NEC MultiSync LCD3210 LCD3210 LCD3210 Owner's Manual page 12

Step 4. The monitor replies with a message for confirmation.
Header
SOH-'0'-'0'- 'A' -'F'-'1'-'2'
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
'0' (30h): Message receiver is the controller
'A' (41h): Monitor ID
LCD3210 must be ASCII 'A' (41h).
'F' (46h): Message Type is "Set parameter reply"
'1'-'2' (31h, 32h): Message length is 18 bytes
Message
STX (02h): Start of Message
'0'-'0' (30h, 30h): Result code. No error
'0'-'0' (30h, 30h): Operation code page number is 0
'1'-'0' (31h, 30h): Operation code is 10h (in the page 0)
'0'-'0' (30h, 30h): This operation is "Set parameter" type
'0'-'0'-'6'-'4' (30h, 30h, 36h, 34h): Brightness max value is 100(0064h)
'0'-'0'-'5'-'0' (30h, 30h, 35h, 30h): Received a Brightness setting was 80(0050h) as 80%
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5 "Check code" for a BCC calculation.
Delimiter
CR (0Dh): End of packet
Repeat Step 1 and Step 2, if you need to check the Brightness setting. (Recommended)
Step 5. Request the monitor to store the Brightness setting. (Save Current Settings Command)
Header
SOH-'0'-'A'-'0'-'A'-'0'-'4'
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
'A' (41h): Monitor ID
LCD3210 must be ASCII 'A' (41h).
'0' (30h): Message sender is the controller
'A' (41h): Message type is "Command"
'0'-'4' (30h, 34h): Message length is 4 bytes
Message
STX (02h): Start of Message
'0'-'C' (30h, 43h): Command code is 0Ch as "Save current settings"
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5 "Check code" for a BCC calculation.
Delimiter
CR (0Dh): End of packet
Message
STX-'0'-'0'-'0'-'0'-'1'-'0'—'0'-'0'-'0'
-'0'-'6'-'4'-'0'-'0'-'5'-'0'-ETX
Message
STX-'0-'C'-ETX
(12/38)
Check code
Check code Delimiter
BCC CR
Delimiter
BCC CR