A-79
Appendices
CP1E CPU Unit Software User’s Manual(W480)
A-2 Auxiliary Area Allocations by Address
App
A-2-2 Read/Write Words
A747
to
A749
(CP1E
N/NA-
type
CPU
Unit
only)
Power ON Clock Data
10
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)
See at left. Retained Retained Written when
power is
turned ON.
A751.11
DM Backup Restore
Failed Flag
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.
Retained Cleared
A751.14
DM Backup Save Flag 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.
Retained Cleared
A751.15
DM Backup Save
Start Bit
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.
ON: Start saving.
OFF: Execution nor-
mal or still in
progress.
Retained Cleared
Address
Name Function Settings
Status
after
mode
change
Status at
startup
Write
timing
Related
flags,
settings
Words Bits
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