Command Block Format - Sony VPL-VW60 Protocol Manual

2-2. Command Block Format

The code from B0 to B7 as described below are transmitted.
Transmission from
the Master side
B0
B1
ITEM NUMBER
B2
SET / GET
B3
B4
DATA
B5
B6
B7
B0 START CORD
Common in the all FORMAT
B6 CHECK SUM
B1 to B5 are calculated by OR;
<Example of Calculation>
0xA9
0xA9
Answer
B7 END CODE
Common in the all FORMAT
2
START CODE : 0xA9
END CODE : 0x9A
1010 1001 0xA9
1010 1001 0x9A
1010 1001 Answer
0xA9
Reception in
the Master side
ACK / NAK
ACK
DUMMY DATA
CHECK SUM
1010
1001
1011
Reception in the Master side
(With Data)
ITEM NUMBER
REPLY
DATA
1001
1010
1011
0xBB
VPL-VW60