NEC M40-2-AV Flat Panel Television User Manual


 
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'0'-'6'(30h, 36h): Program No.7
EN: Enable /Disable
'0'-'0'(30h, 30h): Disable
'0'-'1'(30h, 31h): Enable
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
11. Self diagnosis
11.1 Self-diagnosis status read
This command is used in order to read the Self-diagnosis status.
1) The controller requests the monitor to read Self-diagnosis status.
Header Message Check code Delimiter
SOH-'0'-Monitor ID-'0'-'A'-'0'-'4' STX-'B'-'1'-ETX BCC CR
Header
SOH (01h): Start of Header
'0' (30h): Reserved
Monitor ID: Specify the Monitor ID which you want to get status.
Ex.) If Monitor ID is '1', specify 'A'.
'0' (30h): Message sender is the controller.
'A' (41h): Message type is "Command".
'0'-'4'(30h, 34h): Message length
Message
STX (02h): Start of Message
'B'-'1' (42h, 31h): Self-diagnosis command
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
2) The monitor replies a result of the self-diagnosis.
Header Message Check code
Delimiter
SOH-'0'-'0'-Monitor ID-'B'-N-N STX-'A'-'1'-
ST(0)-ST(1) --------ST(n)-ETX
BCC CR
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
'0' (30h): Message receiver is the controller.
Monitor ID: Indicate a replying Monitor ID.
Ex.)
When this byte is set to 'A', the replying Monitor ID is '1'.
'B' (42h): Message type is "Command reply".
N-N: Message length
Note.) The maximum data length that can be written to the monitor at a time is 32bytes.
Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (34h and 30h).
Message
STX (02h): Start of Message
'A'-'1' (41h, 31h): Application Test Report reply command
ST: Result of self-tests
00: Normal