Acer DV555K User Manual page 57

Example 3: Set Brightness as 76 for all monitors
Byte 0
Name Length Check
Hex 0x38
checksum = (0x38)^(0x00)^(0x73)^(0x46)^(0x30)^(0x37)^(0x36)^(0x0D) = 0x31
Get command
Command format: Length (1 byte) + ID (2 byte) + Cmd Type (1 byte) + Cmd Code(1 byte) +
Value(>=3 byte) + CR (1 byte)
Example 1: Get Brightness from ID-05 and this command is valid, and the Brightness value is 67.
Byte 0
Name Length Check
Hex 0x38
checksum = (0x38)^(0x05)^(0x67)^(0x4E)^(0x30)^(0x30)^(0x30)^(0x0D) = 0x29
Byte 0
Name Length Check
Hex 0x38
checksum = (0x38)^(0x05)^(0x72)^(0x4E)^(0x30)^(0x36)^(0x37)^(0x0D) = 0x3D
Example 2: Get Model Name from ID-05, and the Model Name is GA55_4KPID
Byte 0 1
Name Length Check
sum
Hex 0x44 0x08
Send packet
1 2
ID Cmd
sum Type
0x31 0x00 0x73
Return packet
No return packet
Send Packet
1 2
ID Cmd
sum Type
0x29 0x05 0x67
Return Packet
1 2
ID Cmd
sum Type
0x3D 0x05 0x72
Send Packet
2 3
ID Cmd Cmd
Type Code
0x05 0x67 0x20
3 4 5
Cmd
Code
Byte1
0x46 0x30
3 4 5
Cmd
Code
Byte1
0x4E 0x30
3 4 5
Cmd
Code
Byte1
0x4E 0x30
4 5 6
Byte1 Byte2
0x03 0x00
OSD (On-Screen-Display) Controls | 55
6 7
Value
Byte2 Byte3
0x37 0x36
6 7
Value
Byte2 Byte3
0x30 0x30
6 7
Value
Byte2 Byte3
0x36 0x37
7 8 9
Value
Byte3 Byte4 Byte5
0x00 0x00 0x00
8
End
0x0D
8
End
0x0D
8
End
0x0D
10
Byte6
0x00