 5 6 CTS DTR 7 8 RI GND 9 10 GND