NEC LCD4010-BK LCD4010 external control command - Page 29

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 70:Analog 3.3V abnormality 71:Analog 12V abnormality 72:Analog 5V abnormality 73:Audio amplifier +12V abnormality 74:Panel 5V abnormality 75:Digital 2.5V abnormality 76:A/D 3.3V abnormality 77:Digital 3.3V abnormality 80:Cooling fan-1 abnormality 81:Cooling fan-2 abnormality 90:Inverter abnormality 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 12. Serial No. & Model Name Read 12.1 Serial No. Read This command is used in order to read a serial No.. 1) The controller requests the monitor to read a serial No. Header Message SOH-'0'-Monitor ID-'0'-'A'-'0'-'6' STX-'C'-'2'-'1'-'6'-ETX Check code Delimiter BCC CR Header SOH (01h): Start Of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID which you want to get Serial Number. Ex.) If Monitor ID is '1', specify 'A'. '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'-'1'-'6' (43h, 32h, 31h, 36h): Serial No. 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 data for confirmation. Header SOH-'0'-'0'-Monitor ID-'B'-N-N Message STX-'C'-'3'-'1'-'6'Data(0)-Data(1)---Data(n)-ETX Check code Delimiter BCC CR (29/37)