NEC LCD4620-2-IT LCD4020/4620/5220/6520, M40/M46 external control commands - Page 32

Delimiter CR (0Dh): End of packet 2) The monitor replies the result to the controller. Header Message SOH-'0'-'0'-Monitor ID-'B'-'0'-'A' STX-'C'-'3'-'1'-'D'-ST-EN-ETX Check code Delimiter 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". '0'-'A'(30h, 41h): Message length Message STX (02h): Start of Message 'C'-'3'-'1'-'D' (43h, 33h, 31h, 44h): Security Lock Control reply command ST-EN: Lock condition result data ST: Status '0'-'0'(30h, 30h): No error '0'-'1'(30h, 31h): Error EN: Enable /Disable (Current condition) '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 (32/40)