USB232GH2 | 高速光电隔离USBßàRS-232/485/422转换器 | 串口0-115.2Kbps | 无须供电 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
RS-232 | | RXD | TXD | | GND | | | | |
RS-485 | A | | | | GND | | | | B |
RS-422 | T+ | | | | GND | R+ | | R— | T— |