User`s manual

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2) The monitor replies a result of the self-diagnosis.
Header Message Check code Delimiter
SOH-'0'-'0'-'A'-'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
'A' (41h): Monitor ID
This portion should depend on the monitor ID of Monitor.( ’A’(41h)-‘Z’(5Ah)).
'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
70:Analog 3.3V abnormality
71:Analog 12V abnorma
lity
72:Analog 5V abnormality
73:Audio amplifier +12V abnormality
78:Panel 12V abnormality
80:Cooling fan-1 abnormality
81:Cooling fan-2 abnormality
(3)
The byte data 70 is encoded as ASCII characters '7' and '0' (37h and 30h).
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