NEC LCD3215 - MultiSync - 32" LCD Flat Panel Display Control Manual page 13

Header
SOH-'0'-'A'-'0'-'E'-'0'-'A'
Header
SOH (01h): Start of Header
'0' (30h): Reserved
'A' (41h): Monitor ID
LCD3215/LCD4215 must be ASCII 'A' (41h).
'0' (30h): Message sender is the controller
'E' (45h): Message Type is "Set parameter command"
'0'-'A' (30h, 41h): Message length is 10 bytes
Message
STX (02h): Start of Message
'0'-'2' (30h, 32h): Operation code page number is 0
'7'-'8' (37h, 38h): Operation code is 78h (on page 2)
'0'-'0'-'0'-'1' (30h, 30h, 30h, 31h): Select the temperature sensor #1 (01h).
00h: No meaning
01h: Sensor #1
02h: Sensor #2
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
Step 2. The monitor replies 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
LCD3215/LCD4215 must be ASCII 'A' (41h).
'F' (46h): Message Type is "Set parameter reply"
'1'-'2' (30h, 32h): Message length is 18 bytes
Message
STX (02h): Start of Message
'0'-'0' (30h, 30h): Result code. No error
'0'-'2' (30h, 32h): Operation code page number is 0
'7'-'8' (37h, 38h): Operation code is 78h (in the page 2)
'0'-'0' (30h, 30h): This operation is "Set parameter" type
'0'-'0'-'0'-'2' (30h, 30h, 30h, 32h): Number of temperature sensors 2 (0002h).
'0'-'0'-'0'-'1' (30h, 30h, 30h, 31h): temperature sensor is #1.
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
Step 3. The controller requests the monitor to send the temperature from the selected sensor.
Header
SOH-'0'-'A'-'0'-'C'-'0'-'6'
Message
STX-'0'-'2'-'7'-'8'-'0'-'0'-'0'-'1'-ETX
Message
STX-'0'-'0'-'0'-'2'-'7'-'8'-'0'-'0'-'0'-'0'
-'0'-'2'-'0'-'0'-'0'-'1'-ETX
Message
STX-'0'-'2'-'7'-'9'-ETX
(13/37)
Check
code
BCC
Check
code
BCC
Check code Delimiter
BCC CR
Delimiter
CR
Delimiter
CR