Times Stored In Memory; Power On Clock Data - Omron CJ2 CPU - REV 10-2010 User Manual

10 CPU Unit Functions

10-1-2 Times Stored in Memory

Words in the Auxiliary Area automatically store the times when the power is turned ON, the times when
the power is turned OFF, the number of power interruptions, the total power ON time, the times when
the user memory (programs and parameters) is written, and the times when operation is started and
stopped. The times stored in memory must not be used if the battery is not connected or if the battery
voltage is low.

Power ON Clock Data

The year, month, day, and time that the PLC is turned ON is stored in the following Auxiliary Area
words.
Name
Power ON Clock
Data 1
Power ON Clock
Data 2
Power ON Clock
Data 3
Power ON Clock
Data 4
Power ON Clock
Data 5
Power ON Clock
Data 6
Power ON Clock
Data 7
Power ON Clock
Data 8
Power ON Clock
Data 9
Power ON Clock
Data 10
10-4
Address
A720 to The data is BCD.
A722
A720.00 to A720.07: Seconds (00 to 59)
A720.08 to A720.15: Minutes (00 to 59)
A721.00 to A721.07: Hour (00 to 23)
A721.08 to A721.15: Day of month (01 to 31)
A722.00 to A722.07: Month (01 to 12)
A722.08 to A722.15: Year (00 to 99)
A723 to These words contain the startup time/date for the second-to-last time that power
A725 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A726 to These words contain the startup time/date for the third-to-last time that power
A728 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A729 to These words contain the startup time/date for the fourth-to-last time that power
A731 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A732 to These words contain the startup time/date for the fifth-to-last time that power
A734 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A735 to These words contain the startup time/date for the sixth-to-last time that power
A737 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A738 to These words contain the startup time/date for the seventh-to-last time that power
A740 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A741 to These words contain the startup time/date for the eighth-to-last time that power
A743 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A744 to These words contain the startup time/date for the ninth-to-last time that power
A746 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
A747 to These words contain the startup time/date for the tenth-to-last time that power
A749 was turned ON. The data is BCD and the storage format is the same as words
A720 to A722.
Description
CJ2 CPU Unit Software User's Manual