AUO PS42A, User Manual

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48 | Controlling the Display Remotely
Example 3: Set Brightness as 76 for all monitors
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.
checksum = (0x38)^(0x05)^(0x67)^(0x4E)^(0x30)^(0x30)^(0x30)^(0x0D) = 0x29
checksum = (0x38)^(0x05)^(0x72)^(0x4E)^(0x30)^(0x36)^(0x37)^(0x0D) = 0x3D
Example 2: Get Model Name from ID-05, and the Model Name is ABC_123456
Send packet
Byte 0 1 2 3 4 5 6 7 8
Name Length Check
sum
ID Cmd
Type
Cmd
Code
Value End
Byte1 Byte2 Byte3
Hex 0x38 0x31 0x00 0x73 0x46 0x30 0x37 0x36 0x0D
Return packet
No return packet
Send Packet
Byte 0 1 2 3 4 5 6 7 8
Name Length Check
sum
ID Cmd
Type
Cmd
Code
Value End
Byte1 Byte2 Byte3
Hex 0x38 0x29 0x05 0x67 0x4E 0x30 0x30 0x30 0x0D
Return Packet
Byte 0 1 2 3 4 5 6 7 8
Name Length Check
sum
ID Cmd
Type
Cmd
Code
Value End
Byte1 Byte2 Byte3
Hex 0x38 0x3D 0x05 0x72 0x4E 0x30 0x36 0x37 0x0D
Send Packet
Byte 0 1 2 3 4 5 6 7 8 9 10
Name Length Check
sum
ID Cmd
Type
Cmd
Code
Value
Byte1 Byte2 Byte3 Byte4 Byte5 Byte6
Hex 0x44 0x08 0x05 0x67 0x20 0x03 0x00 0x00 0x00 0x00 0x00