Register description: 
(1) The channel vertical angle value is composed of 3 bytes, among which the 1
st
 byte is used to 
indicate positive/negative angle, the 2
nd
 and 3
rd
 bytes indicate angle value. The data storage adopts 
big-endian format; 
(2) The 1
st
 byte of the vertical angle value, 0x00 means a positive angle, 0x01 means a negative 
angle; 
(3) The angle resolution: LBS=0.01;   
(4) For example, the register value of channel 1: byte1=0x00, byte2=0x05(converted to decimal is 
5), byte3=0xd6(converted to decimal is 214), then the vertical angle of channel 1 is: (5*256+ 
214)*0.01=14.95°.