AUO PS42A, Руководство пользователя

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46 | Controlling the Display Remotely
2. Control command protocol:
The command is structured by the command length code, Checksum, ID code, command type
code, function code, data code and end code . The length of the command is different for each
function.
A remote tool (terminal software), helps users send control commands more conveniently. When
developing terminal software, please send command packets within 50ms x (1) (known as
the "timeout period") and reserve enough delay time to execute next command. The detail delay
time is listed in the command table for reference.
If the computer does not send the command packet within the timeout period, a transmission error
will occur. If the display receives the command, it will send a return command to the computer.
The computer checks the return command to see whether or not the command it sent was
received, and must receive the return command before sending the next command.
Command Protocol
Command length code Total byte of message excluding CR (end code).
Checksum Calculate Checksum by XOR of all bytes.
ID code Identification for each of the displays.
Command type code 0x73: Set command; 0x67: Get command; 0x72: Reply
command;
0x2B: Valid command reply; 0x2D: Invalid command reply
Command code Each control function is assigned to a unique command
code.
Data code (value) Value of each control function
End code (CR) 0x0D