Diamondview DV55RM5, User Manual, Page: 41 / 60

41
External Control
RS232 control is not necessary for operation but is a convenient way to control displays from a computer at
a distance. Most functions that can be done with the remote, can also be done with RS232 commands.
RS232 Command Format
Commands sent from an automation/control system or PC to the display must have the following format:
STX (1byte) + IDT (1byte) + Type (1byte) + CMD (3bytes) + [Value/ Reply (1byte)] + ETX (1byte)
STX
：
Start byte = 07
IDT
：
Don’t care
Type
：
Read or Write command, 01 : read, 02 : write; 00 : return to host (from monitor)
CMD
：
as following tables
Value
：
Setting Value of “Write Command”
Reply
：
Return Value of monitor
ETX
：
End byte = 08
Transmit from PC (Host)
Read command
：
07 IDT 01 CMD 08 (7bytes)
Write/Setting command
：
07 IDT 02 CMD VAL 08 (8bytes)
Return from Monitor: Return CMD is the same with received CMD, the return command will be sent after action.
Serial Port Setting
Baud Rate Data Bit Parity Bit Stop Bit
115200 8 None 1
Baud rate can be set to 115200, 38400, 19200, or 9600 to match the monitor baud rate setting.
Baud rate 115200 is the default setting.
Explanation of symbols
▲: Valid command on Power saving/ off mode (The setting of "Power Saving Config" must not be “Eco”).