Appendix A
HP Compaq vc4815 系列串口定义用户指南
HP Compaq vc4815终端默认具有4个串口,分别为串口一、串口二,串口三、 串口四。
定 |
|
| 辅口2 |
| |
义 | 主口 | 辅口1 | 辅口3 | ||
(串口3) | |||||
| (串口1) | (串口2) | (串口4) | ||
| (TTL) | ||||
引脚 |
|
|
| ||
|
|
|
| ||
|
|
|
|
| |
1脚 | DCD/ +5V | +5V / DCD | +5V / DCD | +5V / DCD | |
|
|
|
|
| |
2脚 | RXD | RXD | RXD/TXD | RXD | |
|
|
|
|
| |
3脚 | TXD | TXD | TXD/RXD | TXD | |
|
|
|
|
| |
4脚 | DTR/ +12V | DTR/+5V /+12V | NC/DTR | DTR/+5V /+12V | |
|
|
|
|
| |
5脚 | GND | GND | GND | GND | |
|
|
|
|
| |
6脚 | DSR | DSR | NC/DSR | DSR | |
|
|
|
|
| |
7脚 | RTS/+12V | RTS/+12V | NC/RTS | RTS/+12V | |
|
|
|
|
| |
8脚 | CTS/RXD | CTS | RXD/TXD(TTL) | CTS | |
| (TTL) |
|
|
| |
9脚 | RI/TXD | RI | TXD/RXD(TTL) | RI | |
| (TTL) |
|
|
|