1. com SETUP
2. CHECK=AA 55 Line=8 ( 8 line )
DataLH=LH
HEAD
L1(LSB) L1(MSB) L2 L3 L4
0xAA 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88
L5 L6 L7 L8 END
0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x55
DataLH=HL
HEAD
L1(MSB)
L1(LSB) L2 L3 L4
0xAA 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88
L5 L6 L7 L8 END
0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x55
Exp:
HEAD=0xAA,
L1-LSB=0x11, L1-MSB=0x22,then L1=0x2211=8721 (DataLH=LH)
or L1=0x1122=4386 (DataLH=HL).
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