SW1 | SW2 | 波特率 | | SW3 | SW4 | 校验方式 |
OFF | OFF | 9600 | | OFF | OFF | 8位无校验 |
OFF | ON | 4800 | | OFF | ON | 7位偶校验 |
ON | OFF | 2400 | | ON | OFF | 7位奇校验 |
ON | ON | 1200 | | ON | ON | 7位偶校验 |