Omron CP1L-EL20DR-D, Operation Manual

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Clock Section 8-9
8-9 Clock
A clock is built into the CP1L-EL/EM CPU Unit and is backed up by a battery.
The current data is stored in the following words and refreshed each cycle.
Note The clock cannot be used if a battery is not installed or the battery voltage is
low.
Auxiliary Area Flags and Words
Name Addresses Function
Clock data:
A351 to A354 A351.00 to A351.07 Second: 00 to 59 (BCD)
A351.08 to A351.15 Minute: 00 to 59 (BCD)
A352.00 to A352.07 Hour: 00 to 23 (BCD)
A352.08 to A352.15 Day of the month: 00 to 31 (BCD)
A353.00 to A353.07 Month: 00 to 12 (BCD)
A353.08 to A353.15 Year: 00 to 99 (BCD)
A354.00 to A354.07 Day of the week:
00: Sunday, 01: Monday,
02: Tuesday, 03: Wednesday,
04: Thursday, 05: Friday, 06: Saturday
Name Addresses Contents
Start-up Time A510 and
A511 The time at which the power was
turned ON (year, month, day of month,
hour, minutes, and seconds).
Power Interruption Time A512 and
A513 The time at which the power was last
interrupted (year, month, day of month,
hour, minutes, and seconds).
Power ON Clock Data 1 A720 to A722 Consecutive times at which the power
was turned ON (year, month, day of
month, hour, minutes, and seconds).
The times are progressively older from
number 1 to number 10.
Power ON Clock Data 2 A723 to A725
Power ON Clock Data 3 A726 to A728
Power ON Clock Data 4 A729 to A731
Power ON Clock Data 5 A732 to A734
Power ON Clock Data 6 A735 to A737
Power ON Clock Data 7 A738 to A740
Power ON Clock Data 8 A741 to A743
Power ON Clock Data 9 A744 to A746
Power ON Clock Data 10 A747 to A749
Operation Start Time A515 to A517 The time that operation started (year,
month, day of month, hour, minutes,
and seconds).
Operation End Time A518 to A520 The time that operation stopped (year,
month, day of month, hour, minutes,
and seconds).
User Program Date A90 to A93 The time when the user program was
last overwritten (year, month, day of
month, hour, minutes, and seconds).
Parameter Date A94 to A97 The time when the parameters were
last overwritten (year, month, day of
month, hour, minutes, and seconds).