There are 4 types of time and date value:
|
Time and Date Type |
Bits |
Purpose |
|---|---|---|
|
TIME |
Varies |
Use to store an amount of time that begins after an event takes place. For example, use TIME to store a timeout that occurs when plant is in a specific state. The time is stored as days, hours, minutes, seconds, and milliseconds. |
|
DATE |
Varies |
Use to store a calendar date. |
|
TIME_OF_DAY (or TOD). |
Varies |
Use to store a time (real time clock). TIME_OF_DAY is also be referred to as TOD. |
|
DATE_AND_TIME (or DT) |
Varies |
Use to store the date and time of day (real time clock) |
When you define a time and date value, you need to use a specific format (see Time and Date Formats).