RS-232 Switching Code Table
| Serial port settings | Baud rate 115200bps, 8-bit data, 1-bit stop, check bit None |
| Port 1 | 0x30 0x30 0x30 0x0a 0x0d |
| Port 2 | 0x30 0x30 0x31 0x0a 0x0d |
| Port 3 | 0x30 0x30 0x32 0x0a 0x0d |
| Port 4 | 0x30 0x30 0x33 0x0a 0x0d |
| Port 5 | 0x30 0x30 0x34 0x0a 0x0d |
| Port 6 | 0x30 0x30 0x35 0x0a 0x0d |
| Port 7 | 0x30 0x30 0x36 0x0a 0x0d |
| Port 8 | 0x30 0x30 0x37 0x0a 0x0d |