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Address
Name
Words
Bits
A747
Power ON Clock Data
to
10
A749
(CP1E
N/NA-
type
CPU
Unit
only)
A751.11
DM Backup Restore
Failed Flag
A751.14
DM Backup Save Flag
A751.15
DM Backup Save
Start Bit
CP1E CPU Unit Software User's Manual(W480)
Function
These words contain the time at which
the power was turned ON ten times
before the startup time stored in words
A510 to A511.
A747.00 to A747.07: Seconds (00 to
59)
A747.08 to A747.15: Minutes (00 to
59)
A748.00 to A748.07: Hour (00 to 23)
A748.08 to A748.15: Day of month (01
to 31)
A749.00 to A749.07: Month (01 to 12)
A749.08 to A749.15: Year (00 to 99)
ON when DM backup data could not
be restored normally. If this flag turns
ON, data will not be restored from the
built-in EEPROM backup memory to
RAM.
ON when A751.15 is turned ON to
start the saving operation. This flag
stays ON while data is being saved
and turns OFF when finished.
Saving the specified words from the
DM Area in RAM to the built-in
EEPROM backup memory is started
when this bit is turned ON.
This bit will not turn OFF automatically
even when saving the data has been
completed.
If this bit is turned ON and OFF while
the DM Backup Save Flag (A751.14)
is ON, it will be ignored and the data
will not be backed up again.
Note Select the Restore D0- from
backup memory Check Box and
set the number of DM Area
words to back up in the Number
of CH of DM for backup Box in
the PLC Setup before using this
bit.
Status
after
Status at
Settings
mode
change
See at left.
Retained
Retained
Retained
Cleared
Retained
Cleared
ON: Start saving.
Retained
Cleared
OFF: Execution nor-
mal or still in
progress.
Appendices
Related
Write
flags,
startup
timing
settings
Written when
power is
turned ON.
A-79
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