NEC P403-AVT User Manual download pdf (Page 55)

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Delimiter

CR (0Dh): End of packet

2) The monitor replies a data for confirmation.

Header Message Check code

Delimiter

SOH-'0'-'0'-Monitor ID-

'B'-'1'-'6'

STX-'C'-'3'-'1'-'2'-ST-

YY-MM-DD-WW-HH-MN-DS-ETX

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

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NEC P403-AVT User Manual Page 55

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