BenQ PB6200 - Manual (Page 62)

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a. 1
st
Packet to Target (BenQ PB6XXX) structure like as below (Table 1)
Byte0 0xBE
Byte1 0xEF
Magic
Number
Byte2 0x01 Packet Type
Byte3 0x05 Packet size (Low)
Byte4 0x00 Packet size (High)
Byte5 0xD1 CRC (Low)
Packet
Header
Byte6 0xFA CRC (High)
Byte7 0x01 System Info Type
Byte8 0x02
Byte9 0x00
Version Number
Byte10 0x00 Object ID
Packet
Payload
Byte11 0x00 Level
Table 1
b. The Ack of Packet to Host (PC) (Table 2)
Ack Byte0 0x1E PAK
Byte1 0xBE
Byte2 0xEF
Magic
Number
Byte3 0x01 Packet Type
Byte4 0x05 Packet size (Low)
Byte5 0x00 Packet size (High)
Byte6 0xD1 CRC (Low)
Packet
Header
Byte7 0xFA CRC (High)
Byte8 0x01 System Info Type
Byte9 0x02
Byte10 0x00
Version Number
Byte11 0x00 Object ID
Packet
Payload
Byte12 0x00 Level
Table 2
PAK means that PC will follow the received Packet data
c. Packet same as 1
st
Packet (Table 1)
d. Same as Ack (Table 2)