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13.3 Auto Brightness Sensor Read
Read light sensor detected data from Monitor to Host PC.
1) Read Request from PC to Monitor.
Header Message Check code Delimiter
SOH-'0'-'A'-'0'-'A'-'0'-'6' STX-'C'-'2'-'2'-'3'–ETX BCC CR
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
'A' (41h): Monitor ID
If the command should be sent to certain monitor only, the either of character ‘A’(41h)
to ‘Z’(5Ah) which is corresponding to monitor ID from No1 to No.26 should be set to this
portion.
'0' (30h): Message sender is the controller
'A' (41h): Message type is "Command"
'0'-'6'(30h, 36h): Message length.
Message
STX (02h): Start of Message
'C' -'2' -'2' -'3' (43h,32h,32h,33h): Auto Brightness Sensor Read 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) Reply from Monitor to PC.
The monitor replies sensed data of light sensor as follows;
Note: If AutoBrightness=Off then retun Null Message.
Header Message Check code Delimiter
SOH-'0'-'0'-'A'-'B'-'1' -'4' STX-'C' -'3' -'2' -'3' -[RES] -
[
RES]
-[FVAL_HH] -[FVAL_HL] -[FVAL_LH] -
[
FVAL
_
LL]
-[BVAL_HH] -[BVAL_HL] -[BVAL_LH] -
[
BVAL
_
LL]
-[APL_HH] -[APL_HL] -[APL_LH] -[APL_LL] –ETX
BCC CR
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
'0' (30h): Message receiver is the controller
'A' (41h): Monitor ID
'B' (42h): Message type is "Command reply "
'1' -'4' (31h, 34h): Message length.
Message
STX (02h): Start of Message
'C'-'3'-'2' -'3' (41h, 33h, 32h,33h): Auto Brightness Sensor Read Reply Command
RES: Result code('0'(30h)-'0'(30h):Normal,
、 '0'(30h)-'1'(31h):Abnormal)
FVAL_HH:Front Sensor Detected Data(High High byte)( Maximum='F'(0x46))
FVAL_HL:Front Sensor Detected Data(High Low byte) ( Maximum='F'(0x46))
FVAL_LH:Front Sensor Detected Data(Low High byte) ( Maximum='F'(0x46))
FVAL_LL:Front Sensor Detected Data(Low Low byte) ( Maximum='F'(0x46))
BVAL_HH:Back Sensor Detected Data(High High byte) ( Maximum='F'(0x46))
BVAL_HL:Back Sensor Detected Data(High Low byte) ( Maximum='F'(0x46))
BVAL_LH:Back Sensor Detected Data(Low High byte) ( Maximum='F'(0x46))
BVAL_LL:Back Sensor Detected Data(Low Low byte) ( Maximum='F'(0x46))
APL_HH:APL data(High High byte) ( Maximum='F'(0x46))
APL_HL:APL data(High Low byte) ( Maximum='F'(0x46))
APL_LH:APL data(LowHigh byte) ( Maximum='F'(0x46))
APL_LL:APL data(Low Low byte) ( Maximum='F'(0x46))
ETX (03h): End of Message
Check code