4.4.1 Loading Presets
(1) Command to load a preset
Load Preset XX:
55 aa 00 00 fe 00 00 00 00 00 01 00 00 01 51 13 01 00 XX SUM_L SUM_H
The command data is in hexadecimal format and XX stands for the preset number. The number
range is 0x00-0x09 which represent Preset 1-10. For the detailed preset numbers, see Appendix 6.
¡°SUM_L¡± and ¡°SUM_H¡± constitute the checksum of this command frame, which is the sum of the
underlined data and 0x5555. The calculation formula is as below.
SUM = 0x00 + 0x00 + 0xfe + 0x00 + 0x00 + 0x00 + 0x00 + 0x00 + 0x01 + 0x00 + 0x00 + 0x01
+ 0x51 + 0x13 + 0x01 + 0x00 + XX + 0x5555, SUM = SUM_H<<8 + SUM_L (SUM_L stands
for the lower 8 bits of SUM, while SUM_H stands for the higher 8 bits of SUM).
(2) Response packet
If the response packet is in the following format, the preset is successfully loaded.
aa 55 00 00 00 fe 00 00 00 00 01 00 00 01 51 13 00 00 b9 56
