Benq PB6100 Manuel D’Utilisation
63
e.
Packet to Target (BenQ PB6XXX) structure (Table 3)
Byte0 0xBE
Byte1 0xEF
Magic
Number
Byte2 0x01
Packet
Type
Byte3
0x05
Packet size (Low)
Byte4
0x00
Packet size (High)
Byte5 0xA9
CRC
(Low)
Packet
Header
Byte6 0xC6
CRC
(High)
Byte7 0x00 System
Info
Type
Byte8 0x00
Byte9 0x00
Version Number
Byte10 0x00
Object
ID
Packet
Payload
Byte11 0x00
Level
Table 3
B. Send Command
1. Introduction
Command packets consist of “Header” and “Payload”. The Packet Header is consistent for all packets. The Packet
Payload type and content varies based on the type of packet sent. The entire packet size is variable, being the sum of the
fixed-size Packet Header and variable-sized Packet Payload.
Packet Header (fixed size)
Packet Payload (variable size)
Figure 2 Packet Format
Packet Header Format
All Packets use the same Packet Header format illustrated
Figure 3
.
Byte 0
1 2 3 4 5 6
Magic Number
Type
Packet Payload Size
CRC
0xBE 0xEF type size_lo
size_hi
crc_lo
crc_hi
Figure 3 Packet Format