NEC LCD3210-BK LCD3210 external control command - Page 20

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 SOH-'0'-'A'-'0'-'A'-'0'-'6' STX-'C'-'2'-'1'-'1'-ETX BCC Delimiter CR Header SOH (01h): Start Of Header '0' (30h): Reserved 'A' (41h): Monitor ID LCD3210 must be ASCII 'A' (41h). '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 SOH-'0'-'0'-'A'-'B'-'1'-'4' Message STX-'C'-'3'-'1'-'1'-YY-MM-DD-WW-HH-MM-DS-ETX Check code BCC Delimiter CR Header SOH (01h): Start of Header '0' (30h): Reserved '0' (30h): Message receiver is the controller 'A' (41h): Monitor ID LCD3210 must be ASCII 'A' (41h). 'B' (42h): Message type is "Command reply" '1'-'4'(31h, 34h): Message length Message STX (02h): Start of Message 'C'-'3'-'1'-'1' (43h, 33h, 31h, 31h): Date & Time read reply command 'YY'-'MM'-'DD'-'WW'-'HH'-'MN'-'DS': Date & Time data YY: Year (offset 2000) '0'-'0'(30h, 30h): 2000 | '6'-'3'(36h, 33h): 2099 (99 = 63h) MM: Month '0'-'1'(30h, 31h): January | '0'-'C'(30h, 43h): December DD: Day '0'-'1'(30h, 31h): 1 | '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh) (20/38)