NEC X981UHD External Control Codes - Page 56
ST: Date & Time Status command
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Delimiter CR (0Dh): End of packet 2) The monitor replies a data for confirmation. Header Message SOH-'0'-'0'-Monitor ID- STX-'C'-'3'-'1'-'2'-ST- 'B'-'1'-'6' YY-MM-DD-WW-HH-MN-DS-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". '1'-'6'(31h, 36h): Message length Message STX (02h): Start of Message 'C'-'3'-'1'-'2' (43h, 33h, 31h, 32h): Date & Time write reply command ST: Date & Time Status command '0'-'0'(30h, 30h): No error '0'-'1'(30h, 31h): Error '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) WW: weekdays '0'-'0'(30h, 30h): SUNDAY '0'-'1'(30h, 31h): MONDAY '0'-'2'(30h, 32h): TUESDAY '0'-'3'(30h, 33h): WEDNESDAY '0'-'4'(30h, 34h): THURSDAY '0'-'5'(30h, 35h): FRIDAY '0'-'6'(30h, 36h): SATURDAY HH: Hours '0'-'0'(30h, 30h): 0 | '1'-'7'(31h, 37h): 23 (=17h) MN: Minutes '0'-'0'(30h, 30h): 0 | '3'-'B' (33h, 42h): 59 (=3Bh) DS: Daylight saving (Summer time) '0'-'0'(30h, 30h): NO '0'-'1'(30h, 31h): YES ETX (03h): End of Message (56/130)