EMB-3700-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 |
COM2：
| 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 |
- 当COM2设置为RS485/RS422/ RS232时，其管脚定义分别如下
| RS485 | RS422 | RS232 | Pin | Pin | RS232 | RS422 | RS485 |
|---|---|---|---|---|---|---|---|
| DATA- | TX- | DCD | 1 | 2 | DSR | NC | NC |
| DATA+ | TX+ | RXD | 3 | 4 | RTS | NC | NC |
| NC | RX+ | TXD | 5 | 6 | CTS | NC | NC |
| NC | RX- | DTR | 7 | 8 | RI | NC | NC |
| GND | GND | GND | 9 | 10 | GND | GND | GND |
COM2 跳线功能设置(J1、J2、J3)
- (J1, J2,J3)跳线用来设置 COM2 的传输模式, COM2 支持 RS232/RS422/RS485 三种传输模式,您可以根据您自身的需求来选择设置,默认传输模式为 RS232。
- J1、J2、J3:
COM2 AS RS232 PORT COM2 AS RS422 PORT COM2 AS RS485 PORT 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
COM3_COM6：
| 信号名称 | Pin | Pin | 信号名称 |
|---|---|---|---|
| DCD3 | 1 | 2 | DSR3 |
| RXD3 | 3 | 4 | RTS3 |
| TXD3 | 5 | 6 | CTS3 |
| DTR3 | 7 | 8 | RI3 |
| GND | 9 | 10 | GND |
| DCD4 | 11 | 12 | DSR4 |
| RXD4 | 13 | 14 | RTS4 |
| TXD4 | 15 | 16 | CTS4 |
| DTR4 | 17 | 18 | RI4 |
| GND | 19 | 20 | GND |
| DCD5 | 21 | 22 | DSR5 |
| RXD5 | 23 | 24 | RTS5 |
| TXD5 | 25 | 26 | CTS5 |
| DTR5 | 27 | 28 | RI5 |
| GND | 29 | 30 | GND |
| DCD6 | 31 | 32 | DSR3 |
| RXD6 | 33 | 34 | RTS6 |
| TXD6 | 35 | 36 | CTS6 |
| DTR6 | 37 | 38 | RI6 |
| GND | 39 | 40 | GND |