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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
'0'-'0': Result code. No error
'C'-'0'-'0'-'E' (43h, 30h, 30, 45h): Asset Data write command
'0'-'0': Offset address from top of Asset data.
00h : Write data into from top of the Asset data area.
Data(0) –- Data(N): Asset data. The data must be ASCII characters strings.
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
9. Date & Time read and write
9.1 Date & Time Read
This command is used in order to read the setting of Date & Time.
1) The controller requests the monitor to reply with the Date & Time.
Header Message
Check
code
Delimiter
SOH-'0'-'A'-'0'-'A'-'0'-'6' STX-'C'-'2'-'1'-'1'-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): length.
Message
STX (02h): Start of Message
'C'-'2'-'1'-'1' (43h, 32h, 31h, 31h): Date & time read request 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 Date & Time to the controller.
Header Message
Check
code
Delimiter
SOH-'0'-'0'-'A'-'B'-'1'-'4' STX-'C'-'3'-'1'-'1'-YY-MM-DD-WW-HH-MM-DS-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"