At a Glance
The Date and Time type coded in 64 bit format contains the following information:
The year coded in a 16-bit field (4 most significant half-bytes)
the month coded in an 8-bit field (2 half bytes)
the day coded in an 8-bit field (2 half bytes)
the hour coded in an 8-bit field (2 half bytes)
the minutes coded in an 8-bit field (2 half bytes)
the seconds coded in an 8-bit field (2 half bytes)
Example: Representation in BCD format of the date and Time 2000-09-20:13:25:47.
Year (2000) |
Month (09) |
Day (20) |
Hour (13) |
Minute (25) |
Seconds (47) |
Least significant byte |
|
|---|---|---|---|---|---|---|---|
0010 0000 0000 0000 |
0000 1001 |
0010 0000 |
0001 0011 |
0010 0101 |
0100 0111 |
Unused |
|
Syntax Rules
The Date and Time type is entered as follows:
DT#<Year>-<Month>-<Day>-<Hour>:<Minutes>:<Seconds>
This table shows the lower/upper limits in each field.
Field |
Limits |
Comment |
|---|---|---|
Year |
[1990,2099] |
|
Month |
[01,12] |
The left 0 is always displayed, but can be omitted during entry |
Day |
[01,31] |
For the months 01\03\05\07\08\10\12 |
[01,30] |
For the months 04\06\09\11 |
|
[01,29] |
For the month 02 (leap years) |
|
[01,28] |
For the month 02 (non leap years) |
|
Hour |
[00,23] |
The left 0 is always displayed, but can be omitted during entry |
Minute |
[00,59] |
The left 0 is always displayed, but can be omitted during entry |
Second |
[00,59] |
The left 0 is always displayed, but can be omitted during entry |
Example:
Entry |
Comment |
|---|---|
DT#2000-1-10-0:40:0 |
The left 0 of the month\hour\second can be omitted |
dt#1999-12-31-23:59:59 |
The prefix can be written in lower case |
Dt#1990-10-2-12:02:30 |
The prefix can be mixed (lower\upper case) |